what-characteristic-of-biological-membranes-allows-them-to-act-as-barriers-to-di

Question

What characteristic of biological membranes allows them to act as barriers to diffusion?

Accepted Answer

They are selectively permeable, allowing only certain molecules to cross.

Answer

They are completely impermeable to all molecules.

Answer

They are permeable only to large, charged molecules.

Answer

They allow all molecules to cross freely without any restriction.