McqMate
These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: General Knowledge (GK) .
| 751. |
IUCN categorized major threatened species under : |
| A. | seven classes |
| B. | five classes |
| C. | six classes |
| D. | Eight classes |
| Answer» D. Eight classes | |
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Explanation: At present, the IUCN Red List of Threatened Species (also known as the Red Data List) lists eight classes of organism under the group of "threatened categories" of endangered; critically endangered, The classes of organism for which the 'threatened' tag is applied are: mammals; birds; reptiles; amphibians; fishes; insects; mollusks; and plants. |
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| 752. |
Minamata disease was caused by: |
| A. | Mercury |
| B. | Lead |
| C. | Cadmium |
| D. | Zinc |
| Answer» A. Mercury | |
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Explanation: Minamata disease is a neurological syndrome caused by severe mercury poisoning. Symptoms include ataxia, numbness in the hands and feet, general muscle weakness, narrowing of the field of vision and damage to hearing and speech. It was first discovered in Minamata city in Kumamoto prefecture, Japan, in 1956. |
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| 753. |
Chromosomes are made up of – |
| A. | DNA |
| B. | Protein |
| C. | DNA and Protein |
| D. | RNA |
| Answer» C. DNA and Protein | |
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Explanation: Each chromosome is made up of DNA tightly coiled many times around proteins called his tones that support its structure. |
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| 754. |
Which one of the following is an insectivorous plant? |
| A. | Passion flower plant |
| B. | Pitcher plant |
| C. | Night queen |
| D. | Flame of the forest |
| Answer» B. Pitcher plant | |
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Explanation: Pitcher plants can get pretty big, some get big enough to eat mice, rats, small animals, and yes, frogs. Most carnivorous plants are not dangerous to humans, but there are are rumors of large species of Nepenthes accidentally eating mice or frogs. |
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| 755. |
The chemical which is used in art and craft and can cause anemia and leukemia is - |
| A. | Benzene |
| B. | Dioxine |
| C. | Phthalate |
| D. | Aldrin |
| Answer» A. Benzene | |
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Explanation: Benzene is an organic chemical compound sometimes known as benzol which is carcinogenic. Substantial quantities of epidemiologic, clinical, and laboratory data link benzene to aplastic anemia, acute leukemia, and bone marrow abnormalities. One of its forms, Ethylbenzene, is used in Paints (Arts and Craft and Interior/Exterior Building) |
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| 756. |
Total number of muscles present in our body is – |
| A. | 565 |
| B. | 656 |
| C. | 665 |
| D. | 556 |
| Answer» B. 656 | |
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Explanation: The number of muscles in the human body varies from about 656 to 850 (sometimes from 639 to around 800). An exactnumber is difficult to define. The difficulty lies partly in the fact that different sources group the muscles differently and partly in that some muscles, such as palmaris longus, are not always present. |
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| 757. |
Biogradable wastes can usually be converted into useful substances with the help of: |
| A. | nuclear proteins |
| B. | radio-active substances |
| C. | viruses |
| D. | bacteria |
| Answer» D. bacteria | |
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Explanation: Bacteria can convert biodegradable wastes into useful substances. |
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| 758. |
An ant can see the objects all around it due to the presence of – |
| A. | Eyes over the head |
| B. | Well developed eyes |
| C. | Compound eyes |
| D. | Simple eyes |
| Answer» C. Compound eyes | |
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Explanation: An ant has compound eye. |
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| 759. |
Which one of the following plant is used to treat blood pressure? |
| A. | Sarpagandha |
| B. | Neem |
| C. | Babool |
| D. | Tulsi |
| Answer» A. Sarpagandha | |
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Explanation: Sarpagandha plant is used to treat blood pressure. |
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| 760. |
BCG vaccination is given at the age of |
| A. | 2-3 years |
| B. | 10 years |
| C. | Newborn |
| D. | Within 15 days |
| Answer» D. Within 15 days | |
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Explanation: Bacillus Calmette Guerin is a vaccine against tuberculosis. BCG vaccine can be implemented after the birth intradermally within 15 days. |
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| 761. |
The Rotavirus vaccine ROTOVAC developed by Indian scientists cures which disease? |
| A. | Diarrohea |
| B. | Cancer |
| C. | Diabetes |
