An adipose (fat) cell responds to the presence of the hormone epinephrine by increasing cytosolic cyclic AMP production, which leads to the catabolism of both glycogen and fat. What is the most likely explanation for this phenomenon?
A. Cyclic AMP-dependent protein kinase activates two kinds of enzymes.
B. Cyclic AMP directly activates enzymes that catabolize glycogen and fat.
C. Epinephrine is binding to two types of receptors in the plasma membrane.
D. The activated receptor complex stimulates production of two different second messengers.
Answer: A
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Cells in the lungs that phagocytize inhaled debris are known as ________.
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Identify the factor(s) that would increase Hb's affinity for carbon dioxide in a red blood cell
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