What is Osmosis

Osmosis is the movement of water molecules from an area of high concentration to an area of low concentration. This is done through a semi-permeable membrane. The aim is to have the same concentration of water molecules on each side. This is like if you have lots of people in one room and its very crowded and in the other room are not as many people. You want to be in the not so crowded room Between the rooms are lots of little doors to walk through. So you walk through one of the little doors to the other room. More people will walk through so that there are the same number of people in each room. This is osmosis. The people are the water molecules and the little doors are the semi-permeable membrane.

MG
Answered by Miranda G. Biology tutor

2358 Views

See similar Biology GCSE tutors

Related Biology GCSE answers

All answers ▸

How does the circulatory system work?


What are the differences between diffusion and active transport?


What changes occur in the body when you are too hot? (5 marks)


Name the components/organelles of both animal & plant cells. Give a brief description of their functions.


We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

MyTutor is part of the IXL family of brands:

© 2025 by IXL Learning