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Photosynthesis Index

The light dependant reaction
The light dependant reaction : Summary
Chlorophyll in the chloroplast
Chlorophyll and photosynthesis
Carbon fixation : The light independent reaction
Photosynthesis overview

Topic Chapters Index

 

PHOTOSYNTHESIS

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Classifying organisms according to their carbon source and energy supplies

Type of Organism

Carbon Source

Energy Source

Electron Donors

Examples

Photolithotrophs

CO2

Light

Inorganic compounds

(H2O, H2S, S)

Green plants, photosynthetic protoctists, blue-greens, photosynthetic bacteria

Photoorganotrophs

Organic compounds

Light

Organic compounds

Non-sulphur purple bacteria

Chemolithotrophs

CO2

Redox reactions

Inorganic compounds

(H2, S, H2S, Fe2+, NH3)

Hydrogen, sulphur, iron and denitrifying bacteria

Chemoorganotrophs

Organic compounds

Redox reactions

Organic compounds

(e.g. Glucose)

Animals, fungi, non-photosynthetic protoctists, saprophytic and parasitic bacteria

 

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