| D. | Arthritis |
| Answer» A. Diarrohea | |
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Explanation: Rotavirus vaccine is a vaccine used to protect against rotavirus infections, which are the leading cause of severe diarrhea among young children. |
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| 762. |
Which base in place of thymine is present in RNA? |
| A. | Adenine |
| B. | Guanine |
| C. | Uracil |
| D. | Cytosine |
| Answer» C. Uracil | |
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Explanation: DNA (Deoxyribonucleic acid) contains 2-cleoxy-ribose sugar. It contains cytosine and thymine as pyrimidine bases and guanine and adenine as purine bases. RNA (Ribonucleic acid) contains ribose sugar. It contains cytosine and uracil as pyrimidine bases and guanine and adenine as purine bases. |
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| 763. |
Pick out the correct match: |
| A. | Fleshy foods-Calcium and Protein |
| B. | Fish - Starch and Vitamin |
| C. | Milk Fibre and Minerals |
| D. | Egg yolk Protein and Fat |
| Answer» D. Egg yolk Protein and Fat | |
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Explanation: An egg yolk is a part of an egg which feeds the developing embryo. As a food,yolks are a major source of vitamins and minerals. They contain all of the egg's fat and cholesterol, and about one-half of the protein. |
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| 764. |
Respiration is regarded as a – |
| A. | Synthetic Process |
| B. | Catabolic Process |
| C. | Anabolic Process |
| D. | Reduction Process |
| Answer» B. Catabolic Process | |
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Explanation: Cellular respiration is a catabolic process because it is breaking down glucose to eventually transfer energy into its usable form in ATP. An anabolic process builds things up, photosynthesis is a version of this and the metabolic opposite of cellular respiration. |
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| 765. |
The structure which helps in the nutrition of the Embryo is – |
| A. | Yolk sac |
| B. | Amniotic membrane |
| C. | Crypts |
| D. | Placenta |
| Answer» A. Yolk sac | |
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Explanation: The yolk sac is a membranous sac attached to an embryo, providing early nourishment. It functions as the developmental circulatory system of the human embryo, before internal circulation begins. It carries out transfer of nutrients in weeks 2 and 3 when the uteroplacental circulation is established |
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| 766. |
Which one of the following parts of the human brain is the regulating centre for swallowing and vomiting? |
| A. | Cerebellum |
| B. | Cerebrum |
| C. | Medulla Oblongata |
| D. | Pons |
| Answer» C. Medulla Oblongata | |
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Explanation: Medulla Oblongata is that part of the brain which regulates basic functions. It regulates vomiting, hiccupping, swallowing, coughing, sneezing, etc. |
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| 767. |
Which one of the following animals is devoid of lateral line sense organ? |
| A. | Labeo |
| B. | Catla |
| C. | Sea horse |
| D. | Magur |
| Answer» C. Sea horse | |
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Explanation: The lateral line is a system of sense organs found in aquatic vertebrates, chiefly fish, used to detect movement and vibration in the surrounding water. Sea Horses do not have such organ. |
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| 768. |
Hypothermia occurs due to loss of excessive heat from body due to sudden low body temperature in: |
| A. | Frogs |
| B. | Human beings |
| C. | Lizards |
| D. | Snakes |
| Answer» B. Human beings | |
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Explanation: Normal human body temperature in adults is 34.4-37.8 °C. Sometimes a narrower range is stated, such as 36.5-37.5 °C. Hypothermia is defined as any body temperature below 35.0 °C. |
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| 769. |
The disease that has been eradicated from the world is: |
| A. | Leprosy |
| B. | Poliomyelitis |
| C. | Chicken pox |
| D. | Small pox |
| Answer» D. Small pox | |
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Explanation: Eight attempts have been made to date to eradicate infectious diseases. Two successful programs targeted smallpox and rinderpest. The last naturally occurring case of smallpox (Variola minor) was diagnosed on 26 October, 1977. |
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| 770. |
Protein part of enzyme is know as – |
| A. | Isoenzyme |
| B. | Holoenzyme |
| C. | Apoenzyme |
| D. | All the above |
| Answer» C. Apoenzyme | |
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Explanation: Enzymes are defined as biological catalysts. Chemically all enzymes are globular proteins. Each enzyme catalyses only one chemical reaction. Protein part of enzyme is known as Apoenzyme. |
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| 771. |
