Theremainingg3pmolec ules areus edin phas e3

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Unformatted text preview: in photosynthesis? In photos y nthes is , s unlight is the original s ourc e of the energy required to produc e s ugar. What is the original source of the electrons that are eventually used to reduce CO2 to sugar in photosynthesis? ANSWER: se ssion.ma ste r ingbiology.c om/myc t/a ssignme ntPr intVie w? a ssignme ntI D= 2242937 29/41 13- 10- 13 Cha pte r 10 A TP NADPH light H2O O2 ANSWER: Correct In the light reac tions , light energy is us ed to remov e elec trons from (ox idiz e) water, produc ing O2 gas . Thes e elec trons are ultimately us ed to reduc e NADP+ to NADPH. In the Calv in c y c le, NADPH is ox idiz ed bac k to NADP+ (whic h returns to the light reac tions ). The elec trons releas ed by the ox idation of NADPH are us ed to reduc e three molec ules of CO2 to s ugar (G3P), whic h then ex its the Calv in c y c le. Part D ­ Chloroplast structure and function In euk ary otes , all the reac tions of photos y nthes is oc c ur in v arious membranes and c ompartments of the c hloroplas t. Identify the m em branes or com partm ents of the chloroplast by dragging the blue labels to the blue targets. Then, identify where the light reactions and Calvin cycle occur by dragging the pink labels to the pink targets. Note that only blue labels should be placed in blue targets, and only pink labels should be placed in pink targets. Hin t 1. Review of chloroplast structure se ssion.ma ste r ingbiology.c om/myc t/a ssignme ntPr intVie w? a ssignme ntI D= 2242937 30/41 13- 10- 13 Cha pte r 10 Hin t 2. What does the location of the enzyme Rubisco reveal about where processes occur in the chloroplast? The enz y me Rubis c o is found in the s troma of the c hloroplas t. What is Rubisco’s role in photosynthesis? ANSWER: It is one of the produc ts of the Calv in c y c le. It c ataly z es a reac tion in ATP s y nthes is in the light reac tions . It c ataly z es a reac tion in the Calv in c y c le. It c ataly z es a reac tion in elec tron trans port in the light reac tions . Hin t 3. Where are NADPH and AT P produced? ATP and NA...
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