Describe the types of movement of substances across a partially permeable membrane

Facilitated diffusion - the movement of substances down a concentration gradient via a membrane protein.
Active transport - the movement of substances against a concentration gradient which requires energy/ATP using a carrier protein.
Osmosis - the movement of water down a water potential gradient.

RT
Answered by Rachael T. Biology tutor

3377 Views

See similar Biology A Level tutors

Related Biology A Level answers

All answers ▸

What are some differences between RNA and DNA?


How does a nerve transmit impulses?


How does an electrical impulse travel the gap between two nerves?


How does the polymerase chain reaction (PCR) work?


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