McqMate
| 301. |
The causative organism of dengue fever is |
| A. | Fungus |
| B. | Bacteria |
| C. | Protozoa |
| D. | Virus |
| Answer» D. Virus | |
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Explanation: Dengue fever also known as breakbone fever, is an infectious tropical disease caused by the dengue virus. Symptoms include fever, headache, muscle and joint pains, and a characteristic skin rash that is similar to measles. In a small proportion of cases the disease develops into the life-threatening dengue hemorrhagic fever, resulting in. bleeding, low levels of blood platelets and blood plasma leakage, or into dengue shock syndrome, where dangerously low blood pressure occurs. Dengue is transmitted by several species of mosquito within the genus Aedes, principally A, aegypti. |
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| 302. |
Which of the following is considered to be the best cholesterol? |
| A. | VLDL |
| B. | LDL |
| C. | HDL |
| D. | Triglycerids |
| Answer» C. HDL | |
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Explanation: High-density lipoprotein (HDL) is one of the five major groups of lipoproteins, which, in order of sizes, largest to smallest, are chylomicrons, VLDL, IDL, LDL, and HDL, which enable lipids like cholesterol and triglycerides to be transported within the water based bloodstream. In healthy individuals, about thirty percent of blood cholesterol is carried by HDL. About one to one-third of blood cholesterol is carried by high-density lipoprotein (HDL). HDL cholesterol is known as "good" cholesterol, because high levels of FIDL seem to protect against heart attack. Low levels of HDL (less than 40 mg/dL) also increase the risk of heart disease. |
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| 303. |
Bleeding of gums and loosening of teeth is caused due to deficiency of- |
| A. | VitaminA |
| B. | Vitamin B |
| C. | Vitamin C |
| D. | Vitamin D |
| Answer» C. Vitamin C | |
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Explanation: Scurvy s a disease caused by the deficiency of vitamin C or ascorbic acid. The symptoms are bleeding gums, loosening of teeth, swollen and painful joints, bleeding in tissues and general fatigue (tiredness). Vitamin C is destroyed on heating. |
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| 304. |
During photosynthesis in plants, the gas evolved is - |
| A. | Carbon dioxide |
| B. | Nitrogen |
| C. | Oxygen |
| D. | Hydrogen |
| Answer» C. Oxygen | |
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Explanation: Photosynthesis is a process used by plants and other organisms to convert the light energy captured from the sun into chemical energy that can be used to fuel the organism's activities. Photosynthesis occurs in plants, algae, and many species of bacteria, but not in archaea. Photosynthesis is vital for all aerobic life on Earth. In addition to maintaining normal levels of oxygen in the atmosphere, photosynthesis is the source of energy for nearly all life on earth,either directly, through primary production, or indirectly, as the ultimate source of the energy in their food. |
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| 305. |
The science dealing with the study of teeth is - |
| A. | Odontology |
| B. | Ornithology |
| C. | Phenology |
| D. | Cosmology |
| Answer» A. Odontology | |
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Explanation: Odontology is the study of the structure, development, and abnormalities of the teeth. Forensic dentistiy or forensic odontology is the proper handling, examination and evaluation of dental evidence, which will be then presented in the interest of justice. The evidence that may be derived from teeth, is the age (in children) and identification of the person to whom the teeth belong. This is done using dental records including radiographs, ante-mortem (prior to death) and post-mortem photographs and DNA. |
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| 306. |
The enzyme in whose presence glucose and fructose are converted into alcohol is - |
| A. | Diastase |
| B. | Maltase |
| C. | Invertase |
| D. | Zymase |
| Answer» D. Zymase | |
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Explanation: The slow decomposition of organic matter into simpler substances in presence of enzymes is known as fermentation. Fermentation is used for the preparation of alcoholic beverages from grape juice and other fruit juices in presence of yeast, which contains proper enzymes. In the first process, sugar from molasses or sugarcane, fruits or starch is first converted to glucose and fructose (isonomers) in presence of an enzyme called invertase. |
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| 307. |
Which one of the following is the tallest bird’? |
| A. | Peacock |
| B. | Penguin |
| C. | Ostrich |
| D. | Emu |
| Answer» C. Ostrich | |
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Explanation: The largest living bird is the ostrich (Struthio camelus), from the plains ofAfrica and Arabia. A large male ostrich can reach a height of 2.8 m (9.2 ft), weighing over 156 kg (345 lb). |
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| 308. |
Anaemia occurs due to the deficiency of |
| A. | riboflavin |
| B. | thiamine |
| C. | folic acid |
| D. | niacin |
| Answer» C. folic acid | |
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Explanation: Anemia is a decrease in number of red blood cells (RBCs) or less than the normal quantity of hemoglobin in the blood. However, it can include decreased oxygen-binding ability of each hemoglobin molecule due to deformity or lack in numerical development as in some other types of hemoglobin deficiency. Because hemoglobin (found inside RBCs) normally carries oxygen from the lungs to the capillaries, anemia leads to hypcoda (lack of oxygen) in organs. |
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| 309. |
Which of the following diseases usually spreads through air? |
| A. | Plague |
| B. | 'Typhoid |
| C. | Tuberculosis |
| D. | Cholera |
| Answer» C. Tuberculosis | |
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Explanation: Airborne diseases refers to any diseases which are caused by pathogens and transmitted through the air. These viruses and bacteria can be spread through coughing, sneezing, laughing or through close personal contact. These pathogens ride on either dust particles or small respiratory droplets and can stay suspended in air and or are capable of traveling distances on air currents. Many common infections can spread by airborne transmission at least in some cases, including:Anthrax (inhalational), Chickenpox, Influenza, Measles, Smallpox and Tuberculosis. |
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| 310. |
Cereals are a rich source of - |
| A. | Starch |
| B. | Glucose |
| C. | Fructose |
| D. | Maltose |
| Answer» A. Starch | |
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Explanation: Starch or amylum is a carbohydrate consisting of a large number of glucose units joined by glycosidic bonds. This polysaccharide is produced by all green plants as an energy store. It is the most common carbohydrate in the human diet and is contained in large amounts in such staple foods as potatoes, wheat, maize (corn), rice, and cassava. Pure starch is a white, tasteless and odourless powder that is insoluble in cold water or alcohol. It consists of two types of molecules: the linear and helical amylose and the branched amylopectin. |
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| 311. |
The vitamin most readily destroyed by heat is – |
| A. | Riboflavin |
| B. | Ascorbic acid |
| C. | Tocopherol |
| D. | Thiamine |
| Answer» B. Ascorbic acid | |
