3.8 Active Transport

Question 1

Define active transport

Answer 1

the movement of molecules or ions into or out of a cell from a region of lower concentration to region of higher concentration using energy and carrier molecules.

Question 2

What are the four ways it differs from passive transport?

Answer 2

Energy (ATP) is needed
Materials move against the concentration gradient
Carrier protein molecules (pumps) are involved
The process is selective

Question 3

What are the two ways active transport can use ATP?

Answer 3

By using ATP directly to move molecules
OR
Co-transport