What does transport mean in biology?

What does transport mean in biology?

I'm going to assume you mean cellular transport, it is the general term for the processed which materials enter or leave a cell, or move within the cell's cytoplasm.

Passive transport is a kind of transport by which ions or molecules move along a concentration gradient, which means movement from an area of higher concentration to an area of lower concentration. Examples of passive transport include diffusion, filtration, and osmosis.