McqMate
These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: General Knowledge (GK) .
| 151. |
The presence of what distinguishes a plant cell from an animal cell’? |
| A. | Chloroplasts |
| B. | Cell wall |
| C. | Cell membrane |
| D. | Nucleus |
| Answer» A. Chloroplasts | |
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Explanation: Plant and animal cells have several differences and similarities. Animal cells do not have chloroplasts but plant cells do. Animal cells are round and irregular in shape while plant cells have fixed, rectangular shapes. Chloroplasts are organelles found in plant cells and other eukaryotic organisms that conduct photosynthesis and other chemical reactions. Chloroplasts capture the sun's light energy, store it in the energy storage molecules ATP and NADPH and use it in the process called photosynthesis to make organic molecules from carbon dioxide and free oxygen from water. |
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| 152. |
What is the number of chromosomes in a normal human body cell? |
| A. | 43 |
| B. | 44 |
| C. | 45 |
| D. | 46 |
| Answer» D. 46 | |
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Explanation: A chromosome is an organized structure of DNA and protein found in cells. It is a single piece of coiled DNA containing many genes, regulatory elements and other nucleotide sequences. Chromosomes also contain DNA- bound proteins, which serve to package the DNA and control its functions. Human cells have 23 Pairs of chromosomes (22 pairs of autosomes and one pair of sex chromosomes), giving a total of 46 per cell. |
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| 153. |
Xerophthalmia is a deficiency disease caused by lack of - |
| A. | Vitamin A |
| B. | Vitamin B |
| C. | Vitamin C |
| D. | Vitamin D |
| Answer» A. Vitamin A | |
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Explanation: Xerophthalmia is a medical condition in which the eye fails to produce tears. It may be caused by a deficiency in vitamin A and is sometimes used to describe that lack, although there may be other causes. Xerophthalmia caused by a severe vitamin A deficiency is described by pathologic dryness of the conjunctiva and cornea. The conjunctiva becomes dry, thick and wrinkled. If untreated, it can lead to corneal ulceration and ultimately to blindness as a result of corneal damage. |
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| 154. |
An ant can see the objects all around it due to the presence of – |
| A. | Simple Eyes |
| B. | Eyes over the head |
| C. | Well-developed eyes |
| D. | Compound eyes |
| Answer» D. Compound eyes | |
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Explanation: Compound eyes are found among the arthropods and are composed of many simple facets which, depending on the details of anatomy, may give either a single pixilated image or multiple images, per eye. Each sensor has its own lens and photosensitive cell(s). Some eyes have up to 28,000 such sensors, which are arranged hexagonally, and which can give a full 360° field of vision. Compound eyes are very sensitive to motion. With each eye viewing a different thing, a fused image from all the eyes is produced in the brain, providing very different, high-resolution images. |
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| 155. |
Which among the following does not have a cell wall? |
| A. | Euglena |
| B. | Paramecium |
| C. | Gonyaulax |
| D. | Mycoplasma |
| Answer» D. Mycoplasma | |
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Explanation: Mycoplasma is a genus of bacteria that lacks a cell wall around their cell membrane Without a cell wall, they are unaffected by many common antibiotics such as penicillin or other beta-lactam antibiotics that target cell wall synthesis. |
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| 156. |
Hemophilia is – |
| A. | caused by bacteria |
| B. | caused by virus |
| C. | caused by pollutants |
| D. | a hereditary defect |
| Answer» D. a hereditary defect | |
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Explanation: Hemophilia is a rare disorder in which your blood doesn't clot normally because it lacks sufficient bloodclotting proteins (clotting factors). |
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| 157. |
Jonas Salk invented the vaccine for - |
| A. | Polio |
| B. | Hepatitis |
| C. | Typhoid |
| D. | Cholera |
| Answer» A. Polio | |
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Explanation: Jonas Edward Salk was an American medical researcher and virologist, best known for his discovery and development of the first polio vaccine. The field trial set up to test the vaccine developed by Salk and his research team was the most elaborate program of its kind in history, involving 20,000 physicians and public health officers, 64,000 school personnel, and 220,000 volunteers," with over 1,800,000 school children participating in the trial. On April 12, 1955, Dr. Thomas Francis, Jr., of the University of Michigan, the monitor of the test results, "declared the vaccine to be safe and effective." |
