Home Biology Biomolecules Statement Based Questions Which of the following statements about enzy…
Biology Biomolecules Statement Based Questions Single Correct MCQ
Published on: August 21, 2026

Which of the following statements about enzymes are true?

(i) Enzymes do not alter the overall change in free energy for a reaction.

(ii) Enzymes are proteins whose three-dimensional shape is key to their functions.

(iii) Enzymes speed up reactions by lowering activation energy.

(iv) Enzymes are highly specific for reaction.

(v) The shape of an enzyme does not effect its activity.

(vi) The energy input needed to start a chemical reaction is called activation energy.

A
All of these
B
All of these except (v)
C
(v) and (vi)
D
(ii) and (iv)

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