If an individual's respiratory rate decreases, then blood CO2 levels
A. rise, blood H+ levels rise, and blood pH falls.
B. rise, blood H+ levels fall, and blood pH falls.
C. fall, blood H+ levels fall, and blood pH falls.
D. rise, blood H+ levels rise, and blood pH rises.
E. fall, blood H+ levels rise, and blood pH rises.
Answer: A
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Indicate whether the statement is true or false
If the binding of muscarine to its receptor in the heart causes the beta-gamma complex of the G-protein to bind to a K+ channel, ________.
A. the K+ channel will close, leading to depolarization B. the K+ channel will open, leading to depolarization C. the K+ channel will open, leading to hyperpolarization and inhibition D. the K+ channel will close, leading to hyperpolarization and inhibition