STANDARDZoology-Endocrine System
STANDARD Zoology Signal Transduction MCQ Question
Type: MCQ-conceptual-Medium
Which one of the following is not a second messenger in hormone action
A
Sodium
B
cAMP
C
cGMP
D
Calcium
Correct Answer
Option A
Detailed Explanation
Second messengers are molecules that relay signals received at receptors on the cell surface. cAMP, cGMP, and calcium are common second messengers, whereas sodium is not typically involved in this role.
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