Photosynthesis

Question 1

What are the limiting factors?

Answer 1

CO2 concentration
Light intensity
Temperature

Question 2

How does light intensity affect the rate of photosynthesis?

Answer 2

Increase increase up till plateau
More light energy for photoionisation
More energy for photolysis and photo-phosphorylation
More energy for the production of ATP and NADPH
faster LD
Faster LID- ATP and NADPH needed for reduction of GP into TP, ATP also needed for the regeneration of NADPH

Question 3

ATP in photosynthesis

Answer 3

Produced: photo-phosphorylation LD
Used: Reduction of GP, regeneration of RuBP LID

Question 4

How does CO2 conc limt photosynthesis?

Answer 4

Limits the LID reaction
Increase increase until other becomes a limit g factor
More CO2 to combine with RuBP to form GP
More GP to be reduced into TP
More TP available to be converted into useful organic substances/ regenerate RuBP

Question 5

RuBP

name, where? #carbons?

Answer 5

ribulose bisphosphate
LID
5c

Question 6

GP
#carbons? #molecules? where?

Answer 6

glycerate 3-phosphate
3C
2 molecules produced
LID reaction

Question 7

Where does each stage occur?

Answer 7

LD- grana

LID- stroma