Transporting Substances

Question 1

Define diffusion:

Answer 1

The movement of a substance (liquid or gas) but not water. From high to low concentration.

Question 2

Define osmosis:

Answer 2

This is the diffusion of water, across a semi-permeable membrane.

Question 3

Define active transport:

Answer 3

Movement of ions against the concentration gradient.

Question 4

What is equilibrium?

Answer 4

Equal spread of particles