Q. Which one of the following is not a second messenger in hormone action?
A) Calcium
B) Sodium
C) cAMP
D) cGMP
Explanation
${Ca}^{+},$ cAMP and cGMP are secondary messenger in hormone action.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.