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img023 - 333 g 9 PF©P ©@‘MxX g llof12 The solid curve...

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Unformatted text preview: 333% g; 9 PF©P ©\ @‘MxX \ g llof12 The solid curve could also represent the activity of PDH if the ATP concentration was low and the NAD‘INADH ratio was very high . A similar pair of curves could be expected when measuring phosphofructokinase-I activity as a function of fructose-6— phosphate concentration with and without added citrate (i.e the lower curve representing addition of citrate). Point A represents a point on the activity curve where enzyme activity is very sensitive to concentration of the pyruvate. Point B represents a point on the activity curve where the effect of AIP has no effect on the enzyme activity because of the high concentration of pyruvate. A similar pair of curves could be expected when measuring pyruvate carboxylase activity as a function of pyruvate concentration with and without added acetleoA (i.e the lower curve representing addition of acetyl CoA). Which of the following is ngt found associated with Complex I of the electron transport system? SVQN I < “pH/'1 \‘_V M T‘ N’Kn‘y/Lguxfh coenzyme Q V \g}- (fié » iron sulfur proteins / $0 y 5 , N cytochrome c > C0 ‘6 §g \’AA . G I M \/ m < Fe: 2 the pumping of if during electron transport./ \ \\\‘t\ V Pyruvate dehydrogenase and are analogous oxidative-decarboxylating dehydrogenaae complexes each+ containing three enzymes and five cofactors. Glyceraldehyde-B—phosphate dehydrogenase . —ketoglutarate dehydrogenase / CONN/"301‘. NA‘) «NA U” Isocitrate dehydrogenase Succinate dehydrogenase Phosphoenolpyruvate carboxy kinase Each of the following is a substrate in the electron transport system, EXCEPT: x—fi succinate CoQHz (reduced coenzyme Q) cytochrome cm oxygen . thiamine pyrophosphate —pemo<£ Pi Shunt? Which of the following is NOT necessary for the samthesiLQi. ATP by oxidative phosphorylation? W the concomitant transfer of protons from the mitochondrial matrix to the intermembrane space with the transport of electrons to 02 \/ ’ specific membrane channels for the flow of H" along a chemical gradient a transmembrane ATP synthese/ adequate amounts of ADP and inorganic orthophosphate© \/ substrate level; phosphorylation 10/22/2008 1:19 PM flips://elearning.courses.ufl.edu/webct/ComeniPageServerServleI/ex.. ...
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