Multiple Choice
When does passive transport occur across a cell membrane?
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9. Transport Across Membranes
Passive Transport: Diffusion and Osmosis
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In the context of passive transport, osmosis is defined as the movement of which substance across a selectively permeable membrane?
A
Solute molecules moving from higher solute concentration to lower solute concentration through a membrane channel
B
Water molecules moving from higher solute concentration (lower water potential) to lower solute concentration (higher water potential)
C
Ions moving against their electrochemical gradient using ATP-dependent pumps
D
Water molecules moving from lower solute concentration (higher water potential) to higher solute concentration (lower water potential)
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