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| # | Question | Subject and topic | Difficulty |
|---|---|---|---|
| 1601 | Which hominid is considered the first human-like being and had a brain capacity of about 650–800 cc? | Biology/Biological Studies/Biotechnology/Biochemistry History of life and human evolution |
Easy |
| 1602 | Which group of fish is believed to have given rise to the first amphibians? | Biology/Biological Studies/Biotechnology/Biochemistry History of life and human evolution |
Medium |
| 1603 | Which hominid buried its dead and lived in near-east and central Asia between about 1,00,000 and 40,000 years… | Biology/Biological Studies/Biotechnology/Biochemistry History of life and human evolution |
Medium |
| 1604 | Arrange the following in the order of increasing brain capacity: Homo erectus, Neanderthal man, Homo habilis. | Biology/Biological Studies/Biotechnology/Biochemistry History of life and human evolution |
Hard |
| 1605 | Which test is used to confirm typhoid fever? | Biology/Biological Studies/Biotechnology/Biochemistry Common human diseases |
Easy |
| 1606 | Which mosquito transmits filariasis? | Biology/Biological Studies/Biotechnology/Biochemistry Common human diseases |
Easy |
| 1607 | In malaria, the high recurring fever is caused by the release of | Biology/Biological Studies/Biotechnology/Biochemistry Common human diseases |
Medium |
| 1608 | Which organ is infected in pneumonia but not in the common cold? | Biology/Biological Studies/Biotechnology/Biochemistry Common human diseases |
Medium |
| 1609 | In a village, many people have amoebic dysentery and the houses have large numbers of houseflies. What role d… | Biology/Biological Studies/Biotechnology/Biochemistry Common human diseases |
Hard |
| 1610 | Interferons, which protect non-infected cells from viral infection, belong to which barrier of innate immunit… | Biology/Biological Studies/Biotechnology/Biochemistry Immunity |
Easy |
| 1611 | An antibody molecule is represented as | Biology/Biological Studies/Biotechnology/Biochemistry Immunity |
Easy |
| 1612 | A person bitten by a snake is given an anti-venom injection. What type of immunity does this provide? | Biology/Biological Studies/Biotechnology/Biochemistry Immunity |
Medium |
| 1613 | Which lymphocytes are mainly responsible for rejection of a transplanted organ? | Biology/Biological Studies/Biotechnology/Biochemistry Immunity |
Medium |
| 1614 | A child had measles once and never gets it again despite later exposure. Which property of acquired immunity … | Biology/Biological Studies/Biotechnology/Biochemistry Immunity |
Hard |
| 1615 | Which type of antibody is produced in allergic reactions? | Biology/Biological Studies/Biotechnology/Biochemistry Vaccination, allergy and autoimmunity |
Easy |
| 1616 | Rheumatoid arthritis is an example of | Biology/Biological Studies/Biotechnology/Biochemistry Vaccination, allergy and autoimmunity |
Easy |
| 1617 | The hepatitis B vaccine is produced using recombinant DNA technology in | Biology/Biological Studies/Biotechnology/Biochemistry Vaccination, allergy and autoimmunity |
Medium |
| 1618 | Which chemicals released from mast cells cause allergy symptoms? | Biology/Biological Studies/Biotechnology/Biochemistry Vaccination, allergy and autoimmunity |
Medium |
| 1619 | A person with a deep wound is given anti-tetanus serum instead of the tetanus vaccine. Why? | Biology/Biological Studies/Biotechnology/Biochemistry Vaccination, allergy and autoimmunity |
Hard |
| 1620 | HIV belongs to which group of viruses? | Biology/Biological Studies/Biotechnology/Biochemistry AIDS and cancer |
Easy |
| 1621 | Which property is lost when normal cells become cancerous? | Biology/Biological Studies/Biotechnology/Biochemistry AIDS and cancer |
Easy |
| 1622 | Which cells act as an "HIV factory" in an infected person? | Biology/Biological Studies/Biotechnology/Biochemistry AIDS and cancer |
Medium |
| 1623 | The spread of cancer cells from the original tumour to distant sites through the blood is called | Biology/Biological Studies/Biotechnology/Biochemistry AIDS and cancer |
Medium |
| 1624 | Why does an AIDS patient suffer from many infections, such as by Mycobacterium and Toxoplasma, that a healthy… | Biology/Biological Studies/Biotechnology/Biochemistry AIDS and cancer |
Hard |
| 1625 | Heroin is chemically | Biology/Biological Studies/Biotechnology/Biochemistry Drug and alcohol abuse |
Easy |
| 1626 | Cocaine is obtained from which plant? | Biology/Biological Studies/Biotechnology/Biochemistry Drug and alcohol abuse |
