movement through cells

Question 1

2 types of movement

Answer 1

passive and active

Question 2

passive

Answer 2

doesnt require energy

Question 3

active

Answer 3

requires energy

Question 4

diffusion def

Answer 4

spreading out particles so they are evenly distributed over surface

Question 5

what is concentration gradient

Answer 5

areas of high concentration moving to areas of low concentraton

Question 6

how to speed up rate of diffusion

Answer 6

more stuff to diffuse, greater gradient

Question 7

when do particles stop moving

Answer 7

equilibrium

Question 8

what can pass the lipid

Answer 8

small fat soluble

Question 9

e.g. of lipid pass

Answer 9

oxygen and carbon dioxide

Question 10

what is essential for diffusion

Answer 10

differnt levels on either side

Question 11

what substances can pass through lipid

Answer 11

oxygen and carbon dioxide

Question 12

are therre always unequal amounts of carbon dioxide and oxygen in cells

Answer 12

oxygen is being used and carbon dioxide is being produced

Question 13

oxygen in the cell, will have a concentration that is lower…

Answer 13

inside

Question 14

carbon dioxide in the cell will have a concentration that is lower

Answer 14

outside

Question 15

what typically moves through channel proteins

Answer 15

ions

Question 16

channel proteins are always open and moves molecules both side

Question 17

osmosis def

Answer 17

diffusion of water across a semi permiable membrane from a higher to lower concentration

Question 18

how does osmosis work to keep always flowing

Answer 18

solute is stuck in one side so water levels are never equal. water flows to the lower concentration.

Question 19

what type of movement is osmosis

Answer 19

passive