McqMate
These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: General Knowledge (GK) .
| 1201. |
The deficiency of Niacina vitamin of B complex group causes the disease - |
| A. | Marasmus |
| B. | Pellagra |
| C. | Rickets |
| D. | Nightblindness |
| Answer» B. Pellagra | |
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Explanation: Pellagra is a vitamin deficiency disease most frequently caused by a chronic lack of niacin (vitamin B3) in the diet. It can be caused by decreased intake of niacin or tryptophan, and possibly by excessive intake of leucine. It may also result from alterations in protein metabolism in disorders such as carcinoid syndrome or Hartnup disease. |
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| 1202. |
A pair of contrasting characters controlling the same trait is called - |
| A. | factors |
| B. | loci |
| C. | allele |
| D. | lineage |
| Answer» C. allele | |
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Explanation: An allele is one of a pair of genes that appear at a particular location on a particular chromosome and control the same characteristic, such as blood type or colorblindness. Alleles are also called alleleomorphs. If the two alleles are identical, the individual is called a homozygote; when the two alleles are different, the individual is a heterozygote. |
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| 1203. |
Which of the following are also known as 'Suicidal Bag of Cells'? |
| A. | Lysosomes |
| B. | Lycosome |
| C. | Nucleus |
| D. | Chromosome |
| Answer» A. Lysosomes | |
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Explanation: Lysosomes are membrane enclosed organelles that are known as 'Suicidal Bag of Cells'. |
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| 1204. |
The main protein found in milk is |
| A. | Albumin |
| B. | Globulin |
| C. | Globin |
| D. | Casein |
| Answer» D. Casein | |
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Explanation: The major proteins in milk are casein and whey. These two milk proteins are both excellent sources of all the essential amino acids, but they differ in one important aspect— whey is a fast-digesting protein and casein is a slow-digesting protein. As a food source, casein supplies amino acids, carbohydrates, and the two inorganic elements calcium and phosphorus. |
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| 1205. |
The liberation of oxygen during photosynthesis is due to - |
| A. | hydrolysis of carbohydrates |
| B. | photolysis of water |
| C. | reduction of CO2 |
| D. | breakdown of chlorophyll |
| Answer» B. photolysis of water | |
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Explanation: In the process of photosynthesis, oxygen is produced from the photolysis of water. The photolysis of water occurs when light is used to renew split water and adenosine triphosphate, also referred to as ATP. The hydrogen remains in the leaf and participates in further reactions. |
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| 1206. |
What is the main purpose of white blood corpuscles? |
| A. | to carry nutrients |
| B. | to combat infections |
| C. | to carry oxygen |
| D. | to give strength |
| Answer» B. to combat infections | |
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Explanation: White blood cells (WBCs), also called leukocytes, are an important part of the immune system. These cells help fight infectionsby attacking bacteria, viruses, and germs that invade the body. White blood cells originate in the bone marrow, but circulate throughout the bloodstream. |
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| 1207. |
The oxygen liberated during photosymthesis comes from - |
| A. | Water |
| B. | Carbon dioxide |
| C. | Glucose |
| D. | Chlorophyll |
| Answer» A. Water | |
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Explanation: The oxygen produced during photosynthesis comes from water. The electrons excited by light in the chlorophyll molecule are replaced by electrons produced from the oxidation of water into oxygen. Photosynthesis combines water and carbon dioxide into sugars, leaving oxygen gas as a waste product. |
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| 1208. |
Kyoto Protocol is associated with - |
| A. | Species conservation |
| B. | Climate change |
| C. | Wetland Conservation |
| D. | Medicinal plants |
| Answer» B. Climate change | |
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Explanation: The Kyoto Protocol is an international agreement linked to the United Nations Framework Convention on Climate Change, which commits its Parties by set-ting internationally binding emission reduction targets. It was adopted in Kyoto, Japan, on 11 December 1997 and entered into force on 16 February 2005. |
