Osmosis

Question 1

Define osmosis

Answer 1

The diffusion of water from an area of high water potential to an area of low water potential across a partially permeable membrane

Question 2

The higher the water potential the higher the…..

Answer 2

Number of water molecules present and therefore the higher the water pressure

Question 3

What is pure waters water potential

Answer 3

0
All other values are negative

Question 4

What direction does water move in terms of water potential

Answer 4

Less negative ———> more negative

Question 5

What is a hypotonic solution

Answer 5

Water potential higher in solution then cell

Question 6

What is an isotonic solution

Answer 6

Water potential is equal in and out of cell

Question 7

What is a hypertonic solution

Answer 7

Water potential in the solution is less than in the cell

Question 8

What happens to an animal cell in a hypotonic cell

Answer 8

Swells and bursts

Question 9

What happens to an animal cell in a hypertonic solution

Answer 9

Shrinks

Question 10

What happens to a plant cell in a hypotonic solution

Answer 10

Protoplast (cell membrane) swells
Cell is turgid

Question 11

What happens to a plant cell in a isotonic solution

Answer 11

Cell is flaccid
Protoplast begins to pull away from cell wall

Question 12

What happens to a plant cell in a hypertonic solution

Answer 12

Protoplast shrinks
Plasmolysed Protoplast detached from cell wall

Question 13

Is cell wall fully or partially permeable

Answer 13

Fully

Question 14

What is in the gap between the cell wall and plasmolysed Protoplast

Answer 14

Sugar solution from the hypertonic solution