Which is an example of a second messenger?
A) Protein kinase A
B) An ion channel
C) Cyclic AMP
D) GABA
E) Insulin

Name: Which is an example of a second messenger? A) Protein kinase A B) An ion channel C) Cyclic AMP D) GABA E) Insulin
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Cyclic AMP (cAMP) is a classic example of a second messenger. It is a signaling molecule that relays signals from first messengers (such as hormones or neurotransmitters) outside the cell to target molecules inside the cell, thereby initiating a cellular response.

Which Is an Example of a Second Messenger