1. Types of Transport Review

2. The movement of particles against the direction of diffusion requiring cell energy. ACTIVE TRANSPORT

3. True or False? During diffusion molecules tend to move down the concentration gradient. TRUE

4. DIFFUSION

5. General transport method by which most molecules move across the membrane. DIFFUSION

6. A difference in concentration across a cell’s membrane. CONCENTRATION GRADIENT

7. Endocytosis of solid substances like bacteria and food. PHAGOCYTOSIS

8. FACILITATED DIFFUSION

9. A liquid mixture that involves the combination of a solvent with a solute. SOLUTION

10. Active transport of molecules out of a cell. EXOCYTOSIS

11. HYPERTONIC

12. The movement of particles from high to low concentration. DIFFUSION

13. An equal amount of a substance inside the cell and the environment the cell is living in. ISOTONIC

14. OSMOSIS

15. The diffusion of water across a cell membrane. OSMOSIS

16. Endocytosis of liquids. PINOCYTOSIS

17. Active transport of molecules into a cell. ENDOCYTOSIS

18. The substance dissolved in the liquid part of the solution. SOLUTE

19. HYPOTONIC

20. The movement of a substance from high to low concentration without energy. PASSIVE TRANSPORT

21. Type of membrane that allows ALL substances to pass through it. PERMEABLE

22. ACTIVE TRANSPORT

23. The liquid into which the solute is dissolved. SOLVENT

24. To be in balance or in a state of equality. EQUILIBRIUM

25. Type of membrane that allows only SOME substances to pass through it. SEMI-PERMEABLE (selectively)

26. More solute, less water inside the cell than the environment the cell is living in. HYPOTONIC

27. A type of membrane that allows NO substances to pass through it. IMPERMEABLE

28. How does a water molecule enter and exit a cell? OSMOSIS

29. How do most sugar molecules enter and exit a cell? ACTIVE TRANSPORT

31. More solute, less water outside the cell than inside the cell. HYPERTONIC

32. Can you identify two differences between active and passive transport? TYPE OF SUBSTANCES CONCENTRATION GRADIENT ENERGY – YES or NO?

33. Can you identify the methods of transport that do NOT require energy by the cell? PASSIVE TRANSPORT DIFFUSION OSMOSIS

34. ISOTONIC

35. What factors can control the rate of diffusion? TYPE OF MEMBRANE CONCENTRATION GRADIENT SIZE OF SUBSTANCE TEMPERATURE ACTIVITY LEVEL

36. In what direction do substances naturally travel? HIGH TO LOW CONCENTRATION

37. What cell structure controls diffusion and osmosis? CELL MEMBRANE

38. Your life depends on... Active Transport!