d2.3 water potential

Question 1

osmosis definition

Answer 1

passive net movement of water molecules from high water potential to lower water potential, through partially permeable membrane

Question 2

hypotonic solution + effects

Answer 2

• water concentration is higher
• water will move into cell
• plant cell- turgid
• animal cell- may burst

Question 3

hypertonic solution + effects

Answer 3

• water concentration is lower
• water moves out of cell
• cell becomes flaccid

Question 4

isotonic solution + effects

Answer 4

• equal amount of water concentration
• cell size remains the same

Question 5

y wont plant cells burst

Answer 5

cellulose provides structural support

Question 6

facilitated diffusion

Answer 6

passive net movement of particles from regions of high concentration to low concentration through a selectively permeable membrane facilitated by carrier proteins

Question 7

carrier proteins

Answer 7

integral globular proteins in the plasma membrane that allow some molecules to pass through

Question 8

channel proteins

Answer 8

• specific to their molecules
• determined by polar regions or charge on the proteins

Question 9

aquaporins

Answer 9

hole made of special proteins that allows water to go through

Question 10

water potential eq

Answer 10

solute potential + pressure potential

Question 11

water potential definition

Answer 11

measure of the potential energy per unit volume

Question 12

diffusion

Answer 12

passive net movement of molecules form regions of high concentration to low concentration until equilibrium is reached

Question 13

what molecules require facilitated diffusion

Answer 13

big + non-soluble