How does concentration gradient affect the rate of diffusion?

Diffusion is the movement of a substance from areas of high concentration to areas of low concentration, down a concentration gradient. As a result of diffusion, substances may move in and out of cells, across the cell membrane. The substance moves from a highly concentrated area to a lowly concentrated area. For instance, oxygen diffuses from alveoli to the blood because there is a lower concentration of oxygen in the blood than in the alveoli. The greater the concentration gradient, the greater the rate of diffusion.

RB
Answered by Rachel B. Biology tutor

24613 Views

See similar Biology GCSE tutors

Related Biology GCSE answers

All answers ▸

Describe and explain the lock and key model of enzyme action, and how denaturation affects this.


Describe how blood vessels are able to assist in the control of body temperature.


What is an enzyme?


Why does as an excess of nutrients such as nitrates lead to animal death in bodies of freshwater?


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences