Which of the following is a second messenger?
Question and options
Which of the following is a second messenger?
- Vitamin D
- IGF
- Acetyl choline
- cAMP
Answer and explanation
Correct answer: D - cAMP
cAMP is a classic intracellular second messenger. Vitamin D, IGF and acetylcholine are first messengers (hormones or neurotransmitters).
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