cell biology - transport mechanisms

Question 1

an ion moving directly through a cell membrane is an example of-
a) osmosis
b) simple diffusion
c) facilitated diffusion
d) active transport

Answer 1

b) simple diffusion

Question 2

which of the following are more concentrated on the inside of the cell? select all that apply
a) calcium
b) sodium
c) chloride
d) potassium

Answer 2

d) potassium

Question 3

water being pulled across a membrane by ions is an example of-
a) facilitated diffusion
b) active transport
c) simple diffusion
d) osmosis

Answer 3

d) osmosis

Question 4

an ion that moves down its gradient and through a protein is an example of-
a) active transport
b) simple diffusion
c) osmosis
d) facilitated diffusion

Answer 4

d) facilitated diffusion

Question 5

where does the energy come from that allows ions to move via active transport?
a) ATP
b) concentration gradient
c) protein pump

Answer 5

a) ATP