1. Chapter 3 Part 2 Study guide

2. Question # 1 Think about the Carrot Lab. Draw a quick picture about how the water moved while the carrot was in the salt water cup.

3. Question # 1 Answer Think about the Carrot Lab. Draw a quick picture about how the water moved in the while the carrot was in the salt water cup. Answer-

4. Question # 2- 2 points What happened when we added a few drops of food coloring to the cup of water? How did the dye move through the water?

5. Question # 2 Answer What happened when we added a few drops of food coloring to the cup of water? ANSWER- Concentrated at the top of the glass. How did the dye move through the water? ANSWER- Moved downward until it DIFFUSED evenly throughout the glass

6. Question # 3 When put in certain solutions, an animal cell could burst. What type of solution would cause this?

7. Question # 3 Answer When put in certain solutions, an animal cell could burst. What type of solution would cause this? Answer- Hypotonic

8. Question # 4 Explain the main difference between passive and active transport.

9. Question # 4 Answer Explain the main difference between passive and active transport. ANSWER- Passive transport requires NO energy and moves molecules from high to low concentration. Active Transport REQUIRES energy and moves molecules against the concentration gradient.

10. Question # 5 What occurs when a cell is put in an isotonic solution?

11. Question # 5 Answer What occurs when a cell is put in an isotonic solution? ANSWER- Molecules move across the cell membrane in a process called DYNAMIC EQUILIBRIUM. If 1 molecule moves in, 1 moves out. If 3 move, 3 move out and so on.

12. Question # 6 Why do plants wilt in the summer?

13. Question # 6 Answer Why do plants wilt in the summer? ANSWER- There is a greater concentration of water inside plants than outside, so in effort to reach equilibrium the plant moves water out of the plant cells causing the cells to not be as stable.

14. Question # 7 What organelles are involved in endocytosis?

15. Question # 7 Answer What organelles are involved in endocytosis? ANSWER- The cell membrane folds inward creating a VESICLE that then fuses with a LYSOSOME, which helps to break down the vesicle and it’s contents.

16. Question # 8- 2 points In Day Two of the Egg Lab we put the egg in corn syrup, what happened to the egg? What type of solution is Corn Syrup?

17. Question # 8 Answer In Day Two of the Egg Lab we put the egg in corn syrup, what happened to the egg? ANSWER- Water moved out of the egg bc of the difference in concentration causing the egg to shrink. What type of solution is Corn Syrup? ANSWER- HYPERTONIC

18. Question # 9- 2 points What happened when the egg was placed in distilled water? What type of solution was the distilled water?

19. Question # 9- 2 Answer What happened when the egg was placed in distilled water? ANSWER- Water moved into the egg bc of the difference in concentration causing the egg to grow. What type of solution was the distilled water? ANSWER- HYPOTONIC

20. Question # 10 There are two forms of endocytosis, what are they?

21. Question # 10 Answer There are two forms of endocytosis, what are they? ANSWER- Phagocytosis and Pinocytosis

22. Question # 11 What is the main difference between Pinocytosis and Phagocytosis?

23. Question # 11 Answer What is the main difference between Pinocytosis and Phagocytosis? ANSWER- Pinocytosis- process of taking liquid into the cell by engulfing it in the membrane. Phagocytosis- Type of endocytosis where cells engulf large particle. Literally means “Cell Eating”

24. Question # 12 How do nerve cells use active transport in order to function correctly?

25. Question # 12 Answer How do nerve cells use active transport in order to function correctly? ANSWER- Nerve cells require a higher concentration of potassium than sodium, so it pumps 3 Na atoms out for every 2 K atoms that enter the cell.

26. Question # 13- 2 Points What type of white blood cell aids the body in fighting infections? How does this process occur?

27. Question # 13- 2 Answer What type of white blood cell aids the body in fighting infections? ANSWER- Macrophages How does this process occur? ANSWER- Occurs through the process of Phagocytosis

28. Question # 14 How do transport proteins that are pumps differ from those that are channels?

29. Question # 14 Answer How do transport proteins that are pumps differ from those that are channels? ANSWER- Pumps require energy to move molecules against a concentration gradient and can change shape upon binding. Channels do not change shape do not require energy.

30. Question # 15 Explain the difference between diffusion and osmosis.

31. Question # 15 Answer Explain the difference between diffusion and osmosis. ANSWER- Osmosis is the movement of only water molecules from an area of high to low concentration. Diffusion is the movement of fluid or gas from an area of high to low concentration.

32. Tie Breaker!!!!! W hat was the score of the Varsity football game vs McKinley at Halftime??

33. Tie Breaker!!!!! W hat was the score of the Varsity football game vs McKinley at Halftime?? ANSWER- 35-0 PERRY!!!