Question

Q.4. Which of the following substances cannot pass through the cell membranes by simple diffusion? a) Glucose b) Oxygen c) Carbon dioxide d) Water​

Answer 1

The substance that cannot pass through the cell membranes by simple diffusion is d) Water.

Explanation:

Simple diffusion is a type of passive transport that allows substances to move from an area of higher concentration to an area of lower concentration. Small, uncharged molecules, such as oxygen, carbon dioxide, and glucose, can pass through the cell membranes by simple diffusion because they are small enough to fit through the pores in the membrane.

Water, on the other hand, is too large to pass through the pores in the cell membrane by simple diffusion. Instead, it must pass through the membrane by other means, such as osmosis or facilitated diffusion.

Therefore, the substance that cannot pass through the cell membranes by simple diffusion is d) Water.

Hope This Helps:)

Answer 2

A is the correct answer