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- Question 1 of 50
A universal recipient belongs to the blood group:
Blood types are determined by the presence or absence of certain antigens. There are 4 main blood groups – A, B, AB and O. Blood group is determined by the genes inherited from the parents. AB-positive blood type is known as the “universal recipient” because AB-positive patients can receive red blood cells from all blood types.
- Question 2 of 50
The vitamin that helps in blood clotting is:
Vitamin K is a group of vitamins that the body needs for blood clotting. Blood clotting or coagulation prevents excessive bleeding internally and externally.
- Question 3 of 50
Which of the following is a perfect match?
Atherosclerosis is a narrowing or blockage of artery walls usually caused by the buildup of fatty material called plaque. Coronary artery disease is a narrowing or blockage of coronary arteries. Hypertension, also known as low blood pressure, increases the risk of a heart attack. Hypotension (or low blood pressure) is a blood pressure under 90/60 mm/Hg.
- Question 4 of 50
Which of the following is correct about cold-blooded animals?
cold-blooded animals’ body temperature remains constant all the time. They cannot regulate their internal body temperature with the change in the environment. Animals, such as reptiles, fishes, and amphibians, cannot control their body temperature and therefore become sluggish in cold weather.
- Question 5 of 50
If the blood group of one parent is AB and that of the other O, the possible blood group of their child could be:
Each biological parent donates one of two ABO genes to their child. The A and B genes are dominant and the O gene is recessive. For example, if an O gene is paired with an A gene, the blood type will be A. Parents with AB and O blood types can either have children with blood type A or blood type B. Two O blood type parents can produce a child with only O blood type. Two parents with A blood type can produce a child with either A or O blood types.
- Question 6 of 50
How many bones are there in the human body?
The human skeleton of an adult consists of around 206 bones. There are typically around 270 bones in human infants, which fuse to become 206 to 213 bones in the human adult.
- Question 7 of 50
Dinosaurs were reptiles that became extinct. They are archosaurs, a larger group of reptiles that first appeared about 251 million years ago, near the start of the Triassic Period.
- Question 8 of 50
Sweat glands in mammals are primarily concerned with:
Sweat glands in mammals are primarily concerned with thermoregulation. Its main function is to control body temperature. As the water in the sweat evaporates, the surface of the skin cools.
- Question 9 of 50
The vitamin that helps to prevent infections in the human body is:
Vitamin C helps to prevent (viral and bacterial) infections in the human body. It contributes to collagen production, wound healing, and bone formation. It also strengthens blood vessels and supports the immune system.
- Question 10 of 50
The normal RBC count in an adult male is:
Men usually have a higher Red blood cell (RBC) count than women, and the level of red blood cells tends to decrease with age. The normal RBC count in an adult male is 4.7–6.1 million, an adult female is 4.2–5.4 million and newborns is 4.8–7.2 million.
- Question 11 of 50
Tetanus is caused by:
Tetanus is an infection caused by bacteria called Clostridium tetani. Spores of tetanus bacteria are everywhere in the environment, including soil, dust, and manure. The spores develop into bacteria when they enter the body.
- Question 12 of 50
Vitamin E is particularly important for:
Vitamin E is particularly important for the normal activity of sex glands as it improves blood flow and oxygen to sexual organs. It is an antioxidant that helps to maintain healthy skin, eyes and hormonal balance. It also enhances immune function and prevents clots from forming in heart arteries.
- Question 13 of 50
Birds usually have a single:
Birds have only one functional ovary, typically on the left side of the body.
- Question 14 of 50
Blood pressure is controlled by:
Blood pressure is controlled by Adrenal gland. Adrenal glands produce hormones that help regulate metabolism, immune system, blood pressure, response to stress and other essential functions. Adrenal glands are composed of two parts — the cortex and the medulla — which are each responsible for producing different hormones.
- Question 15 of 50
The carbon dioxide content in the air that we exhale is about:
The typical composition of exhaled air is about 18 percent O2, 78 percent N2, and 4 percent CO2.
- Question 16 of 50
Maximum harm to a tree is caused by:
Maximum harm to a tree is caused by the loss of all leaves because leaves produce food through the process of photosynthesis. The plant can survive without leaves for few days as the stored food in roots and stems helps to execute all the food requirements of that plant. If a plant loses its leaves, it will usually generate new ones.
- Question 17 of 50
The mineral constituent of chlorophyll is:
The mineral constituent of chlorophyll is Magnesium (Mg). The chlorophyll molecule consists of a central magnesium atom surrounded by a nitrogen-containing structure called a porphyrin ring; attached to the ring is a long carbon-hydrogen side chain, known as a phytol chain. Other elements (not minerals) like carbon, nitrogen, oxygen and hydrogen are also present in chlorophyll.