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| 1209. |
The name of the longest muscle in human body is – |
| A. | Sartorius muscle |
| B. | Massete muscle |
| C. | Stapedius muscle |
| D. | Gluteus Maximus muscle |
| Answer» A. Sartorius muscle | |
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Explanation: The Sartorius muscle is the longest muscle in the human body. It is a long, thin, superficial muscle that runs down the length of the thigh in the anterior compartment. Its upper portion forms the lateral border of the femoral triangle. |
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| 1210. |
A prokaryotic cell does not have which of the followin |
| A. | Ribosomes |
| B. | Cell membrane |
| C. | Nucleus |
| D. | DNA |
| Answer» C. Nucleus | |
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Explanation: Prokaryotic cells do not contain a nucleus or any other membrane-bound organelle. The word "prokaryotic" means "before nucleus." Prokaryotes include two groups: bacteria and another group called archaea. In contrast, eukatyotic cells have etrue" nucleus containing their DNA. |
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| 1211. |
What would be the formula of Fructose? |
| A. | C5H10O5 |
| B. | C6H12O6 |
| C. | C6H10O5 |
| D. | C6H10O8 |
| Answer» B. C6H12O6 | |
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Explanation: Fructose, or fruit sugar, is a simple ketonic monosaccharide found in many plants, where it is often bonded to glucose to form the disaccharide sucrose. It is a 6-carbonpolyhydroxyketone with chemical formula of C6H12O6. Fructose was discovered by French chemist Augustin-Pierre Dubrunfaut in 1847. |
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| 1212. |
The basic unit of biosystematics is - |
| A. | Phenotype |
| B. | Ecotype |
| C. | Florotype |
| D. | Genotype |
| Answer» B. Ecotype | |
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Explanation: Ecotype is the basic unit of Biosystematics. It is adapted to a particular environment but capable of producing fully fertile hybrids with other ecotypes. The term Ecotype was proposed by Turesson. According to him Ecotype is "an ecological unit to cover the product arising as a result of genotypical response of an ecospecies to a particular habitat." |
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| 1213. |
Which endocrine gland is found in chest cavity? |
| A. | Pineal gland |
| B. | Thymus gland |
| C. | Adrenal gland |
| D. | Thyroid gland |
| Answer» B. Thymus gland | |
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Explanation: The endocrine glands are widely distributed throughout the body. The pituitary gland, pineal gland and hypothalamus are located in the skull. The thyroid and parathyroid glands are in the neck, and the thymus gland is in the thoracic (chest) cavity. The thymus gland is only active until puberty. It helps the body protect itself against autoimmunity. |
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| 1214. |
In B.C.G. Vaccine the word 'C' stands for |
| A. | Calmette |
| B. | Cough |
| C. | Chlorine |
| D. | Cadmium |
| Answer» A. Calmette | |
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Explanation: The acronym BCG stands for Bacillus Calmette-- Guerin, a vaccine against tuberculosis and for the treatment of some bladder cancers. It is prepared from a strain of the attenuated (virulence-reduced) live bovine tuberculosis bacillus, Mycobacterium bovis. It is on the World Health Organization's List of Essential Medicines. |
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| 1215. |
The presence of pollutants in the environment is usually expressed in ppm, where ppm stands for: |
| A. | particles per mole |
| B. | purity per microgram |
| C. | pollutant prevent measures |
| D. | parts per million |
| Answer» D. parts per million | |
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Explanation: PPM is an abbreviation of Parts Per Million. It is commonly used as a measure of small levels of pollutants in air, water, body fluids, etc. Parts per million is the mass ratio between the pollutant component and the solution. |
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| 1216. |
Allarltois of Embryo helps in - |
| A. | digestion |
| B. | excretion |
| C. | respiration |
| D. | protection |
| Answer» B. excretion | |
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Explanation: The allantois is the sac-like extra- embryonic membrane that removes waste from the embryo. As the embryo grows, so does the allantois, eventually pressing against the chorion. This allows the allantois to exchange oxygen and carbon dioxide with the air out-side the eggshell. In addition, the allantois also serves as a disposal site for uric acid. |
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| 1217. |
