Question

Which of the following is an example of facilitated diffusion?
Choose 1 answer:
Choose 1 answer:

(Choice A)
A
Water moves out of the cell, passing through channel proteins in the cell membrane

(Choice B)
B
Hydrogen ions are pumped out of the cell against their concentration gradient

(Choice C)
C
Sugar is transported into the cell via an energy-consuming process

(Choice D)
D
Carbon dioxide exits the cell, passing directly through the cell membrane

Answer 1

Answer:

hydrogen ions are pumped out of the cell against their concentration gradient. (most probably)

Answer 2

Answer:

choice A

The channels proteins may be symport,uniport and antiport

faccilated diffusion no need of any kind of energy