Question

Which of the following will pass through a cell membrane most easily?(A) both CO2 and water will easily pass through CO2(B) a small nonpolar molecule proteins(C) large polar molecules(D) All of the answer choices are correct.

Answer 1

Answer:

Option (A).

Explanation:

Cell membrane or plasma membrane is made up of lipids and proteins with the small amount of carbohydrates are attached to it. This membrane maintains fluidity and separate cell's environment.

Small non polar and uncharged molecules can easily pass through the cell membrane by the process of diffusion. Carbon dioxide and water are small molecules that can easily pass through the membrane.

Thus, the correct answer is option (A).