Biology:Osmosis/Diffusion

Question 1

diffusion

Answer 1

random movement of particles of a solute from an area of higher concentration to an area of lower concentration

Question 2

when does diffusion stop

Answer 2

equilibrium-when the concentrations across a membrane are equal

Question 3

What is the rate of transport dependent on

Answer 3

if the material is solid, liquid, or gas
size of molecules
temperature

Question 4

why does osmosis occur

Answer 4

water will move to where there is a greater amount of solute because there is less water there

Question 5

isotonic solution

Answer 5

concentration of solute inside and outside the cell is same

Question 6

isotonic (5)

Answer 6

water in=water out
no net movement of water
molecules in equilibrium
normal state for animals cells
cell in homeostasis

Question 7

hypotonic solution

Answer 7

concentration of solute is lower outside the cell the inside

Question 8

hypotonic(2)

Answer 8

have more water outside so water moves in

increase in pressure

Question 9

turgor pressure

Answer 9

increase in pressure in plant cells from a hypotonic solution
gives plant rigidity

Question 10

osmotic pressure

Answer 10

increase in pressure in animals cells from a hypotonic solution
could causes cell to swell or even burst

Question 11

hypertonic solution

Answer 11

concentration of solute is higher outside the cell than inside the cell

Question 12

plasmolysis

Answer 12

drop in turgor or osmotic pressure

causes animal cells to shrivel and plants to wilt

Question 13

what does active transport require

Answer 13

energy in the form of ATP

uses transport/carrier proteins embedded in the plasma membrane

Question 14

endocytosis

Answer 14

takes material into cell through cell membrane and then puts into vacuole

Question 15

exocytosis

Answer 15

vacuole fuses with cell membrane forcing contents out of cell