Multiple Choice
Which statement best describes how water moves during osmosis across a selectively permeable membrane?
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9. Transport Across Membranes
Passive Transport: Diffusion and Osmosis
Multiple Choice
In the context of passive transport, what process allows water to move across a selectively permeable cell membrane?
A
Osmosis
B
Facilitated diffusion of glucose through a carrier protein
C
Endocytosis
D
Active transport via ATP-driven pumps
Verified step by step guidance1
Understand that passive transport involves the movement of substances across a cell membrane without the use of cellular energy (ATP).
Recognize that water movement across a selectively permeable membrane occurs through a specific passive transport process called osmosis.
Recall that osmosis is the diffusion of water molecules from an area of lower solute concentration to an area of higher solute concentration through a selectively permeable membrane.
Differentiate osmosis from other processes listed: facilitated diffusion involves carrier proteins but typically for solutes like glucose, endocytosis is an energy-dependent process for engulfing substances, and active transport requires ATP to move substances against their concentration gradient.
Conclude that the correct process allowing water to move passively across the membrane is osmosis.
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