Question

multiple choice question lipid ____ substances diffuse easily through the plasma membrane, while lipid - ____ substances must use channel proteins. soluble; insoluble insoluble; soluble

Explanation:

The plasma membrane is composed of a lipid - bilayer. Lipid - soluble substances can easily pass through the non - polar lipid environment of the plasma membrane, while lipid - insoluble substances, which are often polar or charged, cannot cross the non - polar lipid bilayer and must use channel proteins for transport.

Answer:

A. soluble; insoluble