Osmosis

Question 1

What is osmosis

Answer 1

Diffusion of water; net movement of water molecules from high to low concentration through a partially permeable membrane

Question 2

What is water potential

Answer 2

The tendency of water molecules in a system to move.

Question 3

How does water potential impact osmosis

Answer 3

net movement of water by osmosis, determined by differences in water potential between two solutions connected by a partially permeable membrane

Question 4

What is water potential like in an isotonic animal cell

Answer 4

WP outside cell is same as the cell cytoplasm - no net movement of water

Question 5

What is water potential like in an hypertonic animal cell

Answer 5

WP outside the cell is lower than cell cytoplasm, water has moved out of the cell

Question 6

What does it mean if water has moved out of the cell

Answer 6

Cell becomes crenated as cytoplasm pulls away from cell membrane

Question 7

What is water potential like in an hypotonic animal cell

Answer 7

WP outside cell higher than inside cell, water has entered the cell

Question 8

What happens if water gets in cell

Answer 8

Lysis occurs (burst) as cell has no wall