Diffusion and Osmosis Answer Key
Understand how molecules move across cell membranes through diffusion and osmosis.
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Passive Transport
Q1.What is diffusion?
The movement of molecules from high concentration to low concentration until evenly distributed (no energy required).
Q2.What is osmosis?
The diffusion of water across a selectively permeable membrane.
Q3.What's a selectively permeable membrane?
A membrane that lets some substances through but not others (like the cell membrane).
Solutions and Cells
Q4.What happens to a cell in a hypotonic solution?
Q5.What happens to a cell in a hypertonic solution?
Q6.What's an isotonic solution?
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