Asked by Maria Gonzalez on May 20, 2024
Verified
Which molecule is a first messenger but not a second messenger?
A) G protein
B) Cyclic AMP
C) Acetylcholine
D) Protein kinase
E) Adenylyl cyclase
First Messenger
A signaling molecule that binds to a receptor at the surface of a cell, initiating a series of intracellular events that lead to a biological response.
Acetylcholine
A neurotransmitter in both the peripheral and central nervous system that is involved in muscle activation, heart rate, and memory function.
Cyclic AMP
Cyclic AMP (cAMP) is a second messenger important in many biological processes, serving as a signaling molecule that transduces extracellular signals into cellular responses.
- Gain an understanding of the various roles that cell types and molecules play in the processes of reception, signal transduction, and response during cell signaling.
Verified Answer
Learning Objectives
- Gain an understanding of the various roles that cell types and molecules play in the processes of reception, signal transduction, and response during cell signaling.
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