- Question 18 of 50
Which part of the tongue bears cells for sour taste?
Taste buds are small cells on the tongue that allow to recognize the flavours of food and drink. The tip of the tongue contains the ‘sweet’ taste buds while the ‘bitter’ taste buds are present in the back. Either side of the front tongue contains ‘salt’ taste buds while the ‘sour’ taste buds are present behind this.
- Question 19 of 50
The deficiency of Vitamin-B causes:
Beri-Beri is a disease caused by a vitamin B1 deficiency, also known as thiamine deficiency. The body needs thiamin to break down and digest the foods, keep the metabolism going, and help muscles and the nervous system do their jobs effectively.
- Question 20 of 50
In which vertebrate oxygenated and deoxygenated blood gets mixed?
Amphibians can endure certain measures of mixing of oxygenated and deoxygenated blood since they don’t need a lot of energy.
- Question 21 of 50
The largest amount of sugar present in human blood is:
The largest amount of sugar present in human blood is glucose. It is an important source of energy and provides nutrients to the body. It comes from food eaten. Blood carries glucose to all of the body’s cells to use for energy.
- Question 22 of 50
Which one of the following is a viral disease in humans?
Mumps is an infectious disease caused by the mumps virus, which belongs to a family of viruses known as paramyxoviruses. Plague is an infectious disease caused by the bacterium Yersinia pestis. Cholera is an acute diarrheal illness caused by infection of the intestine with Vibrio cholerae bacteria. The cause of syphilis is a bacterium called Treponema pallidum.
- Question 23 of 50
Among the defects of eye, the shortsightedness is called:
Myopia, also known as shortsightedness or nearsightedness, is a very common vision disorder. It is the inability to see distant objects clearly unless they are relatively close to your eyes. This causes light to focus in front of the retina instead of directly on it.
- Question 24 of 50
Which one of the following wavelengths of light is most effective in photosynthesis?
The best wavelengths of visible light for photosynthesis fall within the blue range (425–450 nm) and red range (600–700 nm). Therefore, the best light sources for photosynthesis should ideally emit light in the blue and red ranges. Green light is the least effective in photosynthesis.
- Question 25 of 50
Which of the following is a viral disease?
Hepatitis is a viral disease caused by hepatitis viruses A, B, C, D, and E. It infects liver cells and causes inflammation.
- Question 26 of 50
Vegetables are easily perishable because of their high content of:
Perishable foods are those likely to spoil, decay or become unsafe to consume. Vegetables are easily perishable because of their high content of water for the growth of microorganisms and moderate pH range which is suitable for the growth of mesophilic microorganism (which grows in a moderate temperature range).
- Question 27 of 50
Anemia occurs due to the deficiency of:
Anemia occurs due to the deficiency of folate (folic acid or vitamins B9). Iron deficiency anemia is the most common type of anemia caused by a shortage of iron in the body. Vitamin deficiency anemia is a lack of healthy red blood cells caused by lower than usual amounts of vitamin-B12 and folate.
- Question 28 of 50
For a healthy heart, one needs to take a balanced diet, adequate sleep and:
Physical exercise is one of the most effective tools for strengthening the heart muscle, keeping weight under control and warding off the artery damage from high cholesterol, high blood sugar and high blood pressure that can lead to heart attack or stroke.
- Question 29 of 50
AIDS is a/an:
AIDS is a viral disease caused by Human immunodeficiency virus (HIV). When a person becomes infected with HIV, the virus attacks and weakens the immune system. As the immune system weakens, the person is at risk of getting life-threatening infections.
- Question 30 of 50
Amoebic dysentery is caused by:
Amebiasis is an intestinal (bowel) illness caused by a microscopic (tiny) parasite called Entamoeba histolytica, which is spread through human feces (poop).
- Question 31 of 50
An ECG shows the functioning of the:
An ECG (Electrocardiography) shows the functioning of the heart. It is the process of producing an electrocardiogram, a recording of the heart’s electrical activity. ECG is a graph of voltage versus time of the electrical activity of the heart using electrodes placed on the skin.
- Question 32 of 50
Which of the following is not correct?
Ano-Genital Warts (AGW) is usually a sexually transmitted disease (STD) which is caused by HPV (human papilloma virus). HIV infection and AIDS is a spectrum of conditions caused by infection with HIV, a retrovirus. AIDS was first recognized by the United States Centers for Disease Control and Prevention (CDC) in 1981 and its cause—HIV infection—was identified in the early part of the decade.
- Question 33 of 50
If the radius of blood vessels of a person decreases his/her blood pressure will:
When the radius of blood vessels decreases, their capacity to hold blood is reduced, allowing more blood to return to the heart from which it is pumped into the arteries. As a result, blood pressure increases.