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| 158. |
Cancer is a disease where we find uncontrolled - |
| A. | cell division |
| B. | cell swelling |
| C. | cell inflammation |
| D. | cell deformity |
| Answer» A. cell division | |
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Explanation: Cancer is the uncontrolled growth of abnormal cells in the body. Cancerous cells are also called malignant cells. Symptoms of cancer depend on the type and location of the cancer. Cancer grows out of normal cells in the body. Normal cells multiply when the body needs them, and die when the body doesn't need them. Cancer appears to occur when the growth of cells in the body is out of control and cells divide too quickly. It can also occur when cells forget how to die. The most common cause of cancer-related death is lung cancer. |
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| 159. |
Which among the following carries impure blood to human heart? |
| A. | Aorta |
| B. | Pulmonary vein |
| C. | Pulmonary arteries |
| D. | Vena Cava |
| Answer» C. Pulmonary arteries | |
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Explanation: A pulmonary artery is an artery in the pulmonary circulation that carriesdeoxygenated blood from the right side of the heart to the lungs. |
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| 160. |
In human beings, the digestion of proteins starts in which part of the alimentary canal? |
| A. | Mouth |
| B. | Stomach |
| C. | Doudenum |
| D. | Ileum |
| Answer» B. Stomach | |
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Explanation: The stomach secretes acid and enzymes that digest food. Ridges of muscle tissue called rugae line the stomach. |
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| 161. |
Jaundice is a symptom of disease of - |
| A. | Kidney |
| B. | Liver |
| C. | Pancreas |
| D. | Thyroid |
| Answer» B. Liver | |
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Explanation: Jaundice is a yellowish pigmentation of the skin, the conjunctival membranes over the sclerae (whites of the eyes), and other mucous membranes caused by hyperbilirubinemia (increased levels of bilirubin in the blood). This hyperbilirubinemia subsequently causes increased levels of bilirubin in the extracellular fluid. Concentration of bilirubin in blood plasma does not normally exceed 1 mgiclI, (>17pmol/L). concentration higher than 1.8 mg/dI, (>30prnol/L) leads to jaundice. |
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| 162. |
The vaccination against small pox involves the introditetion of - |
| A. | killed germs |
| B. | weakened germs |
| C. | live antibodies |
| D. | activated germs |
| Answer» B. weakened germs | |
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Explanation: The smallpox vaccine was the first successful vaccine to be developed. The process of vaccination was first publicized byEdward Jenner in 1796, who acted upon his observation that milkmaids who caught the cowpox virus did not catch smallpox. The vaccine consists of the virus which causes the related, yet far milder, cowpox disease; this virus is named vaecinia (the term vaccine is derived from it), from the Latin vacca which means cow. This vaccine has functional viruses in it. Vaccines generally consist of a weakened (attenuated) or killed antigens, associated with a particular disease that are capable of stimulating the body to make specific antibodies to that disease. |
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| 163. |
Haemophilia is a genetic disorder which lead to – |
| A. | decrease in haemoglobin level |
| B. | rheumatic heart disease |
| C. | decrease in WBC |
| D. | non-clotting of blood |
| Answer» D. non-clotting of blood | |
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Explanation: Haemophilia is a mostly inherited genetic disorder that impairs the body's ability to make blood clots, a process needed to stop bleeding. |
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| 164. |
'Mangifera indica' is the phylum of – |
| A. | Guava |
| B. | Mango |
| C. | Amla |
| D. | Jack fruit |
| Answer» B. Mango | |
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Explanation: Mangifera indica is commonly known as mango. If is found in the wild in Bangladesh. |
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| 165. |
Typhoid is caused by - |
| A. | Pseudomonas sp. |
| B. | Staphylococcus |
| C. | Bacillus |
| D. | Salmonella typhi |
| Answer» D. Salmonella typhi | |
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Explanation: Typhoid fever, also known as typhoid, is a common worldwide bacterialdisease, transmitted by the ingestion of food or water contaminated with the feces of an infected person, which contain the bacterium Salmonella typhi, serotype Typhi. Salmonella enteric is a subspecies of Salmonella enterica, the rod shaped, flagellated, aerobic, Gram-negative bacterium. It is a member of the genus Salmonella. |
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| 166. |
BCG immunization is for - |
| A. | Measles |
| B. | Tuberculosis |
| C. | Diphtheria |
