transport through the membrane

Question 1

definition of passive transport

Answer 1

• diffusion of a substance across a membrane with no energy required.
• high to low concentration
• semi-permeable: in front of membrane

Question 2

what are 3 passive ways?

Answer 2

diffusion, osmosis,and facilitated diffusion

Question 3

definition of diffusion

Answer 3

• high to low concentration
• molecule move without energy
• continue moving until they cover available space

Question 4

osmosis is ..?

Answer 4

water

Question 5

facilitated diffusion is…?

Answer 5

aided by protein

Question 6

3 forms of osmosis

Answer 6

hypertonic,hypotonic,and isotonic

Question 7

hypertonic is..?

Answer 7

to much salt than is needed

-water enters

Question 8

hypotonic is…?

Answer 8

not enough salt

-water exits

Question 9

isotonic is…?

Answer 9

concentration is in between

-equal amount of water enter and exit

Question 10

define active transport

Answer 10

movement against concentration gradient. require energy

Question 11

3 ways of active transport?

Answer 11

exocytosis, endocytosis, and sodium pump

Question 12

exocytosis is…?

Answer 12

secreting large molecules and substance out of the cell

Question 13

endocytosis is…?

Answer 13

taking in large substance

Question 14

sodium pump is..?

Answer 14

moving Na and K against (up) the concentration gradient.

Question 15

describe the movement of water across a cell membrane..

Answer 15

WATER CHASES SALT

net diffusion of water will go towards area with higher amount of cell