Active Transport: Oak National Academy

Question 1

What is active transport?

Answer 1

Active transport moves substances from a low to a high concentration (against a concentration gradient), through paritally- permeable membrane. This requires energy from respiration.

Question 2

Does active transport require energy?

Answer 2

Active transport requires energy from respiration.

Question 3

What two things are needed for active transport to occur in plants?

Answer 3

• Energy is required to absorb substances against the concentration gradient.
• Carrier proteins in the cell membrane are required.

Question 4

What are the adaptations of the root hair cells for active transport to occur?

Answer 4

• They have a large surface area to absorb minerals.
• A lot of mitochondria, providing energy for active trasnport to occur.

Question 5

Give an example of active transport in humans.

Answer 5

• Absorb sugars (glucose) from lower concentration in gut into blood, which has higher sugar concentration.
• Sugar molecules needed for respiration.

cells of wall of small intestine will have mitochondria

Question 6

Why do plants require minerals and ions from the soil?

Answer 6

• They require it for growth.