Chapter 5 - Membranes

Question 1

diffusion

Answer 1

A form of passive transport. The movement of particles from a high concentration to a low concentration.

Question 2

osmosis

Answer 2

The movement of water across a semi-permeable membrane from a low solute concentration to high solute concentration, to dilute the solute.

Question 3

facilitated diffusion

Answer 3

Movement of a molecule from high to low concentration with the help of a carrier protein.

- is specific
- is passive
- saturates when all carriers are occupied

Question 4

active transport

Answer 4

• requires energy – ATP is used directly or indirectly to fuel active transport
• moves substances from low to high concentration (against the concentration gradient)
• requires the use of carrier proteins

Question 5

A form of passive transport. The movement of particles from a high concentration to a low concentration.

Answer 5

Diffusion

Question 6

The movement of water across a semi-permeable membrane from a low solute concentration to high solute concentration, to dilute the solute.

Answer 6

Osmosis

Question 7

Movement of a molecule from high to low concentration with the help of a carrier protein.

Answer 7

Facilitated diffusion