Transport Processes

Question 0

Active transport

Answer 0

L—>H (move against the gradient)

• Does require ATP
• Directional (purposeful) movement
• Always require a membrane transport protein = pump

Question 1

Passive transport

Answer 1

H—>L (moves with the gradient)

• Does not require ATP
• Random movement
• Doesn’t always require a membrane transport protein

Question 2

Examples of passive transport

Answer 2

1. Diffusion (simple)
2. Osmosis
3. Carrier facilitated diffusion

Question 3

Examples of active transport

Answer 3

1. Proton pumps
2. Cotransport pumps
3. Na+ / K+ pump