Osmosis

Question 1

What is the definition of osmosis?

Answer 1

The net movement of water particles from an area of high water potential to an area of low water potential across a partially permeable membrane

Question 2

A diluted solution has a [blank] water potential

fill in the blank

Answer 2

High

Question 3

A concentrated solution has a [blank] water potential

Answer 3

low

Question 4

What are the units of water potential?

Answer 4

Kilopascals (kPa)

Question 5

What is the highest possible value for water potential?

Answer 5

0 kPa

Question 6

Is osmosis an active of passive process?

Answer 6

Passive

Question 7

What happens to an animal cell when there is a low water potential outside the cell

Answer 7

1. Water leaves the cell via osmosis
2. The cell shrinks and becomes crenated

1. water leavs/enters the cell
2. What happens as a result of this

Question 8

What happens to an animal cell when there is a high water potential outside of the cell?

Answer 8

1. Water enters the cell via osmosis
2. The cell swells and becomes turgid, eventually bursting (lysis)

Question 9

What happens to a plant cell when there is a high water potential outside of the cell?

Answer 9

1. Water enters the cell via osmosis
2. The cell swells and becomes turgid

Question 10

What happens to a plant cell when there is a low water potential outside of the cell?

Answer 10

1. Water leaves the cell via osmosis
2. The cell becomes flaccid

Question 11

What happens to a plant cell when there is a very low water potential outside of the cell?

Answer 11

1. Water leaves the cell via osmosis
2. The cell becomes plasmolysed and the cytoplasm is pulled away from the cell wall