4.4 Active Transport

Question 1

What is active transport?

Answer 1

The movement of molecules or ions into or out of a cell from a region of lower concentration to a region of higher concentration using ATP and carrier proteins.

Question 1

What is ATP used for in active transport?

Answer 1

Directly move molecules.
Individually move molecules using the concentration gradient set up by active transport.

Question 2

How is active transport different from passive forms of transport?

Answer 2

Uses ATP.
Substances are moved against the concentration gradient.
Uses carrier proteins.
Selective process.