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Photosynthesis Chapter 10. Photosynthesis occurs in the chloroplast. Chloroplast = type of plastid. Proplastid Chloroplasts Chromoplasts Amyloplasts. When photosynthetic pigments absorb photons, four things can happen:. Photon re-emission (fluorescence) Heat generation - PowerPoint PPT Presentation
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Photosynthesis occurs in the chloroplast.
Chloroplast = type of plastid
Proplastid
ChloroplastsChromoplastsAmyloplasts
When photosynthetic pigments absorb photons, four things can happen:
Photon re-emission (fluorescence)
Heat generation
Energy transfer (resonance transfer)
Photochemistry
Pigments absorb across specific wavelengths.
Multiple pigments allow more light to be harvested.
Absorption Spectrum
Two types of antenna complexes with distinct reaction centers:
RC absorbs at 700 nm (PS I)
RC absorbs at 680 nm (PS II)
PS IInvolved with the reduction of NADPH for use in carbohydrate synthesis
PS IIInvolved with ATP synthesis for use in carbohydrate production
Two Distinct Photosystems