Question

what type of substances can be brought into a cell through the cell membrane?
gaseous substances only
dissolved substances
solid substances only

Explanation:

The cell membrane allows various substances to pass through. Gases like oxygen and carbon - dioxide can diffuse across it. Dissolved substances such as ions and small molecules can also cross via different transport mechanisms like diffusion, facilitated diffusion, or active transport. Solid substances are generally not directly brought in across the cell membrane in their solid form; rather, they are broken down or dissolved first.

Answer:

dissolved substances