exam 2.5
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Which of the following [REDACTED] Ubiquinone? reduces 1. enz complex 2. molecule
• NADH-ubiquinone Oxidoreductase • NADH
Congratulations! Due to your success in Dr. Daniel’s Cellular Metabolism class. You have been selected by NASA to do the biochemical write up on a new organism recovered from a Martian probe! During your analysis you have discovered a brand new electron transport chain! The organism appears to use electron transport as its primary source of energy rather than ATP. This leaves you with a couple of questions to answer- During your analysis you discover a new electron transport chain based on: * Ickygreenone + 2e- –> Ickygreenol [REDACTED] -0.5V * Barsoom + 2e- –> Barsool [REDACTED] -1.25V 1. How many [REDACTED] in the proposed chain? • What is the standard free energy of the proposed chain? (Do not use units) What is the [REDACTED] of the proposed chain? • What is the voltage on the reaction containing the [REDACTED]? (Do not use units) • What is the [REDACTED] in the proposed chain? • From one run of the proposed electron transport chain, what is the maximum ATP equivalents in energy that could theoretically be generated? • What is the product of [REDACTED] in the proposed chain? 7
• ATP formula = G/7.3 • Free E formula = G = -nF(E’0) E’0 = total volts FLIP REACTION WITH MORE NEGATIVE VOLTAGE ~ Oxidized – gain e- in oxidized rnx ~ Reduced – lost e- in reduced rnx ~ reductant – lost e- in oxidized rnx ~ oxidant – gained e- in reduced rnx
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