Which one of the following animals belongs to mollusca? |
| A. | Haliotis |
| B. | Hare |
| C. | Hydra |
| D. | Hyla |
| Answer» B. Hare | |
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Explanation: Sea hares are molluscs. They belong to Phylum Mollusca and Class Gastropoda like snails. Like many other sea slugs (Subclass Opistobranchia), sea hares lack external shells as adults. Sea hares belong to Order Anaspidea. |
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| 1218. |
The site where complete digestion of carbohydrates, proteins and fats takes place is called – |
| A. | Liver |
| B. | Stomach |
| C. | Large Intestine |
| D. | Small Intestine |
| Answer» D. Small Intestine | |
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Explanation: The small intestine is the site of the complete digestion of carbohydrates, proteins and fats. It receives the secretions of the liver and pancreas for this purpose. |
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| 1219. |
Polio is caused by – |
| A. | Bacteria |
| B. | Virus |
| C. | Fungus |
| D. | Protozoa |
| Answer» B. Virus | |
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Explanation: Poliomyelitis, often called polio or infantile paralysis, is an infectious disease caused by the poliovirus. |
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| 1220. |
Phototropic movement is controlled by |
| A. | Auxin |
| B. | Gibberellin |
| C. | Cytolthiin |
| D. | Ethylene |
| Answer» A. Auxin | |
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Explanation: Phototropism is the growth of organisms in response to light. In plants, phototropism is a response to blue wavelengths of light and is caused by a redistribution of auxin from the illuminated side to the darker side of the shoot, resulting in quicker growth on the darker side and bending of the shoot toward the source of light. |
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| 1221. |
Lactogenic hormone is secreted by - |
| A. | Mammary glands |
| B. | Placenta |
| C. | Ovary |
| D. | Pituitary |
| Answer» D. Pituitary | |
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Explanation: Lactogenic hormone is gonadotropic hormone which is secreted by the anterior pituitary. In females, it stimulates growth of the mammary glands and lactation after parturition. |
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| 1222. |
The type of fruit obtained from a multicarpillary, apocarpous gynoecium is: |
| A. | composite |
| B. | aggregate |
| C. | simple |
| D. | multiple |
| Answer» B. aggregate | |
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Explanation: Aggregate fruits are the group of fruitlets which develop from the multicarpellary, apocarpous ovary. Flowers with apocarpous multiple gynoecium are apt to give rise to a number of fruits as there are a number of free ovaries, each capable of giving rise to one fruit. Berries are good example of such fruits. |
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| 1223. |
The plants, which grow under water stress conditions of deserts are - |
| A. | Epiphytes |
| B. | Xerophytes |
| C. | Heliophytes |
| D. | Sciophytes |
| Answer» B. Xerophytes | |
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Explanation: The term xerophyte refers to a plant species that has evolved over time to adapt to dry regions like deserts. Xerophytes have adapted to be able to keep extremely large amounts of water for a long period of time. Without this capability, the plant would die, as the desert region itself does not provide enough water to sustain life. |
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| 1224. |
Which of the following is an example of parasitic alga? |
| A. | Ulothrix |
| B. | Cephaleuros |
| C. | Oedogonium |
| D. | Sargassum |
| Answer» B. Cephaleuros | |
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Explanation: Cephaleuros is a genus of parasitic thalloid algae comprising approximately 14 species. Its common name is red rust. The alga is parasitic on tea, coffee,mango and guava causing damage limited to the area of algal growth on leaves. |
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| 1225. |
The oilseed which is not edible - |
| A. | Sunflower |
| B. | Cottonseed |
| C. | Sesamurn |
| D. | Groundnut |
| Answer» B. Cottonseed | |
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Explanation: Cottonseed is a non-edible oilseed. Gossypol is a. toxic compound found in the cotton plant. This compound is concentrated in the cottonseed but can also be found in other parts of the plant such as hulls, leaves and stems. Gossypol affects mainly the heart and liver. |
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| 1226. |
Which fruit has its seed out? |
| A. | Strawberry |
| B. | Banana |
| C. | Groundnut |
