Respuesta :

Answer:

Passive transport definition is - the movement of substances (as by diffusion) across a cell membrane without the expenditure of energy.

Explanation:

Answer:

Passive transport is a kind of membrane transport in which chemicals are moved across cell membranes without the need of energy. Passive transport uses the second law of thermodynamics to drive the movement of substances across cell membranes rather than cellular energy, as active transport does.