Easy |
| 1627 | Cocaine produces its stimulating effect by interfering with the transport of which neurotransmitter? | Biology/Biological Studies/Biotechnology/Biochemistry Drug and alcohol abuse |
Medium |
| 1628 | Smoking increases carbon monoxide in the blood. What is the direct effect of this? | Biology/Biological Studies/Biotechnology/Biochemistry Drug and alcohol abuse |
Medium |
| 1629 | A teenager who has been using a drug regularly feels anxiety, shakiness and nausea when he suddenly stops. Th… | Biology/Biological Studies/Biotechnology/Biochemistry Drug and alcohol abuse |
Hard |
| 1630 | Which group of microbes converts milk into curd? | Biology/Biological Studies/Biotechnology/Biochemistry Microbes in household products |
Easy |
| 1631 | The large holes seen in Swiss cheese are produced by | Biology/Biological Studies/Biotechnology/Biochemistry Microbes in household products |
Easy |
| 1632 | Apart from making curd, lactic acid bacteria improve the nutritional value of milk mainly by increasing its c… | Biology/Biological Studies/Biotechnology/Biochemistry Microbes in household products |
Medium |
| 1633 | A student keeps bread dough with yeast in a warm place and it swells up. The swelling is mainly caused by | Biology/Biological Studies/Biotechnology/Biochemistry Microbes in household products |
Medium |
| 1634 | A person adds a spoonful of boiled and cooled curd to warm milk, but the milk does not set. The most likely r… | Biology/Biological Studies/Biotechnology/Biochemistry Microbes in household products |
Hard |
| 1635 | Which microbe is used for the commercial production of citric acid? | Biology/Biological Studies/Biotechnology/Biochemistry Microbes in industry |
Easy |
| 1636 | Cyclosporin A, used to prevent rejection of transplanted organs, is obtained from | Biology/Biological Studies/Biotechnology/Biochemistry Microbes in industry |
Easy |
| 1637 | A detergent company wants an enzyme that removes oily stains from clothes. Which microbial enzyme should it a… | Biology/Biological Studies/Biotechnology/Biochemistry Microbes in industry |
Medium |
| 1638 | Statins produced by Monascus purpureus lower blood cholesterol because they | Biology/Biological Studies/Biotechnology/Biochemistry Microbes in industry |
Medium |
| 1639 | A doctor gives a patient who has just suffered a heart attack an injection that dissolves the clot in a coron… | Biology/Biological Studies/Biotechnology/Biochemistry Microbes in industry |
Hard |
| 1640 | Which group of microbes is chiefly responsible for producing methane in a biogas plant? | Biology/Biological Studies/Biotechnology/Biochemistry Sewage treatment and biogas |
Easy |
| 1641 | In a sewage treatment plant, the masses of bacteria associated with fungal filaments that form in aeration ta… | Biology/Biological Studies/Biotechnology/Biochemistry Sewage treatment and biogas |
Easy |
| 1642 | Water sample P has a BOD much higher than sample Q. What does this indicate? | Biology/Biological Studies/Biotechnology/Biochemistry Sewage treatment and biogas |
Medium |
| 1643 | Why is a part of the activated sludge pumped back into the aeration tank? | Biology/Biological Studies/Biotechnology/Biochemistry Sewage treatment and biogas |
Medium |
| 1644 | Cattle dung is a good raw material for biogas plants mainly because it | Biology/Biological Studies/Biotechnology/Biochemistry Sewage treatment and biogas |
Hard |
| 1645 | Which organism is commonly used as a biocontrol agent against aphids? | Biology/Biological Studies/Biotechnology/Biochemistry Biocontrol agents and biofertilisers |
Easy |
| 1646 | Which of the following is a free-living nitrogen-fixing bacterium used as a biofertiliser? | Biology/Biological Studies/Biotechnology/Biochemistry Biocontrol agents and biofertilisers |
Easy |
| 1647 | The main benefit a plant gets from a mycorrhizal fungus such as Glomus is | Biology/Biological Studies/Biotechnology/Biochemistry Biocontrol agents and biofertilisers |
Medium |
| 1648 | Cyanobacteria are especially valued as biofertilisers in | Biology/Biological Studies/Biotechnology/Biochemistry Biocontrol agents and biofertilisers |
Medium |
| 1649 | A farmer practising integrated pest management wants an agent that kills a specific insect pest but spares be… | Biology/Biological Studies/Biotechnology/Biochemistry Biocontrol agents and biofertilisers |
Hard |
| 1650 | In 1972, the first recombinant DNA was constructed by | Biology/Biological Studies/Biotechnology/Biochemistry Principles of biotechnology |
Easy |