9.102 O, is reduced when it is converted into O2 . Explain.
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Q: Hb Great Lakes 0.8 1. ;) The diagram on the right compares the O2 binding prop- erties or normal…
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Q: For myristic acid, C 13H 27CO 2H: (a) How many molecules of acetyl CoA are formed from complete…
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9.102 O, is reduced when it is converted into O2 . Explain.
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- When hydrogen gas combines with oxygen gas to form water, is thehydrogen reduced or oxidized? Explain.To completely reduce an oxidized cytochrome-c, how many electrons are required?For myristic acid, C 13H 27CO 2H: (a) How many molecules of acetyl CoA are formed from complete β-oxidation? (b) How many cycles of β-oxidation are needed for complete oxidation?
- 1.1 ;) The diagram on the right compares the O2 binding prop- 1.0 erties or normal adult hemoglobin (HbA) to those of one dubbed Hb Great-Lakes characterized by the mutation Leu(B68)His. In the dia- gram Y = fraction of heme groups with bound O2, and pO2, the par- tial pressure of O2 above the solution, is measured in units of torr or mmHg. Hb Great Lakes %3D 0.8 Hb A 0.6 Draw the corresponding Hill plot, being careful to reproduce graph- ically the dissociation equilibrium constant for O2 binding (Ko2) for Y each hemoglobin and to show the difference in the extent of allo- stery or cooperativity of subunit interaction in each type of hemo- globin. 0.4 You need draw only the central, linear portion of the Hill plot. 0.2 F State what is the likely magnitude of the Hill constant (nH) for HbA from your reading and state what is the likely range of the magni- tude of the Hill coefficient for Hb Great Lakes. 0 10 20 30 40 50 60 pO2 (torr)To carefully prepared mitochondria were added succinate, oxidizedcytochrome c, ADP, orthophosphate, and sodium cyanide. Referring toFigure 14.16, answer the following.(a) List the sequence of electron carriers in this system.(b) Write a balanced equation for the overall reaction occurring in thissystem, showing oxidation of the initial electron donor, reduction of thefinal acceptor, and synthesis of ATP.(c) Calculate ΔG°' for the overall reaction. ΔG°' for ATP hydrolysis is-32.2 kJ/mol.(d) Why was cyanide added in this experiment?(e) What would the P/O ratio be if the same experiment were run with addition to the mitochondria of 2,4-dinitrophenol?Consumption of nitrate-rich vegetables such as spinach have been shown to reduce blood pressure in prehypertensive individuals (i.e., those having no history of clinical hypertension), a phenomenon attributed to increased nitric oxide synthesis. Describe the reactions that convert nitrate (NO3 −) to nitric oxide (NO•) in the body.
- Highly active muscles generate lactic acid by respiration so fast that the blood bassing through the muscle actually experiences a drop in pH from 7.4 to 7.2. Under these conditions, hemoglobin releases about 10% more O2 than it does at pH 7.4. Explain.5.Some diazotrophs produce a vanadium-containing VFe protein in addition to the MoFe protein. The vanadium-containing nitrogenase converts N2 to NH3 and also converts CO to compounds such as ethane and propane. What aspect of the standard nitrogenase reaction is responsible for the production of alkanes?
- 42)There is but a single enzyme-catalyzed reaction in the human body known to generate carbon monoxide (CO) as one of its products. Which of the following enzymes represents the one that catalyzes this CO-producing reaction? (A) biliverdin reductase O (B) coproporphyrinogen oxidase (C) heme oxygenase O (D) protoporphyrinogen oxidase O (E) uroporphyrinogen decarboxylase4P2.5