The light-dependent reactions Page

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Presentation transcript:

The light-dependent reactions Page 213-225 Photosynthesis The light-dependent reactions Page 213-225

https://www.youtube.com/watch?v=mYbMPwmwx88 Photosynthesis

Chloroplasts

Light-dependent reactions Role of the thylakoid and it’s membrane What is the relationship between photosystems, chlorophylls, and caretonoids? Light-dependent reactions

The electrons in the double bonds in the ring structure can accept photons of energy and become excited Chlorophyll

Also have electrons capable of being excited Carotenoids

Absorption Spectra

Passing the energy Antenna Complexes

Light-dependent reactions

Light-dependent reactions

Light-dependent reactions

Light-dependent reactions What to know: The general order of complexes that the electron passes through What happens at each photosystem Compare and contrast each photosystem. Light-dependent reactions

Light-dependent reactions Review of what has occurred so far: Electron is passed along a chain of carriers, absorbing two photons of energy before ending up on NADP+ Protons (H+) build up in the thylakoid lumen Light-dependent reactions

Light-Dependent reactions Proton gradient: Where does it build up and where does it come from? Light-Dependent reactions

Light-dependent reactions ADP + Pi  ATP Light-dependent reactions

Light-Dependent Reactions Energy diagram Light-Dependent Reactions

Light-Dependent Reactions Cyclic Electron Transport Modification Why? Light-Dependent Reactions

Light-Dependent Reactions