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Explanation: Vitamin C (Ascorbic Acid) is the most easily destroyed vitamin. It is destroyed by oxygen, heat (above 70 degrees) and it leaks out into the cooking water because it is a water soluble vitamin. To preserve vitamin C in food, citrus fntits, tomatoes, juices, broccoli, green peppers, cantaloupe and strawberries should be stored in the refrigerator uncut until we need them. Steaming and stir-frying are two methods that help conserve vitamin C content. |
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| 312. |
The process of producing energy in plants is known as – |
| A. | Absorption |
| B. | Reduction |
| C. | Photosynthesis |
| D. | Transpiration |
| Answer» C. Photosynthesis | |
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Explanation: Photosynthesis is the process by which plants, some bacteria and some protistans use the energy from sunlight to produce glucose from carbon dioxide and water. |
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| 313. |
Which part of the brain is responsible for triggering actions like thinking, intelligence, memory and ability to learn? |
| A. | Diencephalon |
| B. | Hypothalamus |
| C. | Cerebrum |
| D. | Control |
| Answer» C. Cerebrum | |
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Explanation: The cerebrum or cortex is the largest part of the human brain, associated with higher brain function such as thought and action. |
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| 314. |
The poison of honey bee is : |
| A. | Acidic |
| B. | Alkaline |
| C. | Saltish |
| D. | Protein |
| Answer» A. Acidic | |
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Explanation: A bee sting is strictly a sting from a bee (honey bee, bumblebee, sweat bee, etc.). In the vernacular it can mean a sting of a bee, wasp, hornet, or yellow jacket. Bee venom is acidic as it contains the highly acidic peptide melittin, and these interventions are often recommended to neutralize the venom; however, neutralizing a sting is unlikely to be effective as the venom is injected under the skin and deep into the tissues, where a topically applied alkali is unable to reach, so neutralization is unlikely to occur. |
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| 315. |
Birds which swim in water have - |
| A. | webbed feet |
| B. | broad wings |
| C. | long beaks |
| D. | toes with claws |
| Answer» A. webbed feet | |
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Explanation: Almost all the swimming birds have webbed feet which propel them when they are fishing or pursuing a prey into the water. The short legs are situated far towards the lower belly, in order to make easier the swimming action. Flamingos are the exception, gathering both the long legs of the shorebirds and the webbed feet of the ducks. It can feed in deep water and walk easily. Except the Laridae which are more similar to other birds and are able to swim and to walk, all the web-footed birds are very clumsy when they move on the ground. Finally, humans use similar tools when they add flippers to swim faster! |
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| 316. |
Liver-oil of fish is rich in - |
| A. | Vitamin A |
| B. | Vitamin C |
| C. | Vitamin D |
| D. | Vitamin E |
| Answer» A. Vitamin A | |
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Explanation: Fish liver oils are rich in Vitamin A. These oils, especially Cod Liver Oil, are also rich in omega-3 fatty acids and Vitamin D. |
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| 317. |
Which of the following does not provide any energy? |
| A. | Fats |
| B. | Proteins |
| C. | Vitamins |
| D. | Carbohydrates |
| Answer» C. Vitamins | |
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Explanation: Vitamins are organic micronutrients which do not yield energy, but rather help our bodies carry out necessary and important physiological processes. They are either water-soluble (water is required for absorption and are excreted in urine) or fat- soluble (requires fat for absorption and are stored in fat tissue). |
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| 318. |
Dialysis is used to perform the function of — |
| A. | Lungs |
| B. | Heart |
| C. | Liver |
| D. | Kidneys |
| Answer» D. Kidneys | |
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Explanation: Dialysis is the artificial process of getting rid of waste (diffusion) and unwanted water (ultra-filtration) from the blood. This process is naturally done by our kidneys. It is the artificial replacement for lost kidney function. |
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| 319. |
Presticides are used to destroy – |
| A. | micro-organisms |
| B. | poisonous substances in soil |
| C. | poisonous plants |
| D. | insects |
| Answer» D. insects | |
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Explanation: A pesticide is generally a chemical or biological agent (such as a virus, bacterium, antimicrobial or disinfectant) that through its effect deters, incapacitates, kills or otherwise discourages pests. Target pests can include insects, plant pathogens, weeds, mollusks, birds, mammals, fish, nematodes (roundworms), and microbes. |
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| 320. |
The tallest and thickest type of grass is |
| A. | Alfalfa |
| B. | Fodder |
| C. | Bamboo |
| D. | Lichens |
| Answer» C. Bamboo | |
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Explanation: The bamboo actually belongs to the grass family and is actually the tallest grass of all. There are kinds of bamboo which are said to grow as tall as 100 feet in height. The thickest bamboo can be O.2m - 0.3m (8- 2") thick. Bamboo is a perennial grass with woody stems that are divided into sections by joints called nodes. One of the fastest-growing plants on the planet, bamboo comes in over 1,000 varieties. Plants classified as giant bamboo are the thickest and tallest of the species. |
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| 321. |
The process of preventing the birds from flying is called – |
| A. | brailing |
| B. | debeaking |
| C. | dubbing |
| D. | pecking |
| Answer» A. brailing | |
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Explanation: Brailing is the practice of preventing a bird from flying by tying the wing so that it is impossible for the bird to open it fully. The brail is a clear plastic strap, fastened by rivets, which will be used to restrain his wing. Brailing the birds helps prevent injuries during shipment. |
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| 322. |
Largest gland in human body is . |
| A. | Liver |
| B. | Pancreas |
| C. | Pituitary |
| D. | Thyroid |
| Answer» A. Liver | |
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Explanation: The largest gland in the human also happens to be the biggest internal organ: the liver. |
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| 323. |
Saliva helps in the digestion of - |
| A. | Fats |
| B. | Starch |
| C. | Proteins |
| D. | Vitamins |
| Answer» B. Starch | |
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Explanation: Produced in salivary glands, saliva is 98% water, but it contains many important substances, including electrolytes, mucus, antibacterial compounds and various enzymes. The digestive functions of saliva include moistening food, and helping to create a food bolus, so it can be swallowed easily. Saliva contains the enzyme amylase that breaks some starches down into maltose and dextrin. Thus, digestion of food occurs within the mouth, even before food reaches the stomach. |
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| 324. |
Which one of the following is not a vaccine? |
| A. | 13CG |
| B. | Anti-rabies |
| C. | Polio vaccine |
| D. | Progesterone |
| Answer» D. Progesterone | |
