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Unformatted text preview: 0 All attempts used; correct answer displayed Photos y nthetic elec tron trans port c ontributes to the formation of a proton (H+) gradient ac ros s the thy lak oid membrane in two plac es . In PS II, the ox idation of water releas es protons into the thy lak oid s pac e. Elec tron trans port between PS II andthe c y toc hrome c omplex (through Pq) pumps protons from the s troma into the thy lak oid s pac e. The res ulting proton gradient is us ed by the ATP s y nthas e c omplex to c onv ert ADP to ATP in the s troma. Activity: Chemiosmosis se ssion.ma ste r ingbiology.c om/myc t/a ssignme ntPr intVie w? a ssignme ntI D= 2242937 19/41 13- 10- 13 Cha pte r 10 Clic k here to v iew this animation. Then ans wer the ques tions . Part A Whic h term des c ribes ATP produc tion res ulting from the c apture of light energy by c hlorophy ll? Hin t 1. Whic h ATP­produc ing proc es s us es light energy ? ANSWER: Dephos phory lation Ox idativ e phos phory lation Subs trate­lev el phos phory lation Photophos phory lation Correct The ex c itation of c hlorophy ll by light energy initiates a c hain of ev ents that leads to ATP produc tion. Part B True or fals e? The c hemios motic hy pothes is s tates that the s y nthes is of ATP generates a proton gradient that leads to elec tron flow through an elec tron trans port c hain. Hin t 1. How are elec tron flow and ATP produc tion link ed in organis ms ? ANSWER: True Fals e Correct The c hemios motic hy pothes is s tates that the flow of elec trons through an elec tron trans port c hain generates a proton gradient that leads to the s y nthes is of ATP. Part C Ac c ording to the c hemios motic hy pothes is , what prov ides the energy that direc tly driv es ATP s y nthes is ? Hin t 1. What is the c hemios motic hy pothes is ? ANSWER: Elec trons Proton gradient Temperature gradient Os motic gradient Correct A proton gradient ac ros s c hloroplas t and mitoc hondrial membranes driv es ATP s y nthes is by the enz y me ATP s y nthas e. se ssion.ma ste r ingbiology.c om/myc t/a...
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