Redox towers are used to show the difference in redox potential for common metabolic half reactions....
Redox towers are used to show the difference in redox potential for common metabolic half reactions. Examine each combination of half reactions shown below, and answer the following:
- which half reaction in each pair has the higher E0’?
- which combined reaction is more likely? Donor → acceptor, or acceptor → donor?
Acceptor Half Rxn
NAD+ + 2H+ + 2e-
NO3- + 2H+ + 2e-
Donor Half Rxn
NADH + H+
NO2- + H2O
∆E0’ = -320mV
∆E0’ = +420mV
Homework Answers
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Redox towers are used to show the difference in redox
potential for common metabolic half reactions....
Using the table of reduction potentials (Eo) for the half-reactions shown, match the given redox reactions...
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___and the final electron acceptor should be
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Use the information from the redox couples below to answer the fill in the blank questions, using the letter after each substance. (i.e. if you believe that the answer is CoQ fill in the appropriate blank with the letter A). Each letter (substance) may be used...
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I need this answered and explained! Redox couple Eo (V) CO2/glucose (-0.43) 24 e 2H /H2...
I need this answered and explained!
Redox couple Eo (V) CO2/glucose (-0.43) 24 e 2H /H2 (-0.42) 2e CO2/methanol(-0.38) 6 e NAD /NADH (-0.32) 2 e -0.50 --0.40 -0.30 CO2/acetate (-0.28) 8 e E-0.20 S /H2S (-0.28)2 e SO22 /H2S(-0.22) 8 e Pyruvate/lactate (-0.19) 2 e SO62-S2032(+0.024) 2 e -0.10 0.0 Fumarate/succinate (+0.03) 2 e +0.10 Cytochrome boxred (+0.035) 1 e +0.20 Fe3 /Fe2 (+0.2) 1 e, (pH 7) Ubiquinone ox/red (+0.11) 2 e Cytochrome Cox/red (+0.25) 1 e Cytochrome...
Using the table of reduction potentials (Eo) for the half-reactions shown, match the given redox reactions with their Eo and predict the change in free energy by stating whether the reactions will be exergonic or endergonic Exergonic 1.14 V 1.00 V 0.15 V 1.24 V 1.24 V Endergonic Reaction Free Energy Eo (Volts) CO2/glucose [-0.43] -0.5 -0.4 NAD /NADH 0.32 -0.3 NADH H 12 OH.ONAD 2HH2 -0.42] CO2/methanol [-0.38] Co2/acetate [-0.28] FADFADH2[-0.18] Pyruvatelactate [-0.19] 6CO, + 6H,O → 60, +...
For each of the following redox reactions (not balanced), define which component is being reduced and which is being oxidized as the reaction progresses. *It may be quite beneficial to draw the element in question and its electrons in its reactant and product state. 1) C6H12O6 + O2 → CO2 + H2O Carbon is Oxygen is 2) CO2 + H2O + CHA + O2 Carbon is Oxygen is 3) NAD + H+ + 2e + Malate → NADH + Oxaloacetate...
Redox: The best initial electron donor for an
organism performing fermentation would be ___, while the best final
electron acceptor would be ___ .
Use the information from the redox couples below to answer the fill in the blank questions, using the letter after each substance. (i.e. if you believe that the answer is CoQ fill in the appropriate blank with the letter A). Each letter (substance) may be used more than once. Hint: put the redox couples into an...
Question 2 (1 point) Given the following half reactions with their corresponding standard reduction potentials, which of the following is/are true for the overall reaction happening under standard conditions? NO3 + 2H+ + 2e → NO2 + H20 E'O=0.421 V + O2 + 2H+ + 2e H20 E'=0.816 V (CHECK THE ONE(S) THAT IS/ARE CORRECT) 1) AE'' = 0.395 V for the spontaneous reaction. 2) % O2 + NO2 + NO3 is a spontaneous reaction. 3) O2 is the reducing...
Q7) Using Table 9.1 (page 294) in your textbook and/or in the slides of chapter 9 (online material), determine the standard free energy (AG) for the following reaction in kJ/mol. [Faraday constant = 96.5 kJ/V] [10 points) FADH2 + 1/202 - FAD + 2H+ + H:0 Show detailed calculation. Final answer without clear work will not be considered. TABLE 9.1 Standard Reduction Potentials Redox Half-Reaction 2H+ + 2e" - H a-Ketoglutarate + CO, + 2H+ 2e isocitrate NADP+ + H+...
Redox : If members of the redox couples above were used to set
up the most energetically favorable chemical
reaction, the initial electron donor should be
___and the final electron acceptor should be
___.
Use the information from the redox couples below to answer the fill in the blank questions, using the letter after each substance. (i.e. if you believe that the answer is CoQ fill in the appropriate blank with the letter A). Each letter (substance) may be used...
26. Standard Reduction Potentials The standard reduc- tion potential, E", of any redox pair is defined for the half-cell reaction: Oxidizing agent + n electrons – reducing agent The E' values for the NAD+/NADH and pyruvate/lactate con- jugate redox pairs are -0.32 V and -0.19 V, respectively. (a) Which redox pair has the greater tendency to lose electrons? Explain. (b) Which pair is the stronger oxidizing agent? Explain. (C) Beginning with 1 M concentrations of each reactant and product at...
I need this answered and explained!
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