Which part of the brain helps regulate appetite, thirst, emotions, and basic behavior patterns?
A. hypothalamus
B. thalamus
C. brainstem
D. cerebellum
Answer: A
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Indicate whether the statement is true or false
The combining form antagon/o- means ________
A) "block; hold back" B) "exciting; strengthening" C) "oppose; work against" D) "receive"
An increase in PCO2 in the blood results in the formation of bicarbonate in the red blood cell. Because bicarbonate carries a negative charge (anion), the removal of negatively charged molecule from the red blood cell is required to prevent an electrochemical imbalance across the cell membrane. This problem is avoided by
A. movement of chloride molecules out of the red blood cell. B. movement of chloride molecules into the red blood cell. C. movement of sodium molecules out of the red blood cell. D. both movement of sodium molecules out of the red blood cell and movement of chloride molecules into the red blood cell are correct
In the United States, a net gain of one person occurs how frequently?
A) Every 3 seconds B) Every 11 seconds C) Every 33 seconds D) Every 3 minutes