10. Cell Signaling
Introduction to Cell Signaling
Multiple Choice
Multiple ChoiceEarly work on signal transduction and glycogen metabolism by Sutherland indicated that __________.
A
the signal molecule combined directly with a cytosolic enzyme to form an active quaternary structure
B
the signal molecule worked equally well with intact or disrupted cells
C
the cell-signaling pathway involves two separate steps: transduction and response
D
epinephrine is involved in response to stress
E
the signal molecule did not interact directly with the cytosolic enzyme but required an intact plasma membrane before the enzyme could be activated
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