Fiehn BIS103 lecture 8_fall 2010

Fiehn BIS103 lecture 8_fall 2010 - Synthesis of...

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1 Synthesis of Carbohydrates and Gluconeogenesis Plants can generate glucose from fatty acids via the glyoxylate shunt …animals can’t
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2 Plants do photosynthesis and net fixation of CO 2 Further reading: Heldt Plant Biochemistry Lehninger CO 2 + H 2 O b (CH 2 O) + O 2 light Light reactions 2 H 2 O b O 2 + [H . ] light Dark reactions [H . ] + CO 2 b (CH 2 O) + H 2 O The chloroplast harvests light energy to produce ATP
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3 Absorbs photons (light quanta, h ν ) at ~630-670 nm Chloroplasts contain chlorophyll to harvest photons Chlorophyll a+b absorb in the red region and appear green
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4 Other pigments (e.g. carotenoids) absorb at different wavelengths and help harvesting photons Other pigments (e.g. carotenoids) absorb at different wavelengths and help harvesting photons
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5
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6 Photosystem I and II turn light energy into NADPH ! ! These photons trigger electron excitations which are harnessed in photosystem I and II and used in a similar way like in ETC to produce ATP
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7 These photons trigger electron excitations which are
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This note was uploaded on 01/08/2011 for the course BIS 103 taught by Professor Abel during the Winter '08 term at UC Davis.

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Fiehn BIS103 lecture 8_fall 2010 - Synthesis of...

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