Biology - Comprehensive Mock Test 53

Question 521 Easy

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 522 Medium

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 523 Easy

Which is an organic compound found in most cells?

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

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Question 524 Medium

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 525 Easy

Which one is diaminodicarboxylic amino acid?

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

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Question 526 Easy

Chitin is a ?

A) Polysaccharide B) Nitrogenous polysaccharide C) Lipoprotein D) Protein

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Question 527 Medium

Which of the following is not a conjugated protein?

A) Peptone B) Phosphoprotein C) Lipoprotein D) Chromoprotein

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Question 528 Easy

Example of a typical homopolysaccharide is ?

A) Lignin B) Suberin C) Inulin D) Starch

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Question 529 Medium

Feedback inhibition of enzymes is affected by which of the following ?

A) enzyme B) substrate C) end products D) intermediate end products

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Question 530 Medium

With reference to enzymes, which one of the following statements is true?

A) Apoenzyme = Holoenzyme + Coenzyme B) Holoenzyme = Apoenzyme + Coenzyme C) Coenzyme = Apoenzyme + Holoenzyme D) Holoenzyme = Coenzyme – Apoenzyme

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