Time required for the organism to eliminate 50% the total body burden or tissue concentration of chemical is referred as – |
| A. | Threshold limit time |
| B. | Halftime life |
| C. | Residual-period |
| D. | Half-life period |
| Answer» D. Half-life period | |
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Explanation: Time required for the organism to eliminate 50 per cent of the total body burden or tissue concentration of chemical is referred to as Half Life Period. |
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| 772. |
The sum of genes in a population is called – |
| A. | Phenotype |
| B. | Karyotype |
| C. | Genotype |
| D. | Gene pool |
| Answer» D. Gene pool | |
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Explanation: Phenotype refers to a set of observable characteristics of an individual or group resulting from the interaction of its genotype with its environment. Gene pool refers to the stock of different genes in an interbreeding population. |
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| 773. |
'Plague' is caused by . |
| A. | Bacteria |
| B. | Protozoa |
| C. | Virus |
| D. | All of the above |
| Answer» A. Bacteria | |
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Explanation: Plague is caused by Bacteria. It is a deadly infectious disease caused by the enterobacteria yersinia pestis, named after the French- Swiss bacteriologist Alexander Yersin. |
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| 774. |
Growing more than one crop on a piece of land during the year is known as – |
| A. | Uni cropping |
| B. | Multiple cropping |
| C. | Double cropping |
| D. | niple cropping |
| Answer» B. Multiple cropping | |
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Explanation: Growing more than one crop on a piece of land during the year is known as Multiple Cropping. |
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| 775. |
Immunisation is a phenomenon of formation of antibodies by using inactive - |
| A. | Antigens |
| B. | Antibodies |
| C. | Chemicals |
| D. | Blood |
| Answer» A. Antigens | |
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Explanation: Whenever an antigen enters the blood, it binds itself with a special kind of white blood cell called lymphocyte. Each Lymphocyte produces only one kind of antibody. |
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| 776. |
Which one of the following is an indicator of air pollution? |
| A. | Cycas |
| B. | Algae |
| C. | Bryophytes |
| D. | Lichens |
| Answer» D. Lichens | |
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Explanation: Lichens are an indicator of air pollution. |
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| 777. |
Symptoms of Jaundice occur mainly due to disorder and malfunction of - |
| A. | Intestine |
| B. | Liver |
| C. | Stomach |
| D. | Pancreas |
| Answer» B. Liver | |
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Explanation: Liver is affected in Jaundice. |
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| 778. |
Which of the plant products is used in leather industry? |
| A. | Resin |
| B. | Mucilage |
| C. | Latex |
| D. | Tannin |
| Answer» D. Tannin | |
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Explanation: A tannin is an astringent, bitter plant polyphenolic compound that binds to and precipitates proteins and various other organic compounds including amino acids and alkaloids. It refers to the use of wood tannins from oak in tanning animal hides into leather; hence the words "tan" and "tanning" for the treatment of leather. Oak bark, mimosa, chestnut and quebracho tree have traditionally been the primary source of tannery tannin, though inorganic tanning agents are also in use today and account for 90% of the world's leather production |
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| 779. |
Cooking oil can be converted into vegetable ghee by the process of – |
| A. | oxidation |
| B. | hydrogenation |
| C. | distillation |
| D. | crystalisation |
| Answer» B. hydrogenation | |
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Explanation: An example of an alkene addition reaction is a process called hydrogenation. In a hydrogenation reaction, two hydrogen atoms are added across the double bond of an alkene, resulting in a saturated alkane. |
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| 780. |
Which of the following is a good source of Vitamin 'E'? |
| A. | Me |
| B. | Ghee |
| C. | Yellow Yolk |
| D. | Fresh Vegetables |
| Answer» D. Fresh Vegetables | |
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Explanation: Vitamin E refers to a group of eight fat-soluble compounds that include both tocopherols and tocotrienols. Numerous foods provide vitamin E. Nuts, seeds, and vegetable oils are among the best sources of alpha- tocopherol, and significant amounts are available in green leafy vegetables and fortified cereals. |
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| 781. |
Penicillinis isolated from : |
| A. | Fungi |
| B. | Algae |
| C. | Virus |
| D. | Bacteria |
| Answer» A. Fungi | |
