Multiple Choice
In passive transport, the principal force driving net movement of molecules during diffusion across a membrane is the:
1
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9. Transport Across Membranes
Passive Transport: Diffusion and Osmosis
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Which statement best describes how the magnitude of a concentration gradient affects the net rate of diffusion across a membrane in passive transport?
A
A steeper concentration gradient produces a faster net diffusion rate.
B
Net diffusion occurs only when solute concentrations are equal on both sides of the membrane.
C
The net diffusion rate is independent of the concentration gradient as long as the temperature is constant.
D
A steeper concentration gradient produces a slower net diffusion rate.
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