What is the difference between osmosis and diffusion?

Both osmosis and diffusion are processes that involve the movement of molecules from an area of high concentration to an area of low concentration. Neither process requires energy.
Osmosis and diffusion differ in the folowing ways:
- Osmosis requires a partially permeable membrane and is the movement of water molecules only.
- Diffusion does not require a partially permeable membrane and is the movement of any gas or liquid molecules.

HM

Related Biology GCSE answers

All answers ▸

i) Briefly explain the difference between anaerobic and aerobic respiration (2). ii) Which of these reactions produce more energy and briefly describe why?(2)


What's the difference between prokaryotic cells and eukaryotic cells


Describe how ions, water and sugar are obtained and transported through plants. In your answer you should refer to materials moving upwards and downwards in a plant. (6 marks)


What is the equation for photosynthesis and what is the product used for?