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Explanation: Penicillin is one of the first and still one of the most widely used antibiotic agents - derived from the Penicillium mold (fungi). Penicillin kills bacteria by interfering with the ability to synthesize cell wall. |
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| 782. |
Insulin for Diabetes is invented by |
| A. | Edward Jenner |
| B. | Alexander Fleming |
| C. | E.F. Banting |
| D. | Hoffiman |
| Answer» C. E.F. Banting | |
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Explanation: First use of insulin in treatment of diabetes on this day in 1922. On 11 January 1922 insulin was first used in the treatment of diabetes Insulin was discovered by Sir Frederick G Banting. |
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| 783. |
What is the term used for the process of pollination by birds? |
| A. | Embryophily |
| B. | Ornithophily |
| C. | Entomophily |
| D. | Hydrophily |
| Answer» B. Ornithophily | |
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Explanation: Ornithophily or bird pollination is the pollination of flowering plants by birds. |
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| 784. |
The trace metal present in insulin is – |
| A. | iron |
| B. | zinc |
| C. | cobalt |
| D. | manganese |
| Answer» B. zinc | |
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Explanation: Trace elements play important role in Insulin metabolism. The relationship between diabetes, insulin and zinc (Zn) is complex with no clear cause and effect relationships. Several of the complications of diabetes may be related to increased intracellular oxidants and free radicals associated with decreases in intracellular Zn and in Zn dependent antioxidant enzymes. |
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| 785. |
Male mosquitoes - |
| A. | Suck blood |
| B. | Feed on plant juices |
| C. | Spread encephalitis |
| D. | Spread malaria |
| Answer» B. Feed on plant juices | |
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Explanation: Typically, both male and female mosquitoes feed on nectar and plant juices, butin many species the mouthparts of the females are adapted for piercing the skin of animal hosts and sucking their blood as ectoparasites. |
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| 786. |
Where is the Pineal Gland situated? |
| A. | in the Liver |
| B. | in the Brain |
| C. | in the Kidneys |
| D. | in the Uterus |
| Answer» B. in the Brain | |
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Explanation: The pineal gland is a small endocrine gland in the vertebrate brain. It produces the serotonin derivative melatonin, a hormone that affects the modulation of wake/sleep patterns and, seasonal functions. Its shape resembles a tiny pine cone (hence its name), and it is located near the centre of the brain. |
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| 787. |
Which of the following cells secrete insulin? |
| A. | Alpha cells |
| B. | Delta cells |
| C. | Nerve cells |
| D. | Beta cells |
| Answer» D. Beta cells | |
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Explanation: Insulin is a hormone that is exclusively produced by pancreatic beta cells. Beta cells are located in the pancreas in clusters known as the islets of Langerhans. When the beta cell is appropriately stimulated, insulin is secreted from the cell by exocytosis and diffuses into islet capillary blood. |
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| 788. |
In the human body, fats are stored in the – |
| A. | Epidermis |
| B. | Adipose tissue |
| C. | Liver |
| D. | Epithelium |
| Answer» B. Adipose tissue | |
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Explanation: Adipose tissue is also known as body fat. It contains several cell types, with the 11.` hest percentage of cells being adipocytes,which contain fat droplets. Its main function is to be a reserve of lipids, which can be burned to meet the energy needs of the body and to protect us from excess glucose by storing triglycerides produced by the liver from sugars. |
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| 789. |
Blood pressure is measured with: |
| A. | Thermometer |
| B. | Barometer |
| C. | Sphygmomanometer |
| D. | Lactometer |
| Answer» C. Sphygmomanometer | |
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Explanation: A sphygmomanometer, also known as a blood pressure meter, blood pressure monitor, or blood pressure gauge, is a device used to measure blood pressure. |
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| 790. |
The reagent used to test the presence of starch in leaves is – |
| A. | Fehling's solution |
| B. | Iodine solution |
| C. | Million's reagent |
| D. | Benedict's solution |
| Answer» B. Iodine solution | |
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Explanation: The Iodine test is used to test for the presence of starch. Iodine solution — iodine dissolved in an aqueous solution of potassium iodide — reacts with the starch producing a purple black color. |
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| 791. |
Malaria can be cured with a drug extracted from |
