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20 Feb 17 (Photosynthesis (How to get food (Autotroph: (organism that can…
20 Feb 17
Photosynthesis
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Energy comes from blue and red wavelengths of visible sunlight that are absorbed by pigments in the chloroplasts
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Stages
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calvin cycle
Carbon dioxided from atmostphere is brought together with an enzyme, RuBP (rubisco
resulting compound is energized with addition of electrons supplied by the first stage of photosynthesis and ATP
Photorespiration
when rubisco binds with oxygen rather than carbon dioxide, it undercuts photosynthesis
This problem increases as the termperature rises because as plants close their stomata to keep in moisture, they also keep out carbon dioxide.
In deserets plant stomata opens only at night, letting in a fixing carbon dioxide.
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