Question

the movement of oxygen molecules over time from one side of the semipermeable membrane to the other side is known as

oa osmosis

ob diffusion

oc plasmolysis

od active transport

Explanation:

Osmosis is the movement of water molecules across a semi - permeable membrane. Plasmolysis is the shrinkage of the protoplast of a plant cell due to water loss. Active transport requires energy to move substances against a concentration gradient. Diffusion is the movement of molecules (like oxygen here) from an area of higher concentration to an area of lower concentration across a semi - permeable membrane.

Answer:

B. diffusion