Biology - Mock Test 117

Question 1161

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 1162

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 1163

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

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

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Question 1164

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 1165

The “Repeating Unit” of glycogen is ?

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

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Question 1166

Fluidity of bio-membranes can be shown by ?

A) Electron microscope B) Tissue culture C) Phase-contrast microscope D) Fluorescence microscope

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Question 1167

Enzymes that catalyse inter-conversion of optical, geometrical or positional isomers are ?

A) Ligases B) Lyases C) Hydrolases D) Isomerases

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Question 1168

Which is an organic compound found in most cells?

A) Glucose B) Water C) Sodium chloride D) Oxygen

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Question 1169

The effectiveness of an enzyme is affected least by ?

A) Temperature B) Concentration of the substrate C) Original activation energy of the system D) Concentration of the enzyme

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Question 1170

Which one is diaminodicarboxylic amino acid?

A) Cystine B) Lysine C) Cysteine D) Aspartic Acid

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