Ch. 8 Photosynthesis Flashcards
What are the two steps of Photosynthesis?
- Light-dependent reactions
- Light-independent reactions
What is the other term for the second step of Photosynthesis?
Calvin Cycle (or Carbon Fixation)
Where do Light-dependent reactions occcur?
in the Thylakoid Membrane
Where do Light-independent reactions occur?
the Stroma
What is the function of Light in Photosynthesis?
Light causes electrons from Chlorophyll to become energized and leave their atoms, beginning Photosynthesis.
What is the final electron receptor in Photosynthesis?
NADP. A positive Hydrogen ion binds to NADP to form NADPH
How does Chlorophyll re-supply electrons?
H2O (water) supplies electrons for Chlorophyll. H2O becomes oxidized.
What are the phases of the Calvin Cycle?
- CO2 uptake
- Carbon reduction
- “RuBP” regeneration
What happens during the CO2 uptake phase?
6 molecules of RuBP and 6 CO2 molecules create 12 molecules of PGA (Phosphoglycerate) 0-0-0-P
What happens during the Carbon reduction phase?
12 ATP is used and 12 NADH used
G3P (Glyceraldehyde Triphosphate) is created
What happens after the creation of G3P in the Carbon reduction phase?
2 G3P can be used to create Glucose and other Carbohydrate synthesis
What happens during the RuBP regeneration phase?
10 G3P are converted into 6 RP
6 ATP are used to turn 6 RP into 6 RuBP molecules
What does RP stand for in the Calvin Cycle?
Ribulose Phosphate
What does RuBP stand for in the Calvin Cyle?
Ribulose BiPhosphate
Draw the Calvin Cyle and compare to notes
- 6 CO2 + 6 RuBP = 12 PGA
- ATP + NADPH + 12 PGA = 12 G3P
2a. 2 G3P = Glucose - 10 G3P = 6 RP
3a. 6RP + 6 ATP = 6 RuBP
