Question

Which of the following is an example of facilitated diffusion?

A. Sugar is transported into the cell via an energy-consuming process
B. Hydrogen ions are pumped out of the cell against their concentration gradient
C. Carbon dioxide exits the cell, passing directly through the cell membrane
D. Water moves out of the cell, passing through channel proteins in the cell membrane

Answer 1

Answer: Water moves out of the cell, passing through channel proteins in the cell membrane

Explanation: The channels proteins may be symport, uniport and antiport

faccilated diffusion no need of any kind of energy.

Answer 2

D. which is also known as osmosis a form of facilitated diffusion (doesn't require energy)