Biology - Comprehensive Mock Test 52

Question 511 Easy

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 512 Medium

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 513 Medium

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 514 Medium

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 515 Medium

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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Question 516 Medium

Which one of the following amino-acids was not found to be synthesized in Miller's experiment?

A) Glutamic acid B) Aspartic acid C) Glycine D) Alanine

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Question 517 Medium

The catalytic efficiency of two different enzymes can be compared by the ?

A) Molecular size of the enzyme B) The pH optimum value C) The Km value D) Formation of the product

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Question 518 Medium

Which one is the most abundant protein in the animal world? ?

A) Collagen B) Insulin C) Trypsin D) Haemoglobin

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Question 519 Easy

Which one of the following is wrong statement ?

A) Phosphorus is a constituent of cell membranes, certain nucleic acids and all proteins B) Nitrosomonas and Nitrobacter are chemoautotrophs C) Anabaena and Nostoc are capable of fixing nitrogen in free-living state also D) Root nodule forming nitrogen fixers live as aerobes under free-living conditions

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Question 520 Easy

The “Repeating Unit” of glycogen is ?

A) Fructose B) Mannose C) Glucose D) Galactose

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