| D. | Cashew nut |
| Answer» A. Strawberry | |
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Explanation: True berries, such as blueberries and cranberries have seeds inside. The strawberry, however has its dry, yellow "seeds" on the outside (each of which is actually considered a separate fruit). The "seeds" seen on the outside of a strawberry are actually the plant's ovaries and are called "achenes." |
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| 1227. |
For immediate energy production in cells, one should take – |
| A. | Glucose |
| B. | Proteins |
| C. | Vitamin C |
| D. | Sucrose |
| Answer» A. Glucose | |
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Explanation: Glucose provides immediate energy for our brain and red blood cells. The most pressing need of all cells in the body is for an immediate source of energy. Some cells such as brain cells have severely limited storage |
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| 1228. |
Outside the nucleus DNA is found in - |
| A. | Golgi bodies |
| B. | Mitochondria |
| C. | Ribosome |
| D. | Endoplasmic reticulum |
| Answer» B. Mitochondria | |
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Explanation: In eukaiyotic (with nucleus) cells, the vast majority of DNA is found in the nucleus as discrete bodies called chromosomes. The exception to this being the small amount of DNA found in organdies outside the nucleus (mitochondria and chloroplasts). In human cells, more than 99% of the total DNA is nuclear genomic DNA and the remainder mitochondrial. |
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| 1229. |
Animal protein is called first class protein because it is - |
| A. | easily digestible |
| B. | delicious in taste |
| C. | cheaper in the market |
| D. | rich in essential amino acids |
| Answer» D. rich in essential amino acids | |
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Explanation: Proteins from animals are called 'first class' proteins - they provide all the essential amino acids, including those that the body can't make. Proteins from plants are 'second class' proteins. |
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| 1230. |
Which one of the following is an autotroph? |
| A. | Butterfly |
| B. | Algae |
| C. | Grasshopper |
| D. | Mushroom |
| Answer» B. Algae | |
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Explanation: An autotroph is an organism that can produce its own food using light, water, carbon dioxide, or other chemicals. Plants are the most familiar type of autotroph, but there are many different kinds of autotrophic organisms.Algae, which live in water and whose larger forms are known as seaweed, is autotrophic. |
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| 1231. |
Soilless agriculture refers to - |
| A. | Hydroponics |
| B. | Hygroponies |
| C. | Sericulture |
| D. | Inter-cropping |
| Answer» A. Hydroponics | |
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Explanation: Hydroponics is a subset of hydroculture and is a method of growing plants using mineral nutrient solutions, in water, without soil. Terrestrial plants may be grown with their roots in the mineral nutrient solution only, or in an inert medium, such as perlite or gravel. Hydroponics is a subset of soilless culture. |
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| 1232. |
An organism that transmits disease from one individual to another is called - |
| A. | Hybrid |
| B. | Fragment |
| C. | Vector |
| D. | Clone |
| Answer» C. Vector | |
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Explanation: 0 |
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| 1233. |
Which part of the cinchona yields a drug? |
| A. | Pericarp |
| B. | Bark |
| C. | Endosperm |
| D. | Leaf |
| Answer» B. Bark | |
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Explanation: The bark of cinchona tree yields quinine, a white crystalline alkaloid having antipyretic (fever-reducing), anti-malarial, analgesic (painkilling), and anti-inflammatory properties. Quinine was the first effective Western treatment for malaria caused by Plas- modium falciparum. |
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| 1234. |
Which of the following is another name for the fish farming revolution? |
| A. | Blue revolution |
| B. | White revolution |
| C. | Yellow revolution |
| D. | Brown revolution |
| Answer» A. Blue revolution | |
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Explanation: Blue Revolution means the adoption of a package programme to increase the production of fish and marine products. The Blue Revolution in India was started in 1970 during the Fifth Five-Year Plan when the Central Government sponsored the Fish Farmers Development Agency. |
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| 1235. |
