9.2

Question 1

hypotonic

Answer 1

more water than solute

Question 2

hypertonic

Answer 2

more solute than water

Question 3

isotonic

Answer 3

equal amounts of solute to water

Question 4

which direction is concentration likely to go

Answer 4

toward the more hypertonic solution

Question 5

simple diffusion vs facilitated diffusion

Answer 5

simple diffusion lets certain molecules pass the membrane (which is made by phospholipids) . Only small and nonpolar things can pass. facilitated diffusion uses proteins to let other things pass the membrane. No energy is required and it is specific. substances still go from high to low concentration.

Question 6

why is it important to have small cells

Answer 6

because it has the most efficient SA/V ratio

Question 7

What is active transport

Answer 7

when cells need to move molecules against concentration gradient

Question 8

exocytosis

Answer 8

moving big things out side cell using vesicles

Question 9

endocytosis

Answer 9

moving big things inside the cell using vesicles