Topic 1 - Active Transport

Question 1

What is active transport?

Answer 1

The movement of substances from a dilute solution to a more concentrated solution against a concentration gradient, requiring energy from respiration

Question 2

Why do cells use active transport?

Answer 2

To absorb substances across partially permeable membranes against the concentration gradient

Question 3

What does active transport require ?

Answer 3

Energy from respiration

Question 4

Why does active transport require energy?

Answer 4

To move substances against a concentration gradient

Question 5

What are cells able to absorb from dilute solutions?

Answer 5

Ions

Question 6

Why do people with cystic fibrosis have thick, sticky mucus?

Answer 6

Their active transport system in their mucus cells is not working properly

Question 7

How does active transport work in regards to a concentration gradient?

Answer 7

From a low concentration to a high concentration which is against the concentration gradient