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Explanation: Progesterone is one of the hormones in our bodies that stimulates and regulates various functions. Progesterone plays a role in maintaining pregnancy. The hormone is produced in the ovaries, the placenta (when a woman gets pregnant) and the adrenal glands. It helps prepare your body for conception and pregnancy and regulates the monthly menstrual cycle. It also plays a role in sexual desire. |
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| 325. |
The disease that is caused by virus is - |
| A. | Typhoid |
| B. | Cholera |
| C. | Common Cold |
| D. | Tetanus |
| Answer» C. Common Cold | |
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Explanation: Common cold is a viral infectious disease of the upper respiratory tract which affects primarily the nose. Symptoms include coughing, sore throat, runny nose, and fever which usually resolve in seven to ten days, with some symptoms lasting up to three weeks. Well over 200 viruses are implicated in the cause of the common cold; the rhinoviruses are the most common. It is the most frequent infectious disease in humans with the average adult contracting two to three colds a year and the average child contracting between-six and twelve. |
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| 326. |
Small Pox is caused by - |
| A. | Rubeola Virus |
| B. | Variola Virus |
| C. | Varicella |
| D. | Myxovirus |
| Answer» B. Variola Virus | |
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Explanation: Smallpox was an infectious disease unique to humans, caused by either of two virus variants, Variola major and Variola minor. The disease is also known by the Latin names Variola or Variola vera, which is a derivative of the Latin varies, meaning "spotted", or \Tanis, meaning "pimple". After vaccination campaigns throughout the 19th and20th centuries, the WHO certified the eradication of smallpox in 1979. Smallpox is one of two infectious diseases to have been eradicated, the other being rinderpest, which was declared, eradicated in 2011. |
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| 327. |
Respiration process requires – |
| A. | heat |
| B. | water |
| C. | oxygen |
| D. | sunlight |
| Answer» C. oxygen | |
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Explanation: In physiology, respiration (often confused with breathing) is defined as the transport of oxygen from the outside air to the cells within tissues, and the transport of carbon dioxide in the opposite direction. This is in contrast to the biochemical definition of respiration, which refers to cellular respiration: the metabolic process by which an organism obtains energy by reacting oxygen with glucose to give water, carbon dioxide and ATP (energy). Respiratory behavior is correlated to the cardiovascular behavior to control the gaseous exchange between cells and blood. |
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| 328. |
AIDS is a/an - |
| A. | bacterial disease |
| B. | viral disease |
| C. | fungal disease |
| D. | algal disease |
| Answer» B. viral disease | |
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Explanation: AIDS (Acquired immune deficiency syndrome or acquired immunodeficiency syndrome) is a disease caused by a virus called HIV (Human Immunodeficiency Virus). The illness alters the immune system, making people much more vulnerable to infections and diseases. This susceptibility worsens as the disease progresses. HIV is found in the body fluids of an infected person (semen and vaginal fluids, blood and breast milk). |
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| 329. |
Amoebic dysentery is caused by - |
| A. | Entameeba histolytica |
| B. | Salmonella typhi |
| C. | E. coil |
| D. | Streptococcus pyogenes |
| Answer» A. Entameeba histolytica | |
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Explanation: Amoebic dysentery (or amebic dysentery) is a type of dysentery caused primarily by the amoeba Entamoeba histolytica. Amoebic dysentery is transmitted through contaminated food and water. Amoebae spread by forming infective cysts which can be found in stools, and spread if whoever touches them does not sanitize their hands. There are also free amoebae, or trophozoites, that do not form cysts, however trophozoites do not survive long outside of the human gastrointestinal tract, and are a purely diagnostic observation. |
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| 330. |
If the blood group of one parent is AB and that of the other 0, the possible blood group of their child would be - |
| A. | A or B |
| B. | A or B or O |
| C. | A or AB or O |
| D. | A or B or AB or O |
| Answer» A. A or B | |
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Explanation: Everyone has two copies of the gene for blood type (and for most other genes as well). Since O is a recessive trait that means that someone with type O blood must have two copies of the O gene. Types A and B are dominant, and since they're co-dominant, someone with type AB blood must have the A gene and the B gene. In reproduction, the offspring get one copy of each gene from each parent. Since the type O parent has two copies of the O gene, it's assured that the offspring will get one of them. |
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| 331. |
How many bones are there in the human body? |
| A. | 187 |
| B. | 287 |
| C. | 206 |
| D. | 306 |
| Answer» C. 206 | |
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Explanation: There are 206 bones in an normal adult skeleton. A typical adult human skeleton consists of 206 bones. Individuals may have more or fewer bones than this owing to anatomical variations. These include: 22 Cranial and Facial Bones; 6 Ear Bones; 1 Throat Bone; 4 Shoulder Bones; 25 Chest Bones; 26 Vertebral Bones; 6 Arm and Forearm bones; 54 Hand Bones; 2 Pelvic Bones; 8 Leg Bones; and 52 Foot Bones. |
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| 332. |
Which one of the following animals is called farmer's friend - |
| A. | Ant |
| B. | Earthworm |
| C. | Bee |
| D. | Butterfly |
| Answer» B. Earthworm | |
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Explanation: Earthworms travel underground by the means of waves of muscular contractions which alternately shorten and lengthen the body. The shortened part is anchored to the surrounding soil by tiny claw-like bristles (setae) set along its segmented length. In all the body segments except the first, last and clitellum, there is a ring of S-shaped setae embedded in the epidermal pit of each segment (perichaetine). The whole burrowing process is aided by the secretion of lubricating mucus. Worms can make gurgling noises underground when disturbed as a result of the worm moving through its lubricated tunnels. They also work as biological "pistons" forcing air through the tunnels as they move. |
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| 333. |
The term ‘gene’ was coined by - |
| A. | T. H. Morgan |
| B. | W. L. Johanssen |
| C. | G. Mendel |
| D. | De Vries |
| Answer» B. W. L. Johanssen | |
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Explanation: Wilhelm Johannsen was a Danish botanist, plant physiologist and geneticist. His most well-known research concerned so-calledpure lines of the self-fertile common bean. He was able to show that even in populations homozygous for all traits, i.e. without genetic variation, seed size followed a normal distribution. This was attributable to resource provision to the mother plant and to the position of seeds in pods and of pods on the plant. |
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| 334. |
The study of visceral organs is - |
| A. | Angiology |
| B. | Arthrology |
| C. | Anthrology |
| D. | Splanchnology |
| Answer» D. Splanchnology | |