| D. | Leprosy |
| Answer» B. Tuberculosis | |
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Explanation: Bacillus Calmette-Guerin (BCG) is a vaccine against tuberculosis that is prepared from a strain of the attenuated (weakened) live bovine tuberculosis bacillus, Mycobacterium bovis, that has lost its virulence in humans by being specially subcultured in an artificial medium for 13 years, and also prepared from Mycobacterium tuberculosis. |
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| 167. |
Which of the following crops is not harvested in March April? |
| A. | Paddy |
| B. | Wheat |
| C. | Mustard |
| D. | All of the above |
| Answer» A. Paddy | |
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Explanation: Rice (paddy) is a Kharif crop that is sown in the beginning and harvested by the end of the monsoon season, the cultivation period being July to November. |
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| 168. |
The noble has used for the treatment of cancer is - |
| A. | Helium |
| B. | Argon |
| C. | Krypton |
| D. | Radon |
| Answer» D. Radon | |
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Explanation: Radon was once commonly used to treat cancer. The radiation it gives off kills cancer cells. However, the element must be used with great care because radiation can kill healthy cells as well. In fact, the bad side-effects of radiation therapy are caused by the killing of healthy cells by radiation. Today, radon is not as widely used for the treatment of cancer. Radon is a radioactive element. |
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| 169. |
Bt seed is associated with - |
| A. | Rice |
| B. | Wheat |
| C. | Cotton |
| D. | Oil seeds |
| Answer» C. Cotton | |
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Explanation: Cotton is the most popular of the Bt crops: it was planted on about 1 .8 million acres (728437 ha) in 1996 and 1997. The Bt gene was isolated and transferred from a bacterium bacillus thurigiensis to American cotton. The American cotton was subsequently crossed with Indian cotton to introduce the gene into native varieties. The Bt cotton variety contains a foreign gene obtained from bacillus thuringiensis. This bacterial gene, introduced genetically into the cotton seeds, protects the plants from bollworm (A. lepidoptora), a major pest of cotton. |
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| 170. |
Leukaemia or blood cancer is characterised by abnormal increase of the – |
| A. | Red blood cells |
| B. | White blood cells |
| C. | Blood platelets |
| D. | Blood plasma |
| Answer» B. White blood cells | |
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Explanation: Leukemia is a type of cancer of the blood or bone marrow characterized by an abnormal increase of immature white blood cells called "blasts". Damage to the bone marrow, by way of displacing the normal bone marrow cells with higher numbers of immature white blood cells, results in a lack of blood platelets, which are important in the blood clotting process. This means people with leukemia may easily become bruised, bleed excessively, or develop pinprickbleeds (petechiae). White blood cells, which are involved in fighting pathogens, may be suppressed or dysfunctional. |
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| 171. |
Which of the following techniques can be used to establish the paternity of a child? |
| A. | Protein analysis |
| B. | Chromosome counting |
| C. | Quantitative analysis of DNA |
| D. | DNA finger printing |
| Answer» D. DNA finger printing | |
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Explanation: 0 |
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| 172. |
In `Scorpion' poison is present in the - |
| A. | leg |
| B. | hand |
| C. | mouth |
| D. | sting |
| Answer» D. sting | |
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Explanation: Scorpions are predatory arthropod animals which are easily recognized by the pair of grasping claws and the narrow, segmented tail, often carried in a characteristic forward curve over the back, ending with a venomous stinger. All known scorpion species possess venom and use it primarily to kill or paralyze theirprey. This venom is present in their stings. |
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| 173. |
The total number of bones in man is - |
| A. | 212 |
| B. | 206 |
| C. | 202 |
| D. | 200 |
| Answer» B. 206 | |
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Explanation: A typical adult human skeleton consists of 206 bones. 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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| 174. |
The number of heart beats on an average in an adult human is in the range of |
| A. | 60-65 |
| B. | 66-70 |
| C. | 71-80 |
| D. | 8590 |
| Answer» C. 71-80 | |
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Explanation: The average heart rate for adult humans is about 70 to 75 beats per minute in a normal relaxed mode. While we tend to think of the "normal" heart beat rate as being "72 beats per minute", in actuality the heart beat rate is not and should not be constant. |
