Question

Which statement explains why oxygen molecules easily diffuse across a cell

membrane while glucose molecules do not?
A. Glucose is too big to pass through.
B. Oxygen is a gas.
C. Oxygen is polar.
O D. Protein membranes block glucose.

Answer 1

A. Glucose is too big to pass through.

Step-by-step explanation:

Only small hydrophobic molecules such as oxygen can go through the hydrophobic interior of the phospholipid bilayer.