7.3- Cell Transport

Question 1

Diffusion

Answer 1

process by which particles move from areas of high concentration to an area of low concentration

Question 2

Facilitated Diffusion

Answer 2

process by which molecules cannot directly cross the membrane but can pass through special protein channels

Question 3

Aquaporin

Answer 3

water channel proteins in the membrane which allow water to pass right through

Question 4

Osmosis

Answer 4

the diffusion of water through a selective permeable membrane

Question 5

Isotonic

Answer 5

“same strength” - concentrations of two liquids are equal

Question 6

Hypertonic

Answer 6

“above strength” - the concentration that is higher than the other

Question 7

Hypotonic

Answer 7

“below strength” - the concentration that is lower than the other

Question 8

Osmotic Pressure

Answer 8

a force that will create the net movement of water out of or into a cell driven by differences in solute concentration

Question 9

what is passive transport?

Answer 9

the movement of materials across a cell membrane without using cellular energy

Question 10

What is active transport?

Answer 10

the movement of materials against a concentration difference that requires the use of cellular energy

Question 11

endocytosis

Answer 11

“cell drinking”- process by which material is taken into the cell by means of infolding/pocketing of the cell membrane

Question 12

exocytosis

Answer 12

release of large amount of material outside of the cell by fusing with either vacuole or vessicle and actively dumping out contents