Question

Which of the following statement about enzyme is correct ?

• A. They alter the equilibrium constant of reactions
• B. They increase the activation energy of reactions
• C. They are specific in their action
• D. They are consumed in the reaction

Hint:

Enzymes are specific biocatalysts: they speed up reactions without being consumed.

Answer 1

The Correct Option is C

Step 1: Recall enzyme properties:
Highly specific, highly efficient, work at a particular pH and temperature, and are not used up.

Step 2: Match with the options:
Only "They are specific in their action" is in this list. Altering the equilibrium constant, raising the activation energy and being consumed all contradict the properties of a catalyst.

Step 3: Pick:
Option C.

Final Answer:
Enzymes are specific catalysts and are not consumed. \[ \boxed{\text{(C) }\text{They are specific in their action}} \]