Light independent stage Flashcards
Where does the light independent stage take place ?
stroma of chloroplast
How does carbon dioxide enter the leaves ?
enters intracellular spaces within spongy mesophyll of leaves by diffusion
How process does carbon dioxide enter leaves by ?
diffusion
Where specifically does the carbon dioxide diffuse to ?
stroma in chloroplast
What does carbon dioxide combine with ?
ribulose bisphosphate ( RuBP )
How many carbon atoms does RuBP have ?
5 carbon molecule
What enzyme catalyses the reaction between carbon dioxide and RuBP ?
Ribulose bisphosphate carboxylase ( RuBisCO )
What does it mean when carbon dioxide is FIXED ?
incorporated into organic molecule
What is produced when CO2 combines with RuBP ?
unstable 6 carbon molecule intermediate
What does the 6 carbon unstable intermediate break down into ?
two GP molecules ( 3 carbon each )
What is GP ?
glycerate-3-phosphate
What does each GP molecule get reduced to ?
TP molecule
What is TP ?
triose phosphate
What is needed to reduce GP to TP ?
hydrogen from NADPH
ATP
What is TP used for ?
starting point of synthesis of biological molecules
carbs , proteins , nucleic acids , lipids
