NEET Zoology Hormone Action Mechanism MCQ Question
If a peptide hormone that uses cyclic AMP as a second messenger causes a 5-fold increase in intracellular cyclic AMP, and this leads to a 50% increase in the activity of a specific enzyme, what would be the relative increase in enzyme activity if the intracellular cyclic AMP increased 10-fold?
100%
75%
50%
25%
Correct Answer
Detailed Explanation
Since a 5-fold increase in cyclic AMP results in a 50% increase in enzyme activity, a 10-fold increase in cyclic AMP would logically double the effect, leading to a 100% increase in enzyme activity.
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