2024 BiomoleculesCatalytic Cycle of Enzyme Action Medium Question 15 of 107 in Biomolecules

Regarding catalytic cycle of an enzyme action, select the correct sequential steps: A. Substrate enzyme complex formation. B. Free enzyme ready to bind with another substrate. C. Release of products. D. Chemical bonds of the substrate broken. E. Substrate binding to active site. Choose the correct answer from the options given below:

A B, A, C, D, E
B E, D, C, B, A
C E, A, D, C, B
D A, E, B, D, C

The answer is C.

Solution

The catalytic cycle of an enzyme: 1. The substrate binds to the active site of the enzyme (E). 2. The enzyme-substrate complex is formed (A). 3. The active site, in close proximity to the substrate, breaks the chemical bonds of the substrate (D). 4. The enzyme releases the products of the reaction (C). 5. The free enzyme is ready to bind with another molecule of substrate (B). So the sequence is E, A, D, C, B.

Concept Correct order of substrate binding, bond breaking, product release in enzyme catalysis

Biomolecules in past papers

107 questions from this chapter have appeared across 26 exam years.