Question

which type of transport requires energy input from the cell?
active transport
osmosis
facilitated diffusion
simple diffusion

Explanation:

Active transport moves substances against their concentration gradient, requiring energy (usually ATP) from the cell. Osmosis is the diffusion of water across a semi - permeable membrane, which is a passive process. Facilitated diffusion uses transport proteins to move substances down their concentration gradient without energy input. Simple diffusion is the movement of small, non - polar substances down their concentration gradient without energy.

Answer:

active transport