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Explanation: Splanchology is the scientific study of the viscera and its organs. It studies the characteristics and structure of the visceral system of an animal. It is the study of viscera, which are the organs situated in the thoracic, abdominal and pelvic cavities of the body, and are associated with pleura and peritoneum. There are four major systems identified in the viscera according to their functions, and they are the digestive system, the respiratory system, the urinary system, and the reproductive system. These four major systems are to process bodily intakes for metabolism such as nutrients and oxygen from surrounding and to remove the wastes from the body. One last function of the viscera is to ensure the survival of the species as a whole by conducting the process of reproduction. |
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| 335. |
The branch of biology dealing with the study of cells is known as - |
| A. | Cytology |
| B. | Histology |
| C. | Psychology |
| D. | Physiology |
| Answer» A. Cytology | |
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Explanation: Cytology means "the study of cells". Cytology is that branch of life science, which deals with the study of cells in terms of structure, function and chemistry. Based on usage it can refer to: Cytopathology: the study of cellular disease and the use of cellular changes for the diagnosis of disease; and Cell biology:the study of (normal) cellular anatomy, function and chemistry. |
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| 336. |
The blood cholesterol level in 100ml of blood in a normal person varies between |
| A. | 150 and 200 mg |
| B. | 120 and 200 mg |
| C. | 100 and 180 mg |
| D. | 80 and 160 mg |
| Answer» A. 150 and 200 mg | |
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Explanation: Cholesterol is defined as a waxy alcohol, fat-like substance that occurs naturally in all areas of the human body. Cholesterol is measured in milligrams per 100 millimetres of blood. The normal level of cholesterol varies between 150-200 mg per 100 ml. Any increase in cholesterol level leads to hypercholesterolemia or high cholesterol. Normal cholesterol is 180 mg/dl or 180 mg/ 144ml. < 200 mg/dl is considered to be normal blood cholesterol; 200-239 mg/dL borderline- high; and > 240 mg/dl high cholesterol. |
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| 337. |
Thalassemia is a hereditary disease. It affects - |
| A. | Blood |
| B. | Spleen |
| C. | Lungs |
| D. | Heart |
| Answer» A. Blood | |
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Explanation: Thalassemia are forms of inherited autosomal recessive blood disorders that originated in the Mediterranean region. In thalassemia, the disease is caused by the weakening and destruction of red blood cells. Whilst possessing the ability to cause significant complications, including anaemia, iron overload, bone deformities and cardiovascular illness, thalassemia may confer a degree of protection against malaria, which is or was prevalent in the regions where the trait is common. |
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| 338. |
Which of the following represents a foodchain involving a producer, a vegetarian and a non vegetarian? |
| A. | Grass — Insect — Elephant |
| B. | Plant — Rabbit — Tiger |
| C. | Fish - Insect - Whale |
| D. | Tiger —- Rabbit - Owl |
| Answer» B. Plant — Rabbit — Tiger | |
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Explanation: A food chain is a linear sequence of links in a food web startingfrom a trophic species that eats no other species in the web and ends at a trophic species that is eaten by no other species in the web. Plant, rabbit and tiger form a food chain where plant represents producer, rabbits represent a vegetarian, while tiger represents a non-vegetarian. |
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| 339. |
Which of the following is a large blood vessel that carries blood away from the heart? |
| A. | Vein |
| B. | Artery |
| C. | Capillary |
| D. | Nerve |
| Answer» B. Artery | |
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Explanation: The pulmonary artery carries blood from the right side of the heart to the lungs to pick up a fresh supply of oxygen. |
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| 340. |
Nitrogen fixing bacteria found in the root nodules of leguminous plant is:- |
| A. | Saprophytic |
| B. | Parasitic |
| C. | Symbiotic |
| D. | Autotrophic |
| Answer» C. Symbiotic | |
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Explanation: Many legumes have root nodules that provide a home for symbiotic nitrogen- fixing bacteria called rhizobia. This relationship is particularly common in nitrogen-limited conditions. |
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| 341. |
The total number of vertebrae in a human being is - |
| A. | 26 |
| B. | 30 |
| C. | 29 |
| D. | 33 |
| Answer» D. 33 | |
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Explanation: The vertebral column, also known as backbone or spine, is a bony structure found in Vertebrates. It is formed from the vertebrae. |
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| 342. |
On the average, what percent age of human body has the element of oxygen? |
| A. | 65 |
| B. | 25 |
| C. | 10 |
| D. | 5 |
| Answer» A. 65 | |
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Explanation: This element is obviously the most important element in the human body. Oxygen atoms are present in water, which is the compound most common in the body, and other compounds that make up tissues. It is also found in the blood and lungs due to respiration. In the human body, the oxygen is absorbed by the blood stream in the lungs, being then transported to the cells where an elaborated change process takes place. Oxygen plays a vital role in the breathing processes and in the metabolism of the living organisms. |
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| 343. |
The is responsible for precision of voluntary actions and for maintaining the posture and balance of the body. |
| A. | Mid-brain |
| B. | Cerebellum |
| C. | Cerebrum |
| D. | Spinal cord |
| Answer» B. Cerebellum | |
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Explanation: 0 |
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| 344. |
The age of trees is determined by its |
| A. | girth |
| B. | height |
| C. | growth rings |
| D. | general appearance |
| Answer» C. growth rings | |
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Explanation: Growth rings can determine the age of the trees. Growth rings, also referred to as tree rings or annual rings, can be seen in a horizontal cross section cut through the trunk of a tree. Growth rings are the result of new growth in the vascular cambium. |
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| 345. |
Yeast, used in making bread is a – |
| A. | fungus |
| B. | Plant |
| C. | bacteria |
| D. | seed |
| Answer» A. fungus | |
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Explanation: Yeast are single-celled microorganisms that are classified, along with molds and mushrooms, as members of the Kingdom Fungi. |
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| 346. |
Kidney disease in man is caused by the pollutant - |
| A. | Cadmium |
| B. | Iron |
| C. | Cobalt |
| D. | Carbon |
| Answer» A. Cadmium | |
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Explanation: Cadmium (Cd), a by-product of zinc production, is one of the most toxic elements to which man can be exposed at work or in the environment. Once absorbed, Cd is efficiently retained in the human body, in which it accumulates throughout life. Cd is primarily toxic to the kidney, especially to theproximal tubular cells, the main site of accumulation. Cadmium accumulates in the kidneys and may sometimes cause kidney failure when it is in excess. |
