Light InDependnat Flashcards
1
Q
What is light independent reaction also known as
A
Calvin cycle
2
Q
3 stages of Calvin cycle
A
- carbon fixation
- reduction
- regeneration
3
Q
Describe what occurs do in carbon fixation
A
- Co2 react with RUBP catalysed by enzyme rubisco
- produces 2 GP (6c)
4
Q
What occurs during reduction
A
- 2 GP is reduced to 2 triose phosphate
- using reduces of light dependant reaction:
- energy from 2 ATP
- ## H+ from reduced NADP
5
Q
What occurs during regeneration
A
- RUBP is regenerated from triose phosphate using the rest of ATP
- some triose phosphate is converted into organic substances
6
Q
Role of ATP and NADPH in light independent reaction
A
ATP: reduction of GP into TP and regenerate TP to RUBP
NADPH: H+ needed to reduce GP to TP
7
Q
Number of carbon atoms of RUBP
A
5
8
Q
Number of Caron atoms of GP
A
3
9
Q
Numbe of carbon atoms of TP
A
3
10
Q
What occurs when when o2 is present
A
O2 is competing with co2 for active sit of rubisco