- Question 34 of 50
Cell or tissue death within a living body is called as:
Necrosis is cell or tissue death within a living body. It is a form of cell injury which results in the premature death of cells in living tissue by autolysis.
- Question 35 of 50
Insufficient blood supply in human body is referred as:
Ischemia is insufficient blood supply in the human body. It is a restriction in blood supply to tissues, causing a shortage of oxygen that is needed for cellular metabolism (to keep tissue alive).
- Question 36 of 50
Deep-fried food materials are carcinogenic because they are rich in:
Deep-fried food materials are carcinogenic because they are rich in Polycyclic aromatic hydrocarbons (PAHs). PAHs are made whenever substances are burned. They may cause cancer and may affect the eyes, kidneys, and liver.
- Question 37 of 50
The toxicity of which of the following heavy metals leads to liver cirrhosis?
Cirrhosis is usually a result of liver damage from conditions such as hepatitis B or C, or chronic alcohol use. Heavy metals like copper may exacerbate liver damage. The toxicity of copper can result in brain damage, liver failure, or death if it is not treated.
- Question 38 of 50
Typhoid is caused by:
Typhoid is caused by a type of bacteria called Salmonella typhi, which is related to the bacteria that cause salmonella food poisoning.
- Question 39 of 50
BCG immunization is for:
BCG (Bacille Calmette-Guerin) is a vaccine for tuberculosis (also known as TB) disease. TB is a serious infection that affects the lungs and sometimes other parts of the body, such as the brain (meningitis), bones, joints and kidneys.
- Question 40 of 50
Besides carbohydrates, a major source of energy in our food is constituted by:
Besides carbohydrates, a major source of energy in our food is constituted by Fats. Fat has more than twice as many calories per gram as carbohydrates and proteins. A gram of fat has about 9 calories, while a gram of carbohydrate or protein has about 4 calories.
- Question 41 of 50
The limb bones of children become bent if there is deficiency of:
Due to Vitamin D deficiency, the limb bones of children become bent. Vitamin D deficiency can cause children to get rickets. Rickets is a disease that causes thin, weak and deformed bones. In adults, not having enough vitamin D and calcium causes osteoporosis (loss of bone density) and can lead to fractures.
- Question 42 of 50
A medicine which promotes the secretion of urine is called:
A diuretic, also called water pill, is a medicine which promotes the secretion of urine. It is a medication designed to increase the amount of water and salt expelled from the body as urine.
- Question 43 of 50
The chemicals released by one species of animals in order to attract the other members of the same species are:
Pheromones are chemicals released by one species of animals in order to attract the other members of the same species. They are capable of acting like hormones outside the body of the secreting individual, to affect the behavior of the receiving individuals.
- Question 44 of 50
Jaundice is caused due to the infection of:
Jaundice is caused due to infection of the liver. It happens when there’s too much bilirubin, a yellow-orange substance, in your blood. Jaundice may occur if the liver can’t efficiently process red blood cells as they break down.
- Question 45 of 50
The average heartbeat rate per minute in a normal person is:
The average heartbeat rate per minute in a normal person is 72. A normal resting heart rate for adults ranges from 60 to 100 beats per minute. Generally, a lower heart rate at rest implies more efficient heart function and better cardiovascular fitness.
- Question 46 of 50
The colour of cows milk is slightly yellow due to the presence of:
Due to the presence of Carotene, a fat-soluble pigment, the colour of cows milk is slightly yellow. β-Carotene is a secondary source of vitamin A, considered a precursor, and is usually present in milk.
- Question 47 of 50
Which one of these is a communicable disease?
Diphtheria is a highly contagious, infectious disease caused by the bacteria Corynebacterium diphtheriae. It is a serious bacterial infection that usually affects the mucous membranes of the nose and throat.
- Question 48 of 50
The concentration of which of the following decreases in anemia?
The concentration of hemoglobin in blood is decreased in anemia. Hemoglobin is a protein in red blood cells that carries oxygen to the body’s organs and tissues and transports carbon dioxide from your organs and tissues back to your lungs. If a hemoglobin level is lower than normal, it means a low red blood cell count (anemia).
- Question 49 of 50
Which of the following diseases usually spreads through air?
Tuberculosis (TB) is caused by a bacteria called Mycobacterium tuberculosis. TB bacteria spread through the air from one person to another. When a person with TB disease of the lungs or throat coughs or speaks, TB bacteria can get into the air. People nearby may breathe in these bacteria and become infected.
- Question 50 of 50
Cereals are a rich source of:
Carbohydrates can be divided into three main categories: sugar, fiber and starch. Starches are the most commonly consumed type of carbohydrate. Cereal grains and root vegetables are a rich source of starches.