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| 347. |
Fruits of this plant are found underground - |
| A. | Potato |
| B. | Carrot |
| C. | Groundnut |
| D. | Onion |
| Answer» C. Groundnut | |
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Explanation: The peanuts, or groundnut (Arachishypogaea), is a species in the legume "bean" family (Fabaceae). The cultivated peanut was probably first domesticated in the valleys of Peru. It is an annual herbaceous plant growing tall. |
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| 348. |
A rare and endangered animal in Silent Valley is - |
| A. | Musk deer |
| B. | Tiger |
| C. | Lion-tailed macaque |
| D. | Rhinosores |
| Answer» C. Lion-tailed macaque | |
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Explanation: Among the more significant inhabitants of the silent valley forests are the lion tailed macaque which is on list of endangered animal and the Silent Valley is one of their habitats on earth. The lion tailed macaque is one of the most endangered primates of India, confined in distribution to the rainforests of southern Western Ghats. Habitat specialists, they have adapted themselves to the evergreen environments available in the south Indian states of Kerala, Karnataka and Tamil Nadu. |
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| 349. |
The main cause of rancidity in of fats and foods is the oils - |
| A. | hydrolysis |
| B. | oxidation |
| C. | clarification |
| D. | reduction |
| Answer» B. oxidation | |
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Explanation: Rancidity in foods is due to the complete or incomplete oxidation or hydrolysis of fats and oils when exposed to air light,moisture or by bacterial action, resulting in unpleasant taste and odor. |
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| 350. |
The part of the brain responsible for maintain balance like walking in a straight line or riding a bicycle is called – |
| A. | Medulla |
| B. | Pons |
| C. | Pituitary Gland |
| D. | Cerebellum |
| Answer» D. Cerebellum | |
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Explanation: These functions are made possible due to a part of the hind-brain called the cerebellum. It is responsible for precision of voluntary actions. |
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| 351. |
The hybrid between horse and donkey is called - |
| A. | Pony |
| B. | Colt |
| C. | Mule |
| D. | Zebra |
| Answer» C. Mule | |
|
Explanation: The Mule is a cross between a donkey stallion (called a jack) and a horse mare. Mules ears are usually somewhat smaller than a donkeys, longer but the same shape as the horse parents. The mule's conformation will be a combination of traits from both parents. The head, hip and legs usually take after the jack. Mules do not have pronounced arches to the neck, even from breeds such as Arabians or Warm bloods. A slight arch or straight neck is preferable to a ewe, or upward curved neck. |
|
| 352. |
Which of the following is not a member of the vitamin B complex? |
| A. | Thiamine |
| B. | Riboflavin |
| C. | Folic acid |
| D. | Ascorbic acid |
| Answer» D. Ascorbic acid | |
|
Explanation: Vitamin B complex consists of 8 vitamins namely B1, B2, B3, B5, B6, B7, B 9and B12. Vitamin B1 is Thiamine, Vit B2 is Riboflavin, Vit B3 is Niacin, Vit B5 is pantothenic acid, Vit B6 is pyridoxine, biotin, folic acid and Vit B12 is cyanocobalamin. |
|
| 353. |
Cystitis is the infection of which of the following? |
| A. | liver |
| B. | urinary bladder |
| C. | pancreas |
| D. | lung |
| Answer» B. urinary bladder | |
|
Explanation: Cystitis is an infection of the urinary tract that is caused by bacteria. Anyone can develop cystitis, although it is more common in women. |
|
| 354. |
Which of the following makes the skin layer impervious to water? |
| A. | Collagen |
| B. | Melanin |
| C. | Keratin |
| D. | Chitin |
| Answer» C. Keratin | |
|
Explanation: Keratin is a family of fibrous structural proteins. Keratin is the key structural material making up the outer layer of human skin. It is also the key structural component of hair and nails. Keratin monomers assemble into bundles to form intermediate filaments, which are tough and insoluble and form strong un- mineralized tissues found in reptiles, birds, amphibians, and mammals. Cells in the epidermis contain a structural matrix of keratin, which makes this outermost layer of the skin almost waterproof, and along with collagen and elastin, gives skin its strength. |
|
| 355. |
'ELISA' test is employed to diagnose - |
| A. | Polio virus |
| B. | AIDS antibodies |
| C. | Tuberculosis bacterium |
| D. | Cancer |
| Answer» C. Tuberculosis bacterium | |
|
Explanation: ELISA is an abbreviation for "enzymelinked immunosorbent assay." An ELISA test uses components of the immune system and chemicals to detect immune responses In the body (for example, to infectious microbes). |
|
| 356. |
The body temperature is regulated by |
| A. | Pituitory gland |
| B. | Hypothalamus |
| C. | Pineal gland |
| D. | Thyroid gland |
| Answer» B. Hypothalamus | |
|
Explanation: Hypothalamus is a portion of the brain that contains a number of small nuclei with a variety of functions. One of the most important functions of the hypothalamus is to link the nervous system to the endocrine system via the pituitary gland (hypophysis). The hypothalamus is responsible for certain metabolic processes and other activities of the autonomic nervous system. It synthesizes and secretes certain neurohormones, often called hypothalamic- releasing hormones, and these in turn stimulate or inhibit the secretion of pituitary hormones. The hypothalamus controls body temperature, hunger, thirst, fatigue, sleep, and circadian cycles. |
|
| 357. |
The study of extinct animals is called - |
| A. | Herpetology |
| B. | Ornithology |
| C. | Geology |
| D. | Palaeontology |
| Answer» D. Palaeontology | |
|
Explanation: Paleontology is the study of fossils to determine the structure and evolution of extinct animals and plants and the age and conditions of deposition of the rock strata in which they are found. It includes the study of fossils to determine organisms' evolution and interactions with each other and their environments (their paleoecology). As a "historical science" it attempts to explain causes rather than conduct experiments to observe effects. Palaeontological observations have been documented as far back as the 5th century B.C.E. |
|
| 358. |
The medical term used for the sleeplessness is - |
| A. | Somnambulism |
| B. | Insomnia |
| C. | Hallucination |
| D. | Nyctinuria |
| Answer» B. Insomnia | |
|
Explanation: Insomnia, or sleeplessness, is a sleep disorder in which there is an inability to fall asleep or to stay asleep as long as desired. It is most often thought of as both a sign and a symptom that can accompany several sleep, medical, and psychiatric disorders characterized by a persistent difficulty falling asleep and/or staying asleep or sleep of poor quality. Insomnia is typically followed by functional impairment while awake. Insomnia can occur at any age, but it is particularly common in the elderly. |
|
| 359. |
Which one of the following creatures has maximum number of ribs? |
| A. | Crocodile oo |
| B. | Snake |
| C. | Ray fish |
| D. | Flying mammal |
| Answer» B. Snake | |
|
Explanation: Snakes have the maximum number of ribs. On an average they have 200 to 400 bones (Vertibrae) and each have a pair of ribs on either side. |
|
| 360. |
Which one of the following is most important for the growth of children up to the age of 14? |
| A. | Protein |
| B. | Vitamin |
| C. | Fat |
| D. | Milk |
| Answer» A. Protein | |
|
