Honors Review Packet - Solutions

Enjoy everyone - sorry for getting these up so late.

Andy the Amoeba Questions:
1. Passive transport, simple diffusion
2. active transport, endocytosis (specifically phagocytosis!)
3. active transport, transport proteins
4. passive transport, simple diffusion OR facilitated diffusion (water can enter the cell membrane both ways)
5. active transport, endocytosis (pinocytosis since it is bringing fluid in through a vesicle.)

Paula the Protein: The E! Hollywood Story:

The correct order is: G, F, B, D, C, E, A

Page 2:
pictures in order from left to right: hypotonic, hypertonic, isotonic

Fill in the blanks:
hypertonic means there is a GREATER concentration of solute molecules
OUTSIDE the cell than inside.
hypotonic means there is a LOWER concentration of solute molecules
OUTSIDE the cell than inside.
isotonic hypertonic means there is the SAME concentration of solute molecules
OUTSIDE the cell than inside.

The pressure inside a plant cell caused by water pushing against the cell wall is OSMOTIC PRESSURE.

Swelling and bursting of cells is called CYTOLYSIS. It happens when cells are placed in a solution that is HYPOTONIC to the cell.

Placing cells in a hypotonic solution causes the osmotic pressure to INCREASE.

The image to the right is what happens when the cell is placed in a hypertonic solution.

When water leaves the plant cell, the osmotic pressure decreases.

The shrinking of animal cells in a hypertonic solution is called PLASMOLYSIS.

Cells stay the same size in an ISOTONIC solution because the same amount of water is entering and leaving.

Multiple Choice - the questions aren't numbered, but adding numbers will make this easier. My apologies :)

1. C (solute)
2. B (down the concentration gradient)
3. D (equilibrium)
4. C (osmosis)
5. A (active)
6. B (facilitated diffusion)
7. C (mitochondria)
8. B (active)
9. E (endocytosis)
10.C (phagocytosis)
11. C(integral)
12. D (phagocytosis)
13. A (pinocytosis)
14. D (exocytosis)
15. D (osmotic pressure)
16. A (move into the cell)
17. B (high concentration to low concentration)
18. C (diffusion)

Fill in the Blank Questions:
1. energy
2. ATP
3. exocytosis
4. diffusion
5. mitochondria
6. osmosis
7. vesicle
8. pinocytosis
9. passive
10. facilitated
11. carrier
12. isotonic
13. hypertonic
14. gradient
15. active
16. hypotonic
17. sodium-potassium pump
18. endocytosis
19. down
20. osmotic
22. phagocytosis
23. cytolysis
24. integral
25. ion channels

Which solution has higher concentration of solute?
solution A is more concentrated - The reason is NOT because there is more solute! Instead, the reason is that the mean distance between particles is less in solution A than in B.

Since the concentration of solute on the right side is higher, this means water will diffuse to the right side from the left side. As a result, the water on the right side will rise.

Call/email/text with questions, folks. I'll be functional by 7:40 tomorrow morning if you want to check in with me before class begins.