Question

hlutomate RPH + Hold IIIB. (8 pts) In chloroplasts, 3 phosphoglycerate is primarily produced in the following pathway. Identity any missing factors, and name all the enzymes. NAOPA CHOPO, CO + CO2 -OH OH CHOPO,2- CH,OPO, 2 HO--H Coo- 3-Phosphoglycerate H H нсон OPOZ H-C-OHN phospha CH_OPO, glycood hinase Gyly cera den 430PC, Phosphate. dehyd we IIIC. (8 pts) 1. In the electron transport chain of mitochondria, the overall oxidation/reduction reaction is: NADH+H +02- NAD + H2O In chloroplasts, what is the overall oxidation reduction that occurs in the light reactions? 2. In one sentence, explain how the very energetically-unfavorable reaction you have written takes place. (You have finished 70 points in

Answer 1

III B )

3 phosphoglycerate ------- 1,3 bisphosphoglycerate

energy source : ATP

enzyme :phosphoglycerate kinase

1,3 bisphosphoglycerate ------- glyceraldehyde-3-phosphate

energy source: NADPH

enzyme : NADP glyceraldehyde-3-phosphate dehydrogenase

these reaction occur during reduction phase of calvin cycle.

III C )

NADP+ + H ------- NADPH ( reduction reaction )

this NADPH which is formed in light reaction will be utilised in dark reaction.

photolysis of water at photosystem II using oxygen evolving complex

2H2O ----------- 4H+ + 4e- + O2

2) dark reactions in chloroplast

during light reactions NADPH is formed which are used in glucose formation during dark reaction.