| A. | Belladonna tree |
| B. | Cinchona tree |
| C. | Oak tree |
| D. | Neem tree |
| Answer» B. Cinchona tree | |
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Explanation: Quinine, as a component of the bark of the cinchona tree, was used to treat malaria from as early as the 1600s. The bark of trees in this genus is the source of a variety of alkaloids, the most familiar of which is quinine, an antipyretic (anti-fever) agent. |
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| 792. |
Blood does not clot in the blood vessels due to the presence of – |
| A. | Thrombin |
| B. | Fibrinogen |
| C. | Heparin |
| D. | Prothrombin |
| Answer» C. Heparin | |
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Explanation: There are two major facets of the clotting mechanism — the platelets, and the thrombin system. The thrombin system consists of several blood proteins that, when bleeding occurs, become activated. |
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| 793. |
The substance used to bring down body temperature in high fever, is – |
| A. | Tranquilisers |
| B. | Antipyretics |
| C. | Analgesics |
| D. | Antibiotics |
| Answer» B. Antipyretics | |
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Explanation: Antipyretics are drubs or herbs that reduce fever. They cause the hypothalamus to override an interieukin-induced increase in temperature. The body then works to lower the temperature, resulting in a reduction in fever. |
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| 794. |
Which of these produces energy? |
| A. | Carbohydrates |
| B. | Proteins |
| C. | Vitamins |
| D. | Mineral salts |
| Answer» A. Carbohydrates | |
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Explanation: General names for carbohydrates include sugars, starches, saccharide, and polysaccharides. They store energy in the form of starch (photosynthesis in plants) or glycogen (in animals and humans) and provide energy through metabolism pathways and cycles. Metabolism and combustion convert chemical energy into other forms of energy such as heat. |
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| 795. |
Which of the following metals is present in chlorophyll? |
| A. | Beryllium |
| B. | Magnesium |
| C. | Calcium |
| D. | Barium |
| Answer» B. Magnesium | |
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Explanation: Chlorophyll is a chlorin pigment, which is structurally similar to and produced through the same metabolic pathway as other porphyrin pigments such as heme. At the center of the chlorin ring is a magnesium ion. |
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| 796. |
What vessel carries the venous blood to the lungs for oxygenation? |
| A. | Pulmonary arteries |
| B. | Pulmonary veins |
| C. | Pulmonary arteriovenous shunt |
| D. | Right ventricle |
| Answer» A. Pulmonary arteries | |
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Explanation: Pulmonary arteries carry venous blood from the right ventricle of the heart to the lungs. They carry deoxygenated blood to the lungs, where it releases carbon dioxide and pick up oxygen during respiration. |
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| 797. |
The main thinking part of the brain is – |
| A. | midbrain |
| B. | hypothalamus |
| C. | forebrain |
| D. | hindbrain |
| Answer» C. forebrain | |
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Explanation: The main thinking part of the brain is Forebrain is the anterior part of the brain, including the cerebral hemispheres, the thalamus, and the hypothalamus. |
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| 798. |
Enzymes are – |
| A. | Micro organisms |
| B. | Proteins |
| C. | Inorganic compounds |
| D. | Moulds |
| Answer» B. Proteins | |
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Explanation: Enzymes are proteins that act as a catalyst, lowering the activation energy of a reaction, therefore dramatically increasing the rate of the reaction. Like all proteins, enzymes are long, linear chains of amino acids that fold to produce a three-dimensional product which determines their specific activities. |
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| 799. |
The total number of bones in the human body is : |
| A. | 206 |
| B. | 260 |
| C. | 306 |
| D. | 360 |
| Answer» A. 206 | |
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Explanation: At birth there are over 270 bones in an infant human's body, but many of these fuse together as the child grows, leaving a total of 206 separate bones in an adult. The largest bone in the human body is the femur and the smallest bones are auditory ossicles. |
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| 800. |
Bile is secreted by : |
| A. | Gall bladder |
| B. | Liver |
| C. | Bile duct |
| D. | Pancreas |
| Answer» B. Liver | |
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Explanation: Bile is a bitter-tasting, dark green to yellowish brown fluid, produced by the liver that aids the process of digestion of lipids in the small intestine. |
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