Multiple Choice
In passive transport, how does increasing the distance a molecule must travel (diffusion path length) affect the rate of diffusion across a medium when all other factors remain constant?
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9. Transport Across Membranes
Passive Transport: Diffusion and Osmosis
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Which of the following statements is true of osmosis?
A
Osmosis is the diffusion of water across a membrane from higher solute concentration to lower solute concentration.
B
Osmosis is the net movement of water across a selectively permeable membrane from a region of lower solute concentration to a region of higher solute concentration.
C
Osmosis requires ATP hydrolysis to move water against its concentration gradient.
D
Osmosis is the movement of solute molecules down their concentration gradient through a membrane without transport proteins.
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Passive Transport: Diffusion and Osmosis practice set
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