why-is-water-an-exception-to-the-rule-of-simple-diffusion-being-limited-to-non-p

Question

Why is water an exception to the rule of simple diffusion being limited to non-polar compounds?

Accepted Answer

Water is small enough to cross the membrane despite being polar.

Answer

Water requires ATP to move across membranes.

Answer

Water is non-polar and easily diffuses across membranes.

Answer

Water is actively transported across membranes.