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| 175. |
The end product of the digestion of starch in the alimentary canal is — |
| A. | glucose |
| B. | galactose |
| C. | maltose |
| D. | isomaltose |
| Answer» A. glucose | |
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Explanation: Starch or amylum is a carbohydrate consisting of a large number of glucose units joined by glycosidic bonds. Sugar from molasses or sugarcane, fruits or starch is first converted to glucose and fructose in presence of an enzyme called invertase.' |
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| 176. |
The balance of CO2 and O2 in atmosphere is due to . |
| A. | Transportation |
| B. | Photosynthesis |
| C. | Respiration |
| D. | Evaporation |
| Answer» B. Photosynthesis | |
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Explanation: Photosynthesis takes in the carbon dioxide produced by all breathing organisms and reintroduces oxygen into the atmosphere. |
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| 177. |
Which of the following vitamin combines with avid in contained in egg-white forming a compound that cannot be absorbed by the intestine and is therefore, excreted – |
| A. | vitamin B₂ |
| B. | vitamin B₃ |
| C. | vitamin B₇ |
| D. | vitamin A |
| Answer» C. vitamin B₇ | |
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Explanation: 0 |
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| 178. |
Bark of this tree is used as' a condiment – |
| A. | Cinnamon |
| B. | Clove |
| C. | Neem |
| D. | Palm |
| Answer» A. Cinnamon | |
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Explanation: Cinnamon is a spice obtained from the inner bark of several trees from the genus Cinnamomum that is used in both sweet and savoury foods. The bark must be processed immediately after harvesting while still wet. Once processed, the bark will dry completely in four to six hours, provided that it is in a wellventilated and relatively warm environment. Sri Lanka cinnamon has a very thin, smooth bark with a light-yellowish brown colour and a highly fragrant aroma. |
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| 179. |
Synapse gap is present between which of the following? |
| A. | Two neurons |
| B. | Brain and Spinal Cord |
| C. | Two Kidneys |
| D. | None of these |
| Answer» A. Two neurons | |
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Explanation: The gap between the two neurons is called the synapse. It is a structure that permits a neuron (or nerve cell) to pass an electrical or chemical signal to another neuron. |
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| 180. |
The acid contained in vinegar is – |
| A. | Acetic acid |
| B. | Ascorbic acid |
| C. | Citric acid |
| D. | Tartaric acid |
| Answer» A. Acetic acid | |
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Explanation: Table vinegar typically contains between 4 and 8 % acetic acid (ethanoic acid). |
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| 181. |
Which one of the following is used to remove Astigmatism for a human eye? |
| A. | Concave lens |
| B. | Convex lens |
| C. | Cylindrical lens |
| D. | Prismatic lens |
| Answer» C. Cylindrical lens | |
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Explanation: In Astigmatism, eye cannot see objects in two orthogonal directions clearly simultaneously. This abnormality is removed by using cylindrical lens. |
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| 182. |
Besides carbohydrates, a major source of energy in our food is constituted by |
| A. | Proteins |
| B. | Fats |
| C. | Minerals |
| D. | Vitamins |
| Answer» B. Fats | |
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Explanation: Fats consist of a wide group of compounds that are generally soluble in organic solvents and generally insoluble in water. Chemically, fats are triglycerides, ft-jesters of glycerol and any of several fatty acids. Fats provide a source of concentrated energy as well as the fat-soluble vitamins A, D, E and K. Fat transports these vital nutrients around the body. Fats or lipids are broken down in the body by enzymes called lipases produced in the pancreas. Examples of edible animal fats are lard, fish oil, butter/ghee and whale blubber. |
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| 183. |
The limb bones of children become bent if there is deficiency of vitamin - |
| A. | A |
| B. | B1 |
| C. | D |
| D. | E |
| Answer» C. D | |
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Explanation: Rickets is weakness and deformity of the bones that occurs from lack of vitamin D. Vitamin D occurs in whole milk, butter, egg yolks, animal fats, and liver, especially fish liver oil. The body also makes its own vitamin D when sunlight shines on the skin. Children who do not eat enough foods with vitamin D, and who do not get enough sunlight, gradually develop signs of rickets. |
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| 184. |
Which of the following diseases is NOT caused by the smog? |
