Question

question 10 of 25 which statement explains why oxygen molecules easily diffuse across a cell membrane while glucose molecules do not? a protein membranes block glucose. b oxygen is a gas. c glucose is too big to pass through. d oxygen is polar.

Explanation:

Cell membranes are semi - permeable. Oxygen is small and non - polar, easily diffusing. Glucose is a larger molecule and cannot freely diffuse across the lipid - bilayer of the cell membrane without the help of transport proteins.

Answer:

C. Glucose is too big to pass through.