Explanation: Protein is a vital part of a healthy diet for children. This substance, though important for all people, is especially necessary for developing and growing bodies. Protein isused as a source of energy, especially when carbohydrates and fats are at insufficient levels in the diet. In addition, a child needs adequate protein to support the body's production of its own proteins. The manufactured proteins are used in strength maintenance, development of muscles and connective tissues, transportation of oxygen to all areas of the body and antibody production to fight infections. |
|
| 361. |
Sweat glands in mammals are primarily concerned with - |
| A. | removal of excess salts |
| B. | excretion of nitrogenous wastes |
| C. | therrnoregulation |
| D. | sex-attraction |
| Answer» C. therrnoregulation | |
|
Explanation: Sweat glands, or sudoriferous glands, are small tubular structures of the skin that produce sweat. The cause of sweating and body odor stems from our body's temperature regulation system, specifically our sweat glands. Sweating helps maintain our body temperature, hydrates our skin and balances our body fluids and electrolytes, chemicals in our body such as sodium and calcium. |
|
| 362. |
DNA test was developed by – |
| A. | Dr. Alec Jeffreys |
| B. | Dr. V.K. Kashyap |
| C. | Watson and Crick |
| D. | Gregor Mendel |
| Answer» C. Watson and Crick | |
|
Explanation: A genealogical. DNA test looks at a person's genetic code at specific locations. Results give information about genealogy or personal ancestry. James D. Watson and Francis Crick are the two scientists who discovered the structure of DNA in 1953. |
|
| 363. |
An ECG shows the functioning of the |
| A. | brain |
| B. | heart |
| C. | lungs |
| D. | kidneys |
| Answer» B. heart | |
|
Explanation: The electrocardiogram (ECG or EKG) is a diagnostic tool that is routinely used to assess the electrical and muscular functions of the heart. The heart is a two stage electrical pump and the heart's electrical activity can be measured by electrodes placed on the skin. The electrocardiogram can measure the rate and rhythm of the heartbeat, as well as provide indirect evidence of blood flow to the heart muscle. |
|
| 364. |
A vitamin requires cobalt for its activity. The vitamin is - |
| A. | Vitamin B12 |
| B. | Vitamin D |
| C. | Vitamin B2 |
| D. | Vitamin A |
| Answer» A. Vitamin B12 | |
|
Explanation: Vitamin B12, vitamin B1, or vitamin B12, also called cobalarnin, is a water- soluble vitamin with a key role in the normal functioning of the brain and nervous system, and for the formation of blood. It is one of the eight B vitamins. It is normally involved in the metabolism of every cell of the human body, especially affecting DNA synthesis and regulation, but also fatty acid synthesis and energy production. Vitamin B12 consists of a class of chemically related compounds (vitamers), all of which have vitamin activity. It contains the biochemically rare element cobalt. |
|
| 365. |
Plasma membrane in eukaryotic cells is made up of - |
| A. | Phospholipid |
| B. | Lipoprotein |
| C. | Phospholipo-protein |
| D. | Phospho-protein |
| Answer» A. Phospholipid | |
|
Explanation: The cell membrane or plasma membrane is a biological membrane that separates the interior of all cells from the outside environment. The cell membrane is selectively permeable to ions and organic molecules and controls the movement of substances in and outof cells. The basic function of the cell membrane is to protect the cell from its surroundings. |
|
| 366. |
The locomotory organ of 'Amoeba' is |
| A. | Pseudopodia |
| B. | Parapodia |
| C. | Flagella |
| D. | Cilia |
| Answer» A. Pseudopodia | |
|
Explanation: Pseudopods or pseudopodia (singular: pseudopodium) are temporary projections of eukaryotic cells. Cells that possess this faculty are generally referred to as amoeboids. Pseudopodia extend and contract by the reversible assembly of actin subunits into microfilaments. Filaments near the cell's end interact. with myosin which causes contraction. The pseudopodium extends itself until the actin reassembles itself into a network. This is how amoebas move, as well as some cells found in animals, such as white blood cells. They are most commonly found on eubacteria. |
|
| 367. |
The number of chromosomes present in normal human being are - |
| A. | 23 |
| B. | 46 |
| C. | 22 |
| D. | 48 |
| Answer» B. 46 | |
|
Explanation: A chromosomeis an organized structure of DNA and protein found in cells. It is a single piece of coiled DNA containing many genes, regulatory elements and other nucleotide sequences. Chromosomes also contain DNA- bound proteins, which serve to package the DNA and control its functions. Chromosomes in humans can be divided into two types: autosomes and sex chromosomes. Certain genetic traits are linked to a person's sex and are passed on through the sex chromosomes. |
|
| 368. |
The longest bone in the human body is |
| A. | Ulna |
| B. | Humerus |
| C. | Femur |
| D. | Tibia |
| Answer» C. Femur | |
|
Explanation: The femur or thigh bone, is the most proximal (closest to the center of the body) bone of the leg in tetrapod vertebrates capable of walking or jumping, such as most land mammals, birds, many reptiles such as lizards, and amphibians such as frogs. In vertebrates with four legs such as dogs and horses, the femur is found only in the rear legs. The femur is the largest bone in the human body. The head of the femur articulates with the acetabulum. By most measures the femur is one of the strongest bones in the body. |
|
| 369. |
Which of the following is the smallest bird? |
| A. | Pigeon |
| B. | Parrot |
| C. | Humming bird |
| D. | House sparrow |
| Answer» C. Humming bird | |
|
Explanation: Hummingbirds are birds that comprise the family Trochilidae. They are among the smallest of birds, most species measuring in the 7.5-13 cm (3-5 in) range. Indeed, the smallest extant bird species is a hummingbird, the 5-cm Bee Hummingbird. They can hover in mid-air by rapidly flapping their wings 1280 times per second (depending on the species). They are known as hummingbirds because of the humming sound created by their beating wings, which sometimes sound like bees or other insects. |
|
| 370. |
The edible part of Cabbage is - |
| A. | fruit |
| B. | condensed flower |
| C. | vegetative bud |
| D. | inflorescence |
| Answer» C. vegetative bud | |
|
Explanation: In cabbage, the edible part is vegetative bud. Vegetative buds are buds fromwhich vegetative parts like leaves and stems arise, rather than flowers. Enlarged buds or parts of buds form the edible portion of some horticultural crops. Cabbage and head lettuce are examples of unusually large terminal buds. |
|
| 371. |
Which enzyme converts proteins? |
| A. | Pepsin |
| B. | Trypsin |
| C. | Erepsin |
| D. | Enterokinase |
| Answer» B. Trypsin | |
|
Explanation: Trypsin is a serine protease found in the digestive system of many vertebrates, where it hydrolyses proteins. Trypsin in the duodenum catalyses the hydrolysis of peptide bonds so that proteins can be broken down into smaller peptides. These peptides may then be further hydrolyzed into amino acids by other proteases before they enter the blood stream. |
|
| 372. |
The deficiency of iron in man result in |
| A. | Anaemia |
| B. | Night, blindness |
| C. | Scurvy |
| D. | Rickets |
| Answer» A. Anaemia | |
|
Explanation: Anaemia is a condition in which the number of red blood cells or their oxygen- carrying capacity is insufficient to meet physiologic needs, which vary by age, sex, altitude, smoking, and pregnancy status. Iron deficiency is thought to be the most common cause of anaemia globally |
|
| 373. |
Protein which renders a cell less susceptible to attack by viruses is called - |
| A. | Actomyosin |
| B. | Chloromycetin |
| C. | Hybridoma |
| D. | Inferon |
| Answer» D. Inferon | |
|