| A. | Asthma |
| B. | Throat Cancer |
| C. | Emphysema |
| D. | Breathing problem |
| Answer» B. Throat Cancer | |
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Explanation: Throat cancer can start in the oesophagus (food pipe), larynx (voice box), thyroid gland or cells lining the throat (squamous cells). |
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| 185. |
Too much consumption of tea or coffee can result in deficiency of – |
| A. | Vitamin B12 |
| B. | Calcium |
| C. | Vitamin C |
| D. | Albumin |
| Answer» B. Calcium | |
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Explanation: 0 |
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| 186. |
Deficiency of Vitamin B6 in man causes |
| A. | rickets |
| B. | scurvy |
| C. | beri-beri |
| D. | anaemia |
| Answer» D. anaemia | |
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Explanation: Vitamin B6 is a member of the B complex family of vitamins. Known as pyridoxine, its deficiency may lead to microcytic anemia (because pyridoxyl phosphate is the cofactor for heme synthesis), depression, dermatitis, high blood pressure (hypertension), water retention, and elevated levels of homocysteine. Vitamin B6 is found in a wide range of foods, including meat, poultiy, legumes, bananas and foods that are fortified with a supplemental form. Adults need 1.3 to 1.7 milligrams (mg) daily to meet their requirements. |
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| 187. |
First successful heart, transplantation was done by - |
| A. | D.S. Paintal |
| B. | C.N. Barnard |
| C. | D. Shetty |
| D. | P. K. Sen |
| Answer» B. C.N. Barnard | |
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Explanation: Christiaan Neethlirig Barnard was a South African cardiac surgeon who performed the world's first successful human-to-human heart transplant. He performed the world's first human heart transplant operation on 3 December 1967, in an operation assisted by his brother, Marius Barnard; the operation lasted nine hours and used a team of thirty people. The patient, Louis Washkansky, was a 54-year-old grocer, suffering from diabetes and incurable heart disease. |
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| 188. |
Which among the following is also called as 'power house of the cell'? |
| A. | Plastids |
| B. | Mitochondria |
| C. | Golgi bodies |
| D. | Cell wall |
| Answer» B. Mitochondria | |
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Explanation: The mitochondria is called the powerhouse of the cell because it is responsible for producing most of the cell's energy, or adenosine tri-phosphate (ATP). |
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| 189. |
Which one of the following pairs belongs to cartilaginous fish? |
| A. | Shark and Tuna |
| B. | Shark and Ray |
| C. | Skates and Hilsa |
| D. | RayandEel |
| Answer» B. Shark and Ray | |
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Explanation: Chondrichthyes or cartilaginous fishes are jawed fish with paired fins, paired nares, scales, a twochambered heart, and skeletons made of cartilage rather than bone. The cartilaginous fish are so named because their skeleton is composed of cartilage which is not reinforced by the minerals that make bone. It includes elasmobranchs: sharks, rays and skates, etc. |
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| 190. |
Lac, which is used as sealing wax is produced by - |
| A. | stem |
| B. | root |
| C. | insect |
| D. | bird |
| Answer» C. insect | |
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Explanation: Lac is the scarlet resinous secretion of a number of species of insects. There are several lac insects, some of which secrete highly pigmented wax. The Indian lac insect Laccifer lacca is important commercially. |
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| 191. |
Which of the following is a mangroves flora? |
| A. | Spruce |
| B. | Moss |
| C. | Rhizophora |
| D. | Cypress |
| Answer» C. Rhizophora | |
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Explanation: Rhizophora is a genus of tropical mangrove trees, sometimes collectively called true mangroves. The most notable species is the red mangrove (Rhizophora mangle) but some other species and a few natural hybrids are known. |
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| 192. |
Which one of the following hormones contains iodine? |
| A. | Thyroxine |
| B. | Testosterone |
| C. | Insulin |
| D. | Adrenaline |
| Answer» A. Thyroxine | |
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Explanation: Thyroxine is produced by attaching iodine atoms to the ring structures of this protein's tyrosine residues; thyroxine (T4) contains four iodine atoms, while triiodothyronine (T3), otherwise identical to T4, has one less iodine atom per molecule. |
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| 193. |
What is the approximate time required for a heart-beat? |
| A. | 0.5 second |
| B. | 0.8 second |
| C. | 0.5 minute |
| D. | 1.0 minute |
| Answer» B. 0.8 second | |
