Which of the following statements about enzymes is true? (I…

Biology Biomolecules Single Correct MCQ

Published by: CGP EDU Academic Team

Published on: August 21, 2026

Which of the following statements about enzymes is 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

(Ill) Enzymes speed up reactions by lowering activation energy

(IV) Enzyme are highly specific for reactions

(V) An enzyme like any protein has the secondary and tertiary structure.

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

II and IV

All except V

V and VI

All

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