Diffusion

Question 1

What is diffusion?

Answer 1

The movement of particles from a high concentration to a low concentration.

Question 2

What is osmosis?

Answer 2

The movement of water particles across a partially permeable membrane from a region of high concentration to a region of low concentration.

Question 3

What is active transport?

Answer 3

Active transport is the movement of particles across a cell membrane from a region of lower concentration to a region of higher concentration.

Question 4

How does active transport work in plants?

Answer 4

Minerals are absorbed from the soil into the roots.

Question 5

How does active transport work in humans?

Answer 5

Active transport happens in the gut. This occurs when there is a lower concentration of nutrients in the gut than there is in the blood. If this is the case, it goes from a lower concentration (gut) to a higher concentration (blood) - going against a concentration gradient.