Which of the following procedure treats spinal stenosis (stricture)? |
| A. | Laminoplasty |
| B. | Corpectomy |
| C. | Foraminotomy |
| D. | All of the above |
| Answer» D. All of the above | |
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Explanation: 0 |
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| 1236. |
Which of the following range of Air Pollutant Index is considered as hazardous? |
| A. | 301-500 |
| B. | 201-300 |
| C. | 101-200 |
| D. | 401-500 |
| Answer» A. 301-500 | |
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Explanation: An Air Quality Index (AQI) of 301-500 is considered as hazardous to human health. It denotes the severely polluted state of air. AQI values over 300 trigger health warnings of emergency conditions. The entire population is even more likely to be affected by serious health effects. |
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| 1237. |
DNA shows hyperchromicity on: |
| A. | heating |
| B. | cooling |
| C. | crystallizing |
| D. | replication |
| Answer» A. heating | |
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Explanation: When a DNA solution is heated enough, the double-stranded DNA unwinds, and the Hydrogen bonds that hold the two strands together weaken and finally break. The process of breaking a double-stranded DNA into single strands is known as DNA denaturation, or DNA melting. The hyperchromicity of DNA occurs when the DNA duplex is denatured. |
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| 1238. |
Meibornian glands are located in - |
| A. | Eye |
| B. | Ear |
| C. | Nose |
| D. | Skin |
| Answer» A. Eye | |
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Explanation: Meibomian glands are the tiny oil glands which line the margin of the eyelids (the edges which touch when the eyelids are closed). These glands secrete oil which coats the surface of our eyes and keeps the water component of our tears from evaporating (drying out). Together, the water and the oil layer make up the tear film. |
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| 1239. |
Which of the following vitamins are water soluble? |
| A. | Vit. A and Vit. B |
| B. | Vit. B and Vit. C |
| C. | Vit. C and Vit. D |
| D. | Vit. A and Vit. K |
| Answer» B. Vit. B and Vit. C | |
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Explanation: Vitamins are classified as either fat soluble (vitamins A. D, E and K) or water soluble (vitamins B and C).The fat soluble vitamins are soluble in lipids (fats); water- soluble vitamins are those that dissolve in water upon entering the body. Because of this, our body cannot store excess amounts of water- soluble vitamins for later use. |
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| 1240. |
Siderosis is a disease caused by the inhalation of - |
| A. | silica dust |
| B. | iron dust |
| C. | zinc dust |
| D. | coal dust |
| Answer» B. iron dust | |
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Explanation: Siderosis, also known by the name of Welder's Lung is a pathological condition of the lungs caused by chronic exposure to iron oxide dust, usually at the workplace. Siderosis is considered to be an occupational illness because people breathe in the iron dust at work. The condition usually shows up on X-rays as small, opaque spots ori the worker's lungs. |
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| 1241. |
Which of the following is used as anaesthetics? |
| A. | N2 |
| B. | N2O |
| C. | CHI |
| D. | CO2 |
| Answer» B. N2O | |
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Explanation: Nitrous oxide (N2O) is a colorless, odorless gas that is used as an anesthetic and analgesic. It is used in surgery and dentistry for its anaesthetic and analgesic effects. It is known as "laughing gas" due to the euphoric effects of inhaling it, a property that has led to its recreational use as a dissociative anaesthetic. |
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| 1242. |
Which organ gets affected in Weirs disease? |
| A. | Liver |
| B. | Lung |
| C. | Heart |
| D. | Kidney |
| Answer» D. Kidney | |
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Explanation: Weil's disease is a severe form of leptospirosis, a type of infection caused by Leptospira bacteria. The classic form of severe leptospirosis is known as Weil's disease, whichis characterized by liver damage (causing jaundice), kidney failure, and bleeding. |
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| 1243. |
The first protocol to ban the emissions of choloroflurocarbons in the atmosphere was made in |
| A. | Montreal |
| B. | Osaka |
| C. | Geneva |
| D. | Florida |
| Answer» A. Montreal | |
