1. Topic 3 Transport

2. What types of organisms have a cell wall?
plants
bacteria
protists
fungi

3. Diffusion moves molecules form a ___high_ concentration to a ___low__ concentration.

4. True or false: after equilibrium is reached, molecules do not move anymore.

5. In a hypotonic solution, there is a low solute concentration outside a cell. Water moves _into_the cell.

6. Circle one: Who does better in a hypotonic solution? PLANTS ANIMALS

7. In a hypertonic solution, there is a high solute concentration outside a cell. Water moves __out of_____ the cell.

8. In an isotonic solution, there is an ___equal______ solute concentration outside and inside a cell

9. Circle one: Who does better in an isotonic solution? PLANTS ANIMALS

10. Facilitated diffusion needs the help of a __protein________ to move large/charged molecules across a cell membrane.

11. What type of molecule is the “facilitator” in facilitated diffusion
What type of molecule is the “facilitator” in facilitated diffusion? ______ proteins___

12. The only type of cellular transport to go AGAINST the concentration gradient is called __active transport_____.

13. What important energy molecules allows active transport to happen
What important energy molecules allows active transport to happen? ____ATP____

14. What happens to the shape of a carrier protein when ATP binds to it
What happens to the shape of a carrier protein when ATP binds to it? __it changes___.

15. What happens to the shape of A protein when potassium ions bind to it?
It changes shape to allow potassium into the cell

16. In the Na+/ K+ pump, ___ ions of sodium go out through the protein first. Then, ___ ions of potassium go in.
3,2