TF Skillbuilder answers

TF Skillbuilder answers - Ch 13 The structure of NAD+ does...

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Ch 13 The structure of NAD+ does not include: a flavin nucleotide. Biological oxidation-reduction reactions never involve: formation of free e-. Biological oxidation-reduction reactions always involve: transfer of electron(s). If the delta G' ° of the reaction converting A to B is –40 kJ/mol, under standard conditions the reaction: will proceed spontaneously from left to right. The hydrolysis of ATP has a large negative deltaG'°; nevertheless it is stable in solution due to: the hydrolysis reaction having a large activation energy . Which of the following compounds has the largest negative value for the standard free-energy change (deltaG'°) upon hydrolysis? Acetic anhydride For the reaction A to B, the Keq' is 10 4 . If a reaction mixture originally contains 1 mmol of A and no B, which one of the following must be true? At equilibrium, there will be far more B than A. The reaction ATP converted to ADP + Pi is an example of a(n) _________ reaction. group transfer The hydrolysis of phosphoenolpyruvate proceeds with a deltaG'° of about –62 kJ/ mol. The greatest contributing factors to this reaction are the destabilization of the reactants by electrostatic repulsion and stabilization of the product pyruvate by: tautomerization Which one of the following compounds does not have a large negative free- energy of hydrolysis? 3-phosphoglycerate The immediate precursors of DNA and RNA synthesis in the cell all contain: 5' triphosphates. Muscle contraction involves the conversion of: chemical energy to kinetic energy. Ch 14
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Glycolysis is the name given to a metabolic pathway occurring in many different cell types. It consists of 11 enzymatic steps that convert glucose to lactic acid. Glycolysis is an example of: fermentation All of the following enzymes involved in the flow of carbon from glucose to lactate (glycolysis) are also involved in the reversal of this flow (gluconeogenesis) except: phosphofructokinase-1. In humans, gluconeogenesis: c an result in the conversion of protein into blood glucose. The metabolic function of the pentose phosphate pathway is to: generate NADPH and pentoses for the biosynthesis of fatty acids and nucleic acids. Which of the following enzymes acts in the pentose phosphate pathway? 6-phosphogluconate dehydrogenase In a tissue that metabolizes glucose via the pentose phosphate pathway, C-1 of glucose would be expected to end up principally in: carbon dioxide. In the alcoholic fermentation of glucose by yeast, thiamine pyrophosphate is a coenzyme required by: pyruvate decarboxylase Which of the following statements about the pentose phosphate pathway is correct? It provides precursors for the synthesis of nucleotides. Which of the following statements about the pentose phosphate pathway is incorrect? It requires the participation of molecular oxygen.
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This note was uploaded on 06/16/2009 for the course HUN 4445 taught by Professor Sitren during the Fall '08 term at University of Florida.

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TF Skillbuilder answers - Ch 13 The structure of NAD+ does...

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