Passive Transport

Question 1

what is diffusion

Answer 1

un-aided movement of particles from a high concentration to a low concentration

Question 2

when does diffusion stop

Answer 2

when a equilibrium is reached

Question 3

what can diffuse across the plasma membrane (bilayer)

Answer 3

oxygen, carbon dioxide, water

Question 4

what is equilibrium?

Answer 4

when there is the same concentration of particles of on either side of the membrane

Question 5

what is a solute

Answer 5

a substance that can be dissolved

Question 6

what is a solvent

Answer 6

a substance in which a solute can dissolve in

Question 7

what is passive transport

Answer 7

transport that does not require energy

Question 8

is diffusion passive or active transport

Answer 8

passive

Question 9

is facilitated diffusion passive or active transport

Answer 9

passive

Question 10

is diffusion passive or active transport?

Answer 10

passive

Question 11

what is facilitated diffusion

Answer 11

substances that are helped across the cell membrane by carrier molecules

Question 12

what does facilitated diffusion transport

Answer 12

simple sugars, amino acids, charged ions & nutrients, nucleotides

Question 13

examples of solute

Answer 13

salt, glucose, ions, oxygen

Question 14

example of solvent

Answer 14

water

Question 15

What is osmosis

Answer 15

Diffusion involving water passing through a selectively permeable membrane

Question 16

How do you reach equilibrium in osmosis

Answer 16

Water moves to a higher concentration of solutes

Question 17

What is hypotonic solution

Answer 17

Where the water moves into the cell, the pressure builds and the cell can burst

Question 18

What is a hypertonic solution

Answer 18

Water flows out of the cell, the pressure drops and the cell becomes dehydrated and shrivels up

Question 19

What is an isotonic solution

Answer 19

Equilibrium, no change in cell, water moves in and out at the same rate