Topic : Cell Processes Aim : Explain the two types of cell transport.

1. Topic: Cell Processes Aim: Explain the two types of cell transport. Do Now: Define the term “concentration.” HW: Work on your science fair project.

2. The sum of all life processes is known as • Regulation • Metabolism • Transport • Excretion

3. Metabolism is best described as: (multiple choice)? • control of enzyme activity • synthesis of macromolecules • breakdown of macromolecules • A and B • A,B, and C

5. Transport • Circulation • Movement of materials into and out of cells

6. The chloroplasts move around inside the cell = TRANSPORT

7. Passive Transport

8. Materials move from high  low concentration • NO ENERGY NEEDED

10. Weeee!!! high low

11. 2 Types of Passive Transport

12. 1. Diffusion: movement of materials from HIGHto LOW concentration

14. DIFFUSION LOW HIGH

15. Molecules move until concentration becomes equal on both sides (equilibrium)

16. Cell membrane Outside cell Inside cell

17. Cell membrane diffusion Outside cell Inside cell

18. Diffusion through a membrane Cell membrane Outside cell Inside cell EQUILIBRIUM

19. 2.Osmosis: diffusion of WATER

20. Movement of WATER from HIGHtoLOW concentration

22. Topic: Cell Processes Aim: Explain the two types of cell transport. Do Now: Define the term “concentration.” HW: Work on your science fair project.

24. http://zoology.okstate.edu/zoo_lrc/biol1114/tutorials/Flash/Osmosis_Animation.htmhttp://zoology.okstate.edu/zoo_lrc/biol1114/tutorials/Flash/Osmosis_Animation.htm

25. Osmosis Cell membrane Outside cell Inside cell High conc. of water molecules. Low conc. of water molecules.

26. Osmosis Cell membrane OSMOSIS Outside cell Inside cell High conc. of water molecules. Low conc. of water molecules.

27. Osmosis Cell membrane OSMOSIS Outside cell Inside cell EQUILIBRIUM. Equal water concentration on each side.

28. LOW HIGH + energy

31. Active Transport http://www.youtube.com/watch?v=1w10R9lv7eQ&feature=related • Movement of materials from LOWtoHIGH concentration • ENERGY IS NEEDED!

34. Let’s summarize: • Explain the differences between passive transport and active transport. • What is the difference between diffusion and osmosis? • When will diffusion stop? http://www.youtube.com/watch?v=1ZFqOvxXg9M

35. Review: Which process requires cellular energy? • diffusion 2. passive transport 3. active transport 4. osmosis

36. Sodium ions are pumped from a region of lower concentration to a region of higher concentration in the nerve cells of humans. This process is an example of • diffusion 2. osmosis • passive transport 4. active transport

37. The movement of materials from lower to higher concentration requiring energy in the form of ATP is called  • movement 2. diffusion  • active transport 4. cell division

38. The movement of materials from higher to lower concentration is called  • diffusion  2. active transport  • pinocytosis • 4. phagocytosis

39. Damage to which structure will most directly disrupt water balance within a single-celled organism? • ribosome 2. cell membrane 3. nucleus 4. chloroplast

40. The movement of water from an area of high concentration to an area of low concentration is known as • phagocytosis 2. osmosis 3. active transport 4. pinocytosis