CO2 diffuses into the chloroplast and combines with RuBP to form a 6-Carbon sugar. The 6-carbon sugar immediately splits into 2 molecules of PGA. The PGA then takes an H from NADPH and a P from ATP and becomes PGAL. Some PGAL is then converted into glucose, most is used to build more RuBP. 6 turns are necessary for a molecule of glucose.
The light independent reaction takes place in the stroma.
-Equation:
6CO2 + 18ATP + 12NADPH2= C6H12O6 + 18ADP + 18P + 12NADP +6H2O
-Reactants:
ATP
NADPH
Enzymes
CO2
RuBP
-Products
Glucose
ADP+P
NADP+
Alternate Pathways:
-C4 Pathway: fixes carbon dioxide into 4-C compounds. Contains enzymes not inhibited by high carbon dioxide. Requires more energy, but plants are in abundant light. Ex- Corn, sugar cane
-CAM Pathway- plant takes in CO2 at night and stores it. Ex- cacti, pineapple
Global Carbon Dioxide 2002-2009, with Mauna Loa Ca...
ball-and-stick model of CO2: carbon dioxide
Cumulative carbon dioxide emissions from G20 & non...
DNA Sequence Bracelets from the Wellcome Trust San...
PGA Photo by Ted Van Pelt