1. Active Transport Notes
1a. Cells are enclosed within semipermeable membranes that regulate their interaction with their surroundings.

2. Objective
Describe active transport.

3. Vocabulary
Active transport

4. Proteins can transport materials against a concentration gradient.

5. Active transport
Energy-requiring movement of molecules across a membrane from a region of lower concentration to a region of higher concentration.

6. During active transport, a cell uses energy to move substances against a concentration gradient – that is, from a lower to a higher concentration.
(Figure on board)