Which Observation Suggested to Sutherland the Involvement of a Second

question 21

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 when epinephrine and glycogen phosphorylase were combined.
• E) Epinephrine was known to have different effects on different types of cells.

---

Definitions:

Machining Activity Pool

A grouping of all the costs related to machining processes, used in activity-based costing to allocate costs more accurately.

Resource Consumption

The amount of resources used up in the production of goods or services.

Activity-Based Costing

An accounting methodology that assigns costs to products or services based on the activities and resources that contribute to their production.

Activity Cost Pools

Groupings of individual costs associated with particular activities, used in activity-based costing to allocate costs more accurately.