100%(2)2 out of 2 people found this document helpful
This preview shows page 1 - 3 out of 6 pages.
MCB 102University of California, BerkeleyJuly 24, 2009Isabelle PhilippOnline DocumentProblem Set 5——–Answer Key1.Match theK0eqvalues with the appropriateΔGo0valuesK0eqΔGo0(kJ/mol)a)1i)28.53b)10-5ii)–11.42c)104iii)5.69d)102iv)0e)10-1v)–22.84a) 0; b) 28.53; c) – 22.84; d) – 11.42; e) 5.692.Energy conservationThe complete combustion of glucose to CO2+ H2O proceeds with an overall ΔGo’of –2863 kJ/mol.When this process occurs in a typical cell, 32 moles of ATP areproduced from ADP + Pi. Assuming that cellular ΔGforATP→ADPhydrolysis is–41.7 kJ/mol and that ΔG∼=ΔGo’ for glucose oxidation under intercellular (in vivo)conditions, what fraction of the potential energy of glucose is conserved in the form ofATP?3.Oxidative PhosphorylationNormally ATP synthesis is tightly coupled to electron transfer through the electrontransport chain.Under these conditions, the ratio of ATP produced per atom ofoxygen consumed (P/O ratio) is about 2.5. Predict the effect of a low concentrationof an uncoupling agent on the P/O ratio.
2Online Document: Problem Set 5——–4.Oxidative Phosphorylation – Electron Transport ChainFor each of the four complexes in the electron transport chain:(a) calculate the total redox potential of the complex(b) calculate the free energy available for proton translocation assuming a 2-electronprocess for each complex(c) calculate how many moles of protons can be translocated across the inner mito-chondrial membrane if translocation of 1 mole requires 23 kJ.