McqMate
These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: General Knowledge (GK) .
| 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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