Biology - Mock Test 116

Question 1151

Adaptation to low temperature and freezing in animals occurs due to the production of ?

A) Chaperonins B) Proline C) Antifreeze D) Alanine

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Question 1152

A terrestrial animal must be able to ?

A) Excrete large amounts of salts in urine B) Actively pump salts out through the skin C) Conserve water D) Excrete large amount of water in urine

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Question 1153

A population with equal number of births and deaths will show ?

A) Acceleration phase of growth B) Plateau phase C) Exponential growth phase D) Initial phase of growth

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Question 1154

Which one of the following is categorized as a parasite in true sense?

A) The cuckoo lays its egg in crow's nest B) The female Anopheles bites and sucks blood from humans C) Human foetus developing inside the uterus draws nourishment from the mother D) Head louse living on the human scalp as well as laying eggs on human hair

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Question 1155

Which factor of ecosystem includes plants, animals and microorganisms?

A) Biotic factors B) Direct factors C) Indirect factors D) Abiotic factors

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Question 1156

Community is ?

A) Species structure and diversity index of an area B) Biomass C) Autotrophic and heterotrophic components D) All of these

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Question 1157

In which one of the following sets of three items each belong to the category mentioned against them?

A) Lysine, glycine, thiamine — Amino acids B) Myosin, oxytocin and gastric — Hormones C) Rennin, helicase and hyaluronidase — Enzymes D) Optic nerve, oculomotor, vagus — Sensory nerves

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Question 1158

Carbohydrates, the most abundant biomolecules on earth, are produced by ?

A) Fungi, algae and green plants cells B) All bacteria, fungi and algae C) Some bacteria, algae and green plant cells D) Viruses, fungi and bacteria

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Question 1159

Enzymes, vitamins and hormones can be classified into a single category of biological chemicals, because all of these ?

A) Are exclusively synthesized in the body of a living organism as at present B) enhance oxidative metabolism C) Are conjugated proteins D) Help in regulating metabolism

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Question 1160

Which of the following statements regarding enzyme inhibition is correct?

A) Competitive inhibition is seen when a substrate competes with an enzyme for binding to an inhibitor protein B) Non-competitive inhibitors often bind to the enzyme irreversibly C) Competitive inhibition is seen when the substrate and the inhibitor compete for the active site on the enzyme D) Non-competitive inhibition of an enzyme can be overcome by adding large amount of substrate

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