Which Observation Suggested to Sutherland the Involvement of a Second

question 14

Multiple Choice

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 only when epinephrine and glycogen phosphorylase were mixed.

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Subjective Approach

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A method to calculate the average cost of goods produced or acquired, weighted by the quantities.