Explanation: Interferons are proteins which render the cells less susceptible to attack byviruses. Interferons are proteins made and released by host cells in response to the presence of pathogens such as viruses, bacteria, parasites or tumor cells. |
|
| 374. |
Goitre is caused by the deficiency of - |
| A. | Iodine |
| B. | Chlorine |
| C. | Sodium |
| D. | Calcium |
| Answer» A. Iodine | |
|
Explanation: A goitre or goiter is a swelling of the thyroid gland, which can lead to a swelling of the neck or larynx. (voice box). Goitre is a term that refers to an enlargement of the thyroid (thyromegaly) and can be associated with a thyroid gland that is functioning properly or not. Worldwide, the most common cause for goitre is iodine deficiency, usually seen in countries that do not use iodized salt. Selenium deficiency is also considered a contributing factor. In countries that use iodized salt, Hashimoto's thyroiditis is the most common cause. |
|
| 375. |
Which of the following types of light are strongly absorbed by plants? |
| A. | Violet and orange |
| B. | Blue and red |
| C. | Indigo and yellow |
| D. | Yellow and violet |
| Answer» B. Blue and red | |
|
Explanation: As shown in detail in the absorption spectra, chlorophyll absorbs light in the red (long wavelength) and the blue (short wavelength) regions of the visible light spectrum. Green light is not absorbed but reflected. |
|
| 376. |
Which acid is present in lemon – |
| A. | malic acid |
| B. | citric acid |
| C. | lactic acid |
| D. | tartaric acid |
| Answer» B. citric acid | |
|
Explanation: The main organic acids contained in the flesh of lemons are citric acid and malic acid. The sourness of citrus fruit is the taste of citric acid. |
|
| 377. |
Iodoform is used as an : |
| A. | antipyretic |
| B. | analgesic |
| C. | antiseptic |
| D. | anaesthetic |
| Answer» C. antiseptic | |
|
Explanation: A pale yellow, crystalline, volatile substance, it has a penetrating odor and, analogous to chloroform, sweetish taste. It is occasionally used as a disinfectant. Around the beginning of the 20th century it was used in medicine as a healing and antiseptic dressing for wounds and sores, although this use is now superseded by superior antiseptics. Adolf Hitler's mother, Mara Hitler, died of iodoform poisoning brought on by her treatment for breast cancer. |
|
| 378. |
An instrument for measuring blood pressure is called - |
| A. | Barometer |
| B. | Spirometer |
| C. | Sphygmomanometer |
| D. | Haemocytometer |
| Answer» C. Sphygmomanometer | |
|
Explanation: A sphygmomanometer or blood pressure meter is a device used to measure blood pressute, composed of an inflatable cuff to restrict blood flow, and a mercury or mechanical manometer to measure the pressure. It is always used in conjunction with a means to determine at what pressure blood flow is just starting, and at what pressure it is unimpeded. Manual sphygmomanometers are used in conjunction with a stethoscope. The device was invented by Samuel Siegfried Karl Ritter von Basch in 1881. |
|
| 379. |
The term 'Rh factor' refers to - |
| A. | Rhesus factor |
| B. | Rheumatoid factor |
| C. | Renal factor |
| D. | Rhombic factor |
| Answer» A. Rhesus factor | |
|
Explanation: Each person's blood is one of four major types: A, B, AB, or O. Blood types are determined by the types of antigens on the blood cells. Antigens are proteins on the surface of blood cells that can cause a response from the immune system. The Rh factor (Rhesus factor) is a type of protein on the surface of red blood cells. Most people who have the Rh factor are Rh-positive. |
|
| 380. |
Which one of the following is also called the 'power plants' of the cell? |
| A. | Golgi body |
| B. | Mitochondrion |
| C. | Ribosome |
| D. | Lysosome |
| Answer» B. Mitochondrion | |
|
Explanation: In cell biology, a mitochondrion (plural mitochondria) is a membrane-enclosed organelle found in most eukaryotic cells. These organelles range from 0.5 to .0 micrometer (im) in diameter. Mitochondria are sometimes described as "cellular power plants" because they generate most of the cell's supply of adenosine triphosphate (ATP), used as a source of chemical energy. |
|
| 381. |
What is the chemical name ofvinegar? |
| A. | Citric acid |
| B. | Acetic acid |
| C. | Pyruvic acid |
| D. | Mahe acid |
| Answer» B. Acetic acid | |
|
Explanation: Vinegar is a liquid substance consisting mainly of acetic acid (CH3CO2H) and water, the acetic acid being produced through the fermentation of ethanol by acetic acid bacteria. It is today mainly used in the kitchen as a general cooking ingredient, but historically, as the most easily available mild acid, it had a great variety of industrial, medical, and domestic uses, some of which (such as a general household cleanser) are still promoted today. |
|
| 382. |
pH of blood is – |
| A. | 10.4 |
| B. | 9 |
| C. | 7.4 |
| D. | 4 |
| Answer» C. 7.4 | |
|
Explanation: A pH of 7 is neutral. The lower the pH, the more acidic the blood. A variety of factors affect blood pH including what is ingested, vomiting, diarrhea, lung function, endocrine function, kidney function, and urinary tract infection. The normal blood pH is tightly regulated between 7.35 and 7.45. |
|
| 383. |
Smaller roots coming out of main root is called as . |
| A. | Tap root |
| B. | Lateral root |
| C. | Fibrous root |
| D. | Ring root |
| Answer» B. Lateral root | |
|
Explanation: Lateral roots extend horizontally from the primary root (radicle) and serve to anchor the plant securely into the soil. |
|
| 384. |
The vitamin that helps to prevent infections in the human body is - |
| A. | vitamin A |
| B. | vitamin B |
| C. | vitamin C |
| D. | vitamin D |
| Answer» C. vitamin C | |
|
Explanation: Vitamin C or L-ascorbic acid, or simply ascorbate the anion of ascorbic acid), is an essential nutrient for humans and certain other animal species. Vitamin C is found in high concentrations in immune cells, and is consumed quickly during infections. It is not certain how vitamin C interacts with the immune system: it has been hypothesized to modulate the activities of phagocytes, the production of cytokines and lymphocytes, and the number of cell adhesion molecules in monocytes. |
|
| 385. |
The normal RBC count in adult male is |
| A. | 5.5 million |
| B. | 5.0 million |
| C. | 4.5 million |
| D. | 4.0 million |
| Answer» B. 5.0 million | |
|
Explanation: An RBC count is a blood test that tells how many red blood cells (RBCs) we have. RBCs contain hemoglobin, which carries oxygen. How much oxygen our body tissues get depends on how many RBCs we have and how well they work. The general the range is as follows: Male: 4.7 to 6.1 million cells per microliter (cells/meld); and Female: 4.2 to 5.4 million cells/meld. |
|
| 386. |
Study of newly born up to the age of 3 months is called - |
| A. | Chorology |
| B. | Conchology |
| C. | Nematology |
| D. | Neonatology |
| Answer» D. Neonatology | |
|
Explanation: Neonatology is a subspecialty of pediatrics that consists of the medical care of newborn infants, especially the ill or premature newborn infant. It is a hospital-based specialty, and is usually practiced in neonatal intensive care units (NICUs). The principal patients of neonatologists are newborn infants who are ill or requiring special medical care due to prematurity, low birth weight, intrauterine growth retardation, congenital malformations (birth defects), sepsis, pulmonary hyperplasia or birth asphyxial. |
|
| 387. |
Which one of the following does not secrete any digestive enzyme? |
| A. | Liver |
| B. | Salivary gland |
| C. | Glands of small intestine |
| D. | Pancreas |
| Answer» A. Liver | |
|
