Exam Q+As - EXAMI ,because o ,pH7,inwater,at1...

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EXAM I - ATP is called a “high energy compound,” because o The deltaG for the hydrolysis of ATP is very negative - The reaction described in the free energy diagram below is run at 25 C, pH 7, in water, at 1  atmospheric pressure. When it reaches equilibrium, will we end up with mostly X, or mostly Y? o Mostly Y - Consider free energy diagram, which describes the energy states of molecules undergoing the  reaction X <-> Y. raising the temperature of the reaction would decrease the value of which  arrow? o B - The proton motive force generated by electron transport can power ATP synthesis because o Concentrated protons have greater free energy than dilute protons - If chlorobium is grown in the presence of light, with glucose, but without H 2 S, what will happen? o Production of NADH 2  via photosynthesis will not be possible - Redox reactions are often employed to generate energy for the cell to use for anabolic reactions.  The energy released by these exergonic reactions is temporarily stored in the form of o Both ATP and NADH - In a chemicall reaction, the reactants A+B are transformed into C+D. the enzyme E catalyzes this  reaction. Which of the following correctly describes the effect of the enzyme on the free energy  difference between A+B and C+D? o Enzyme E has no effect on the ffree energy difference - Which thermodynamic statement is true? o Entropy tends to increase in a closed system - Which of the following is true of an anabolic pathway o It results in net consumption of ATP o It results in net consumption of NADH and/or NADPH - In the step of glycolysis illustrated ere, the production of ATP from ADP and Pi is powered by o The oxidation of carbon - In respiration, most of the ATP is generated as a result of o Oxidation of NADH via the ETC and PMF - In order for the citric acid cycle to run at steady state o An external source of fuel must be available o An external source of the terminal electron acceptor must be available - Both fermentation and respiration share the metabolic pathways termed “glycolysis”. They also  share o None of the above - In fermentation the electrons pulled from glucose o Often need to be dumped onto a metabolite o Can sometimes be useful when you need to reduce something - Aerobic respiration produces more ATPs/glucose than anaerobic respiration because o O 2  is a stronger oxidant than other biologically relevant electron acceptors - Is the reaction: lactate +  ½  O 2    pyruvate + H 2 O energetically favorable (use table)?
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