Osmosis

Question 1

Osmosis def

Answer 1

the diffusion of water molecules form an area of high water concentration
to an area of low water concentration
across a partially permeable membrane
down a water potential gradient

Question 2

what is water potential

what has the highest water potential

Answer 2

the potential( likelihood) of water moving into and out of a solution

Pure WOTAH

Question 3

what are the three different types of solution that can affect water potential

Answer 3

1) Hypotonic
2) Isotonic
3( Hypertonic

Question 4

Hypotonic

Answer 4

Hypotonic is when the water potential of the solution is HIGHER than the cell

• so net movement of water is INTO the cell
• cell bursts

In Plants:

• vacuole swells
• vacuole and cytoplasm are pushed against the cell wall
• cell becomes turgid

Question 5

Isotonic

Answer 5

when water passes into and out of the cell in equal amounts
- cell stays the same

SAME in plants

Question 6

Hyper tonic

Answer 6

solution has a lower water potential than the cell

• net movement of water molecules is out of the cell
• cell SHRINKS

In Plants:

• cell becomes flaccid
• cytoplasm and membrane PULL away from the cell wall
• this is called plamolysis