Multiple choice

Movement of water across the plasma membrane is known as

  1. diffusion

  2. plasmolysis

  3. osmosis

  4. active transport

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Osmosis is specifically the movement of water molecules across a selectively permeable membrane from a region of lower solute concentration to higher solute concentration. Diffusion refers to solute movement, plasmolysis is cell shrinkage in hypertonic solutions, and active transport requires energy.