The Student Room Group
Uni students - Complete our survey >>
Uni students - Complete our survey >>
Uni students - Complete our survey >>

This discussion is now closed.

Check out other Related discussions

Active/Assisted transport across the cell membrane.

Can anyone explain this? Text books don't seem to help it stick, it's a difficult concept :mad:
Reply 1
Avatar for Jez_249
Jez_249
Oh right, well, Active Transport requires ATP to move whatever it is you want across the membrane againsts the concentration gradient
Facilitated/Assisted Transport uses channel proteins that have a complementary binding site to tthe ion or whatever thingymajiggy you want to transport and doesnt use ATP and acts down a conentration gradient
Reply 2
Avatar for Kinkerz
Kinkerz
15
Jez_249
Oh right, well, Active Transport requires ATP to move whatever it is you want across the membrane againsts the concentration gradient
Facilitated/Assisted Transport uses channel proteins that have a complementary binding site to tthe ion or whatever thingymajiggy you want to transport and doesnt use ATP and acts down a conentration gradient


Facilitated diffusion involves two different types of channel proteins: carrier proteins (bind to a specific molecule on one side of the membrane, and then change shape to release that molecule on the other side); and ions channels (these are opened and closed to regulate the flow of ions)

Active transport also uses channel proteins.

Other than that it seems you have it down...

Related discussions

Latest

Trending

Trending

Articles for you