Question

difference between filtration and active transport

Answer 1

Filtration-Filtration is the movement of water and solute molecules down the concentration gradient

Active Transport-Active transport is the movement of molecules across a cell membrane in the direction against their concentration gradient 

Answer 2

Active transport is a method by which cell transports materials against the concentration gradient by spending energy.
were as 
Filtiration is a movement of water molecules down the concentration gradient.