Multiple Choice
During osmosis in cells, what must water pass through as it moves from an area of lower solute concentration to an area of higher solute concentration?
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9. Transport Across Membranes
Passive Transport: Diffusion and Osmosis
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In passive transport, what is the primary driving force for diffusion of molecules across space or a membrane?
A
Direct consumption of ATP to pump molecules from low concentration to high concentration
B
Vesicular transport (endocytosis) that encloses molecules in membrane-bound sacs
C
A concentration gradient (net movement from higher concentration to lower concentration due to random thermal motion)
D
A membrane potential that forces all solutes to move only into the cell regardless of concentration
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Passive Transport: Diffusion and Osmosis practice set
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