B1.9 Active transport

Question 1

What does active transport allow?

Answer 1

Active transport allows us to move substances from an are of low concentration to an area of high concentration

Question 2

Why is active transport important?

Answer 2

As it is widely used in cells… eg mineral ions in the soil, such as nitrate ions, are usually found in very dilute solutions.

Question 3

Give an example of when something is actively transported against a high concentration gradient:

Answer 3

Sugar such as glucose can be sucked out of your gut and kidney tubes into your blood, this is often done against a high concentrated gradient.

Question 4

What does active transport allow?

Answer 4

Root hairs to absorb mineral ions, required for healthy growth from very dilute solutions in the soil against a concentrated gradient.