A generic redox reac tions howingthetrans

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Unformatted text preview: ial, watc h the Photos y nthes is animation. Pay c los e attention to the role of light, the formation of NADPH and ATP, and the us e of NADPH and ATP in s ugar produc tion. Part A ­ Inputs and outputs of the light reactions From the following c hoic es , identify thos e that are the inputs and outputs of the light reac tions . (Rec all that inputs to c hemic al reac tions are modified ov er the c ours e of the reac tion as they are c onv erted into produc ts . In other words , if s omething is required for a reac tion to oc c ur, and it does not remain in its original form when the reac tion is c omplete, it is an input.) Drag each item to the appropriate bin. If the item is not an input to or an output from the light reactions, drag it to the “ not input or output” bi n. Hin t 1. Energy conversion from one form to another in the light reactions The light reac tions c onv ert one form of energy into the c hemic al energy of ATP molec ules . Think about the s ourc e of this energy and about what is needed to mak e ATP molec ules . Hin t 2. Which energy sources produced in the light reactions will be used by the Calvin cycle? Whic h of the following trans fer energy from the light reac tions to the Calv in c y c le? Select all that apply. ANSWER: A TP light NADPH G3P se ssion.ma ste r ingbiology.c om/myc t/a ssignme ntPr intVie w? a ssignme ntI D= 2242937 26/41 13- 10- 13 Cha pte r 10 Hin t 3. What is the role of light in the light reactions? The term “light reac tions ” implies that light play s s ome role in this s tage of photos y nthes is . Whic h of the following s tatements c orrec tly des c ribes a role of light in the light reac tions ? Which of the following statem ents correctly describes light's role? ANSWER: Light s upplies the energy to remov e elec trons from water and to trans port thos e elec trons to NADP+. Light prov ides the atoms that are needed to c onv ert ADP to ATP. Light s upplies the elec trons that are needed to reduc e NADP+ to NADPH. Light ener...
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