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The Calvin Cycle

The Calvin Cycle. Section 6.2. Carbon Fixation by the Calvin Cycle. Second set of reaction in photosynthesis involves a biochemical pathway known as the Calvin Cycle Pathway produces organic compounds, using energy stored in ATP and NADPH during the light reactions Named after Melvin Calvin.

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The Calvin Cycle

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  1. The Calvin Cycle Section 6.2

  2. Carbon Fixation by the Calvin Cycle • Second set of reaction in photosynthesis involves a biochemical pathway known as the Calvin Cycle • Pathway produces organic compounds, using energy stored in ATP and NADPH during the light reactions • Named after Melvin Calvin

  3. Carbon Fixation by the Calvin Cycle • Atoms from CO2 are bonded or “fixed” into organic compounds • Incorporation of CO2 into organic compounds is known as carbon fixation

  4. Calvin Cycle’s 3 steps

  5. 3 major steps to Calvin Cycle STEP 1: • Takes in CO2 , makes PGA

  6. STEP 2: • PGA is converted into another three-carbon molecule called PGAL • In addition to PGAL, these reactions produce ADP, NADP+ and phosphate

  7. STEP 3: • PGAL converts to RuBP • Makes ADP. • Cycle repeats itself.

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