B4.4-5 Active Transport & Co Transport Flashcards
(4 cards)
1
Q
What is active transport
A
Movement of particles against a concentration gradient using ATP
2
Q
How does active transport of 1 molecule occur
A
ATP and particle bind to their respective sites
ATP hydrolysed into ADP + Pi
Pi releases energy causing transport protein to change shape, particle forced across protein
3
Q
Additional steps when active cotransport of 2 particles
A
Second particle binds to site
Pi is released
Transport protein reverts to original shape, forcing particle across membrane
4
Q
A
