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?
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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