In secondary active transport, when both the driving ion and the transport ion are in high concentration outside of the
cell, in which direction will the two ions move?
a. As the driving ion moves in, the transport ion moves in
b. As the driving ion moves in, the transport ion moves out
c. As the driving ion moves out, the transport ion moves in
d. As the driving ion moves out, the transport ion moves out
e. As long as both ions are moving together, they can go either in or out
ANSWER: b
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True or False: Humans are dead-end hosts for the West Nile virus, because they do NOT develop the viremia necessary to infect mosquitoes
a. TRUE b. FALSE
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Determine the rate of diffusion in the gas-exchange organ of an air-breathing animal where the area for gas exchange in the lung is 200 mm2,
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