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10 Cards in this Set
- Front
- Back
what occurs (over all) in carbon-fixation reactions?
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-ATP and NADPH reduce carbon to a simple sugar
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what molecule is present at the start and end of the calvin cycle?
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ribulose 1,5-bispophate (RuBP)
-five carbon sugar |
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First stage of calvin cycle: fixation
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3 CO2 fixes to 3 RuBP making 6 molecules PGA (three carbon atomss)
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Second stage of calvin cycle: reducdion
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-6 PGA reduces to 6 PGAL
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Thrid stage of calvin cycle: regeneration of acceptor
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-five of the six PGALs are ussed to make RuBP
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What is the net gain from the calvin cycle?
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one extra molecule of PGAL
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what is PGAL?
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glyceraldehyde 3-phosphate
Three carbon sugar starting point of sugars |
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How many turns of the cycle it takes to make one net PGAL?
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three turns
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What gets consumed during three cycles?
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3 CO2
9 ATP 6 NADPH |
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what is Rubisco?
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the enzyme that catalys CO2 reaction with RuBP
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