More cards in this set

What do dissolved particles diffuse in and out of cells through?

Diffusion and osmosis both involve stuff moving from what?

Why is it that active transport comes in?

What do the gases and dissolved substances have to move through?

What do exchange surfaces have to allow?

Why are exchange surfaces adapted to maximise effectiveness?

Exchanging substances gets more difficult in what?

What does the structure of leaves do?

What diffuses into the hair spaces within the leaf?

The underneath of the leaf is a what?