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Explanation: The first protocol to ban the emissions of chlorof-luorocarbons in the atmosphere was signed in Montreal, Canada in 1987. Known as Montreal Protocol on Substances that Deplete the Ozone Layer, it is an international treaty designed to protect the ozone layer by phasing out the production of numerous substances that are responsible for ozone depletion. |
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| 1244. |
Algal bloom results from – |
| A. | Global warming |
| B. | Salination |
| C. | Eutrophication |
| D. | Biomagnification |
| Answer» C. Eutrophication | |
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Explanation: An algal bloom is a rapid increase or accumulation in the population of algae in freshwater or marine water systems, and are recognized by the discoloration in the water from their pigments. Algal blooms are the consequence of the enrichment of a water body with nutrients, usually with an excess amount of nutrients. This is known as eutrophication. |
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| 1245. |
Which of the following is a Dominant Autosomal Disorder? |
| A. | Albinism |
| B. | Cystic Fibrosis |
| C. | Phenyl Ketorunia |
| D. | Alzheimer's Disease |
| Answer» D. Alzheimer's Disease | |
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Explanation: In an autosomal dominant disorder, the mutated gene is a dominant gene located on one of the nonsex chromosomes (autosomes). The early-onset form of Alzheimer disease is inherited in an autosomal dominant pattern, which means one copy of the altered gene in each cell is sufficient to cause the disorder. In most cases, an affected person inherits the altered gene from one affected parent. |
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| 1246. |
The latex of which plant is used commercially? |
| A. | Papaya plant |
| B. | Sial kanta plant |
| C. | Rubber plant |
| D. | Banyan tree |
| Answer» C. Rubber plant | |
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Explanation: Natural rubber is harvested mainly in the form of the latex from the rubber tree. The latex is a sticky, milky colloid drawn off by making incisions in the bark and collecting the fluid in vessels in a process called "tapping". The latex then is refined into rubber ready for commercial processing. |
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| 1247. |
Which of the following causes swine flu? |
| A. | Bacteria |
| B. | Fungi |
| C. | Tapeworm |
| D. | Virus |
| Answer» D. Virus | |
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Explanation: Swine influenza, also called pig influenza, swine flu, hog flu and pig flu, is an infection caused by any one of several types of swine influenza viruses. Swine flu, also known as the H1N1 virus, is a relatively new strain of an influenza virus that causes symptoms similar to the regular flu. It originated in pigs, but is spread primarily from person to person. |
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| 1248. |
Which of the following plays an important role in photosynthesis? |
| A. | Chloroplast |
| B. | Centrosome |
| C. | Tonoplast |
| D. | Nematoblast |
| Answer» A. Chloroplast | |
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Explanation: chloroplast is an organelle unique to plant cells that contains chlorophyll (makes plants green) and is responsible for enabling photosynthesis. The chloroplasts conduct photosynthesis, where the photosynthetic pigment chlorophyll captures the energy from sunlight and converts it and stores it in the energy-storage molecules while freeing oxygen from water. |
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| 1249. |
What is the transplantation of graft between genetically identical individuals? |
| A. | Autograft |
| B. | Isograft |
| C. | Allograft |
| D. | Xenograft |
| Answer» B. Isograft | |
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Explanation: An isogenic graft or isograft is a graft between genetically identical individuals (i.e. monozygotic twins). Typically, isografts are either grafts between animals of a single highly inbred strain, between the Fl hybrids produced by crossing inbred strains, or between identical twins. |
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| 1250. |
Which one of the following forms the base of vegetable fibres? |
| A. | Cellulose |
| B. | Proteins |
| C. | Fats |
| D. | Oils |
| Answer» A. Cellulose | |
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Explanation: The principal chemical component of vegetable fibers is cellulose, with varying amounts of lignin and hemicelluloses also usually present; thus, the fibers are also referred to as cellulosic or lignocellulosic. Examples include cotton, hemp, jute, flax, ramie, sisal, bagasse, and banana. Vegetable fibers are usually stiffer but less tough than synthetic fibers. |
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