Light Dependent Reactions
- Created by: Jelena
- Created on: 21-04-13 20:52
Fullscreen
- Light hits the plant
- Photons excite the electrons in Photosystem II
- The electrons enter the ETC
- They go to a series of electron carriers: PQ, b6-f, and Pc
- Pc passes the electrons to Photosystem I
- Photolysis occurs as this is happening! --> Water splits apart into two electrons, two protons, and one oxygen atom
- Two oxygen atoms become an O2 molecule and exit as a waste product
- The two electrons replace the electrons lost
- The protons are pumped by the thylakoid membrane and accumulate inside the thylakoid, so there are more protons inside the thylakoid than outside
- The thylakoid membrane is not permeable to protons
- This causes an electrochemical gradient, AKA a concentration gradient…
Comments
No comments have yet been made