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- Based on your residing of this chapter, what would you expect to be the most immediate effect oil glycolysis, if the steady-state concentration of gJucose-6-P were 8.3 mM instead of 0.083 mM?The Relative Efficiency of ATP Synthesis in Noncyclic versus Cyclic Photophosphorylation If noncyclic photosynthetic electron transport leads to the translocation of 7 H+/2e- and cyclic photosynthetic electron transport leads to the translocation of 2 H+/e-, what is the relative photosynthetic efficiency of ATP synthesis (expressed as the number of photons absorbed per ATP synthesized) for noncyclic versus cyclic photophosphorylation? (Assume that the CF1CF0-ATP synthase yields 3 ATP/14 H+.)Although physiologically distinct, aerobic chemolithotrophsand chemoorganotrophs share a number of features withrespect to the production of ATP. Discuss these commonfeatures along with reasons why the growth yield (gramsof cells per mole of substrate consumed) of achemoorganotroph respiring glucose is so much higherthan for a chemolithotroph respiring sulfur
- Explain why rotenone inhibits oxidative phosphorylationwhen the substrate is pyruvate, but not when succinate isusedWhy is pyruvate not oxidized to-3 CO2 and H2O under anaerobic * .?conditions إجابتكCalculate the biochemical standard cell potential for the oxidation of NADH by molecular oxygen O2 + 2NADH + 2 H+ → 2H2O + 2NAD+
- The coenzyme NADP is the terminal electron acceptor in chloroplasts, according to the reaction 2 H₂O + 2 NADP+ 2 NADPH + 2 H+ + O₂ Calculate the equilibrium constant, K'eq, for this reaction at 25 °C. + Use an E'° of -0.324 V for NADP and 0.816 V for H₂O. K'eq = x10A dialyzed pigeon liver extract will catalyze the conversion of acetyl-CoAto palmitate and CoASH if supplied with Mg2+, NADPH, ATP, HCO3-, andcitrate.(a) If H14CO3– is supplied, what compounds will become labeled (permanently or transiently) during the course of the reaction? In whatcompounds will 14C accumulate?(b) Explain the role of citrate in this reaction.For lactate dehydrogenase reaction if km for NADH is 2×10^-4 M . What concentration of it would be appropriate for determining Km for pyruvate?
- Complete a concept map (or system model) relating the following terms Glycolysis Oxidation of Pyruvate . Citric Acid Cycle Electron Transport Chain Chemiosmosis. Glucose Substrate level phos. oxidized elec. carriers (NAD+) High enerGy Elec. Pyruvate AcetylCoA Low enerGy Eleç. H+ Gradient CO2 Охудеn ADP + Pi Water АТР Oxidative Phos. -- ---- ---- reduced elec. carriers (NADH)Determine the total yield of ATP for the complete oxidation of 1 molecule of 3-phosphoglycerate. Show the work and reasoning, and indicate how many ATP, NADH, and FADH2 are formed and in which steps. Include ATP produced in the electron transport chain. Express the answer as a rangeDescribe method by which uncoupling agents (like 2,4-dinitrophenol) inhibit oxidative phosphorylation without affecting electron transport.