Topic 2b- exchange across cell membranes- osmosis

Question 1

What is osmosis?

Answer 1

Diffusion of water molecules across a partially permeable membrane.

Question 2

Give 2 similarities in the movement of substances by diffusion and by osmosis.

Answer 2

1. Movement down a gradient/ from high to low concentration.
2. Do not use energy from respiration/ from ATP/ from metabolism.