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Why it matters: The video calls mixing up water and solute a super common mistake.

Osmosis

Osmosis is water moving across a membrane that lets only some things through. The water moves toward the side with more solute. The solute itself stays put.

Evidence: Osmosis

“Osmosis is the diffusion of water across a selectively permeable membrane.”
Textbook, page 112
“The solute itself does not cross; only the water moves.”
Textbook, page 112
“osmosis is specifically water moving across a membrane water moves toward the side with more solute”
Review video captions, at 00:02:44
“osmosis = water diffusion”
Notes typed in class

Quotes are copied word for word from the sample’s sources.

Checkpoint

Can you explain “Osmosis” out loud without looking?

In your own guide, your answer is saved to plan what you study next.

Next stops

Mitochondria
Try the practice questionsMake a guide from your own notes