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ZoologyNEET 2024Enzymes: mechanism, factors, classification

Biomolecules

Regarding the catalytic cycle of 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 the active site.

Choose the correct answer from the options given below:

  1. A.A, E, B, D, C
  2. B.B, A, C, D, E
  3. C.E, D, C, B, A
  4. D.E, A, D, C, B✓

Solution

The catalytic cycle: substrate binds the active site (E) → enzyme–substrate complex forms (A) → the enzyme strains the substrate's bonds, which break (D) → products are released (C) → the free enzyme is ready for another substrate (B).

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