Multiple Choice
When a second message is necessary for extracellular communication to be activated,it is provided by which one?
A) Guanosine triphosphate (GTP)
B) Adenosine monophosphate (AMP)
C) Adenosine triphosphate (ATP)
D) Guanosine diphosphate (GDP)
Correct Answer:

Verified
Correct Answer:
Verified
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