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BIOS 2011 Lab 2 Photosynthesis

Plants then are autotrophs and were it not for

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Unformatted text preview: and trap light energy from the sun to synthesize their own food. Plants, then, are autotrophs, and were it not for their ability to convert light energy into chemical energy, we heterotrophs simply would not exist. The overall reaction of the carbon cycle can be summed up as: CO2 + H2O ⇌ (CH2O) + O2 photosynthesis ⇒ ⇐ respiration The Light and Dark Reactions Photosynthesis is usually described in two parts: the light reactions and the dark reactions. The dark reactions are involved with carbon fixation. They utilize the products of the light reactions to "fix" carbon dioxide into carbohydrates and other cellular materials. This exercise is focused strictly on the light reactions; as such, the discussion will confine itself to an illumination of these reactions and their consequences....
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