Explanation: Digestive enzymes are enzymes that break down polymeric macromolecules into their smaller building blocks, in order to facilitate their absorption by the body. Digestive enzymes are found in the digestive tracts of animals (including humans) and in the traps of carnivorous plants, where they aid in the digestion of food, as well as inside cells, especially in their lysosomes, where they function to maintain cellular survival. Digestive enzymes are diverse and are found in the saliva secreted by the salivary glands, in the stomach secreted by cells lining the stomach, in the pancreatic juice secreted by pancreatic exocrine cells, and in the intestinal (small and large) secretions, or as part of the lining of the gastrointestinal tract. |
|
| 388. |
The causative agent of Tuberculosis is |
| A. | Mycobacterium |
| B. | Aspergillus |
| C. | Rhabdovirus |
| D. | HIV. |
| Answer» A. Mycobacterium | |
|
Explanation: Mycobacterium is a genus of Actinobacteria, given its own family, the Mycobacteriaceae. The genus includes pathogens known to cause serious diseases in mammals, including tuberculosis and leprosy. Mycobacterial infections are notoriously difficult to treat. The organisms are hardy due to their cell wall, which is neither truly Gram negative nor positive. In addition, they are naturally resistant to a number of antibiotics that disrupt cell-wall biosynthesis, such as penicillin. |
|
| 389. |
The enzyme that is present in the saliva of man is - |
| A. | Pepsin |
| B. | Renin |
| C. | Amylase |
| D. | Trypsin |
| Answer» C. Amylase | |
|
Explanation: Amylase is an enzyme that catalyses the breakdown of starch into sugars. Amylase is present in human saliva, where it begins the chemical process of digestion. Foodsthat contain much starch but little sugar, such as rice and potato, taste slightly sweet as they are chewed because amylase turns some of their starch into sugar in the mouth. The pancreas also makes amylase (alpha amylase) to hydrolyse dietary starch into disaccharides and trisaccharides which are converted by other enzymes to glucose to supply the body with energy. Plants and some bacteria also produce amylase. As diastase, amylase was the first enzyme to be discovered and isolated. |
|
| 390. |
The seeds of certain plants fail to germinate if they do not pass through the digestive tract of fruit-eating birds. This is due to - |
| A. | hibernation |
| B. | seed coat impermeability |
| C. | infertility |
| D. | vegetative reproduction |
| Answer» B. seed coat impermeability | |
|
Explanation: A dormant seed is one that is unable to germinate in a specified period of time under a combination of environmental factors that are normally suitable for the germination of the non-dormant seed. Dormancy is a mechanism to prevent germination during unsuitable ecological conditions, but the probability of seedling survival is low. |
|
| 391. |
Animals having open circulatory system POSSESSES – |
| A. | coelenteron |
| B. | spongocoel |
| C. | pseudocoel |
| D. | haemocoel |
| Answer» D. haemocoel | |
|
Explanation: Open circulatory system is the one in which blood does not circulate only inside blood vessels but it also falls in cavities that irrigate tissues. The internal organs are suspended in a network of blood-filled sinuses or open spaces which collectively form the haemocoel. |
|
| 392. |
Which of the following weeds has been found useful to check water pollution caused by industrial affluents? |
| A. | Parthenium |
| B. | Elephant grass |
| C. | Water hyacinth |
| D. | Both (1) and (2) above |
| Answer» C. Water hyacinth | |
|
Explanation: Around the world, there is an increasing trend in areas of land, surface waters and groundwater affected by contamination from industrial, military and agricultural activities due to either ignorance, lack of vision, or carelessness. |
|
| 393. |
Which of the following is correlated with blood pressure? |
| A. | Liver |
| B. | Testis |
| C. | Pancreas |
| D. | Adrenal |
| Answer» D. Adrenal | |
|
Explanation: Blood pressure is an important indicator of adrenal health and function. Mild adrenal weakness is usually accompanied by normal to high blood pressure. As Adrenal Fatigue advances, low blood pressure, at rest or related to posture becomes more prevalent. |
|
| 394. |
Blood cancer is otherwise called as - |
| A. | Anaemia |
| B. | Polycythemia |
| C. | Leucopenia |
| D. | Leukaemia |
| Answer» D. Leukaemia | |
|
Explanation: Leukemia is a type of cancer of the blood or bone marrow characterized by an abnormal increase of immature white blood cells called "blasts". Leukemia is a broad term covering a spectrum of diseases. In turn, it is part of the even broader group of diseases affecting the blood, bone marrow, and lymphoid system, which are all known as hematological neoplasms. |
|
| 395. |
Which one of the following glands in the human body stores iodine? |
| A. | Parathyroid |
| B. | Thyroid |
| C. | Pituitary |
| D. | Adrenal |
| Answer» B. Thyroid | |
|
Explanation: Iodine is mostly concentrated in thyroid gland. A healthy adult body contains 15- 20 mg of iodine, 7080% of which is stored in the thyroid gland |
|
| 396. |
Which one of the following is related to Silviculture? |
| A. | Culture of Hilsa |
| B. | Culture of silver carp |
| C. | Culture of oil-producing plants |
| D. | Forest crops |
| Answer» D. Forest crops | |
|
Explanation: Silviculture is the practice of controlling the establishment, growth, composition, health, and quality of forests to meet diverse needs and values. The name comes from the Latin silver (forest) + culture (as in growing). The study of forests and woods is termed silvology. Forest regeneration is the act of renewing tree cover by establishing youngtrees naturally or artificially, generally promptly after the previous stand or forest has been removed. |
|
| 397. |
Which of the following is the sweetest sugar? |
| A. | Sucrose |
| B. | Glucose |
| C. | Fructose |
| D. | Maltose |
| Answer» C. Fructose | |
|
Explanation: Sucrose has a relative sweetness of 1.0, while Splenda (Sucralose) of the same quantity is about 600 times sweeter. Fructose is the sweetest of all natural sugar types, with a relative sweetness of 1.73. Xylitol is roughly as sweet as sucrose. Glucose, which is the main component of starch, has a relative sweetness of 0.6-0.7. Of all the sugars, Lactose is the least sweet, with a relative sweetness of 0.16. |
|
| 398. |
The H5N1 virus which causes bird flu was first discovered in - |
| A. | 1991 |
| B. | 1995 |
| C. | 1997 |
| D. | 2001 |
| Answer» C. 1997 | |
|
Explanation: Influenza A virus subtype H5N1, also known as "bird flu", A(H5N1) or simply H5N1, is a subtype of the influenza A virus which can cause illness in humans and many other animal species. H5N1 isolates found in Hong Kong in 1997 and 2001 were not consistently transmitted efficiently among birds .and did not cause significant disease in these animals. In 2002, new isolates of H5N1 were appearing within the bird population of Hong Kong. These new isolates caused acute disease, including severe neurological dysfunction and death in ducks. This was the first reported case of lethal influenza virus infection in wild aquatic birds since 1961. |
|
| 399. |
Denaturation of a protein is caused by – |
| A. | Heat |
| B. | Acid |
| C. | High salt concentration |
| D. | All of the above |
| Answer» D. All of the above | |
|
Explanation: Denaturation of proteins involves the disruption and possible destruction of both the secondary and tertiary structures. |
|
| 400. |
Which of the following hormone is called emergency hormone? |
| A. | Insulin |
| B. | Adrenaline |
| C. | Oestrogen |
| D. | Oxytocin |
| Answer» B. Adrenaline | |
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Explanation: In this situation, the adrenal medulla secretes extra adrenaline and noradrenaline into the bloodstream. The hormones have important effects on the body. |
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