7.3 passive transport

Question 1

what causes diffusion

Answer 1

thermal motion energy

heat

Question 2

passive transport

Answer 2

doesn’t require energy to transport stuff

• facilitated diffusion
• diffusion
• osmosis

Question 3

concentration gradient

Answer 3

potential energy

Question 4

diffusion of water across electively permeable membrane

Answer 4

osmosis

Question 5

tonicity

Answer 5

the ability of a solution to cause a cell to gain/lose water

Question 6

isotonic

Answer 6

no net movement of water

Question 7

hypertonic

Answer 7

loses water to environment and shrivels

Question 8

hypotonic

Answer 8

water enters the cell and it lyses (bursts)

Question 9

osmoregulation

Answer 9

control of water balance

Question 10

rigid cell walls and tonicity

Answer 10

rigid cell walls help cells tolerate excessive water changes
-the relatively inelastic wall exerts a back pressure on the cell that opposes further water uptake

Question 11

cels Paramecium adaptation

Answer 11

• lives in hypotonic collation (pond water)

- has a contractile vacuole that pumps water out as fast as it enters by osmosis

Question 12

animal cell in a hypotonic solution

Answer 12

lysed

Question 13

animal cell in an hypertonic solution

Answer 13

shriveled

Question 14

plant cell in a hypotonic solution

Answer 14

turgid

Question 15

plant cell in a isotonic slution

Answer 15

flaccid

Question 16

plant cell in a hypertonic solution

Answer 16

plasmolyzed