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Explanation: The heart has an increasing rhythmic activity. It pumps blood by its contraction and relaxation. The contraction of the heart is called systole and the relaxation is called diastole. The contraction and relaxation together constitute the heart beat. The heart beats at the rate of 72 beats per minute. There are 3 main events in the cardiac cycle. Auricular Systole (Atrial Systole) phase involves the contraction of the 2 auricles, pushing the blood into the respective ventricles. The atrial systole takes 0.1 second. Ventricular Systole takes about 0.3 seconds. Ventricular systole is followed by ventricular diastole. |
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| 194. |
Who discovered the Cholera-bacillus? |
| A. | Louis Pasteur |
| B. | Ronald Ross |
| C. | Robert Koch |
| D. | Joseph Lister |
| Answer» C. Robert Koch | |
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Explanation: Robert Kach was a German physician. He became famous for isolating Bacillus anthracis 8 7, the Tuberculosis bacillus (1882) and Vibrio cholerae (1883) and for his development of Koch's postulates. He was awarded the Nobel Prize in Physiology or Medicine in 1905 for his tuberculosis findings. He is considered one of the founders of microbiology. |
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| 195. |
Out of the following glands which is referred to as the master gland? |
| A. | Thyroid |
| B. | Adrenal gland |
| C. | Pituitary |
| D. | Pancreas |
| Answer» C. Pituitary | |
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Explanation: The pituitary gland is a peasized gland located at the base of the skull between the optic nerves. The pituitary gland secretes hormones. Hormones are chemicals that travel through our blood stream. The pituitary is sometimes referred to as the "master gland" as it controls hormone functions such as our temperature, thyroid activity, growth during childhood, urine production, testosterone production in males and ovulation and estrogen production in females. |
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| 196. |
Which of the following is most important for growth of children upto the age of 14? |
| A. | Proteins |
| B. | Vitamins |
| C. | Fats |
| D. | Milk |
| Answer» A. Proteins | |
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Explanation: Proteins are very important for children as they help their body grow. Proteins are the source of amino acids, which are the building blocks of your child's body. Amino acids help the development of muscle, bones, skin and various organs in children. The enzymes which are catalysts of body growth are proteins produced by the body. As children grow, their immune system also keeps improving and maturing. |
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| 197. |
Which of the following is not required for seed germination’? |
| A. | Water |
| B. | Air |
| C. | Sunlight |
| D. | Suitable temperature |
| Answer» C. Sunlight | |
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Explanation: Plants need sunlight to conduct the carbohydrate-making process called photosynthesis in their green leaves and stems. Seeds do not contain green pigment, but merely a dormant embryo. Seeds do not need to bask in sunlight to germinate. However, the warmth frorri sunlight can create a soil environment more, conducive for gemination. The requirements for seed germination vary among all plant species. |
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| 198. |
Oxygen liberated during photo- synthesis is coming from : |
| A. | Carbon dioxide |
| B. | Water |
| C. | Bresk down of chlorophy II |
| D. | Atmosphere |
| Answer» B. Water | |
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Explanation: Oxygen liberated during photosynthesis is coming m6t.o create a stable, unstirred layer to support surface neutralization of acid and act as a protective physical barrier against luminal pepsin. |
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| 199. |
Which of the following is NOT included in the Technology Mission? |
| A. | Oil seeds |
| B. | Pulses |
| C. | Maize |
| D. | Vegetables |
| Answer» D. Vegetables | |
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Explanation: 0 |
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| 200. |
Founder of Homeopathy is - |
| A. | SamuelHahnemann |
| B. | Hippocrates |
| C. | Charaka |
| D. | Sushrutha |
| Answer» A. SamuelHahnemann | |
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Explanation: Homeopathy is a system of alternative medicine originated in 1796 by Samuel Hahnemann, based on his doctrine of similia aim.' 'bus curentur ("like cures like"), according to which a substance that causes the symptoms of a disease in healthy people will cure that disease in sick people. Homeopathy is a vita list philosophy that interprets diseases and sickness as caused by disturbances in an immaterial vital force or life force. Disturbances are believed to manifest themselves first in mental symptoms, and eventually progress to physical disease if untreated. |
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