Unformatted text preview: DPH are produc ts of the light reac tions and are als o the energy inputs into the Calv in c y c le.
Where in the chloroplast are ATP and NADPH produced?
thy lak oid membrane
thy lak oid s pac e ANSWER: se ssion.ma ste r ingbiology.c om/myc t/a ssignme ntPr intVie w? a ssignme ntI D= 2242937 31/41 13- 10- 13 Cha pte r 10 Correct
The c hloroplas t is enc los ed by a pair of env elope membranes (inner and outer) that s eparate the interior of the c hloroplas t from the s urrounding
c y tos ol of the c ell. Ins ide the c hloroplas t, the c hlorophy llc ontaining thy lak oid membranes are the s ite of the light reac tions .
Between the inner env elope membrane and the thy lak oid membranes is the aqueous s troma, whic h is the loc ation of the reac tions of the Calv in
c y c le. Ins ide the thy lak oid membranes is the thy lak oid s pac e, where protons ac c umulate during ATP s y nthes is in the light reac tions . Photosynthesis (3 of 3): The Calvin Cycle (BioFlix tutorial)
In the Calv in c y c le, c arbon diox ide (CO2), whic h enters the leaf as a gas , is c onv erted into
the s imple s ugar gly c eraldehy de3phos phate (G3P). This proc es s us es ATP and NADPH
produc ed by the light reac tions . The net produc tion (output) of one molec ule of G3P
requires three c omplete turns of the Calv in c y c le, with one CO2 entering at eac h turn of the
c y c le. In eac h of the three k ey phas es of the Calv in c y c le (c arbon fix ation, reduc tion, and
regeneration), c arbon s k eletons are modified in reac tions that lead to the final produc ts
(s ee diagram below).
Before beginning this tutorial, watc h the Calv in Cy c le s egment of the Photos y nthes is
animation. Pay partic ular attention to the flow of c arbon atoms through the c y c le and the
plac es in the c y c le where ATP and NADPH are us ed. Part A F ollowing carbon atoms around the Calvin cycle
The net reac tion of the Calv in c y c le is the c onv ers ion of CO2 into the threec arbon s ugar G3P. A...
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This document was uploaded on 02/17/2014 for the course BIOCHEMIST 2550 at Ohio State.
- Spring '14