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Author Question: Which observation suggested to Sutherland the involvement of a second messenger (Read 627 times)

TI

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on: Jun 15, 2013
Which observation suggested to Sutherland the involvement of a second messenger in epinephrine's effect on liver cells?
A) Enzymatic activity was proportional to the amount of calcium added to a cell-free extract.
B) Receptor studies indicated that epinephrine was a ligand.
C) Glycogen breakdown was observed only when epinephrine was administered to intact cells.
D) Glycogen breakdown was observed when epinephrine and glycogen phosphorylase were combined.
E) Epinephrine was known to have different effects on different types of cells.


coco

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Reply #1 on: Jun 16, 2013
In class, we found it was C. Good luck with the rest.


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TI

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Reply #2 on: Jun 17, 2013
Thank again :D


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