Osmosis and Tonicity

Question 1

Word: Water movements across a membrane

Answer 1

Osmosis

Question 2

Condition that might cause red blood cells to burst (cytolysis)

Answer 2

Hypotonic

Question 3

Condition that might cause plant cell to lose turgor pressure (plasmolysis); Water leaves due to high solutes, cells shrink

Answer 3

Hypertonic

Question 4

Condition that might cause a plant cells to have good turgor pressure and be swollen

Answer 4

Hypotonic

Question 5

H2O only entering the cell; Lysed

Answer 5

Hypotonic

Question 6

H2O only leaving the cell; Shriveled

Answer 6

Hypertonic

Question 7

What is diffusion?

Answer 7

Molecules spreading out from high -> to low concentration

Question 8

What is active transport?

Answer 8

Not natural; molecules moving from low to high concentration. Against concentration gradient/ not natural again

Question 9

What does molarity (M) refer to?

Answer 9

Moles/Liter

Question 10

If a solution has a higher molarity, what does that tell us?

Answer 10

The cell will be hypertonic

Question 11

What would you expect to happen to the potato in the 1 M solution of sucrose?

Answer 11

It’ll shrink the most

Question 12

What would you expect to happen to the potato in the 0.0 M solution of sucrose?

Answer 12

It’ll swell the most

Question 13

More water can enter the cells in a lower molarity solution, and in the higher molarity solution, the
water leaves the cells more.

Answer 13

True