Question

the movement of molecules across a membrane that does not require cellular energy is called ______.
active transport
passive diffusion
facilitated diffusion
group - translocation transport

Explanation:

Active transport and group-translocation transport both require cellular energy to move molecules across a membrane. Facilitated diffusion is a type of passive transport, but the broad term for energy-independent membrane molecule movement is passive diffusion, which includes simple and facilitated diffusion as subsets.

Answer:

B. passive diffusion