Topic 5 Flashcards
Where does the light- dependant and light independent reaction occur in plants ?
Light dependant- in the thylakoids of chloroplast
Light independent- storms of plants
Explain the role of light in photo ionisation
Chlorophyll molecules absorb energy from photons of light.
This ‘excites’ 2 electrons (raises them to a higher energy level ) , causing them to be released from the chlorophyll
What are the two main stages involved in production of ATP in light dependant reaction ?
Electron transfer chain
What happens in the electron transfer chain ?
- electron released from chlorophyll
-move down a series of carrier proteins embedded in thylakoid membrane
- undergo a series of redox reactions
-which releases energy