Question

the movement of small, nonpolar molecules such as oxygen across the cell membrane is an example of which type
oa active
ob cotransport
oc diffusion
od osmosis

Explanation:

Diffusion is the passive movement of small, non - polar molecules (like oxygen) from an area of higher concentration to an area of lower concentration across a cell membrane. Active transport requires energy. Cotransport involves the movement of two substances together. Osmosis is the movement of water molecules.

Answer:

C. diffusion