Oxidation and Reduction Reactions in Metabolic Pathways
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Questions and Answers

What is the overall process through which living systems acquire and utilize the free energy they need to carry out their various functions?

  • Catabolism
  • Metabolism (correct)
  • Oxidation-reduction reactions
  • Anabolism
  • What are the series of consecutive enzymatic reactions that produce specific products referred to as?

  • Biomolecules
  • Bioenergetics
  • Enzymatic chains
  • Metabolites (correct)
  • Which category of reaction pathways involves breaking down nutrients and cell constituents exergonically to salvage their components and/or to generate free energy?

  • Anabolism
  • Bioenergetics
  • Oxidation-reduction reactions
  • Catabolism (correct)
  • How many enzymes catalyze each reaction in metabolic pathways?

    <p>4000 enzymes</p> Signup and view all the answers

    What kind of group transfer involves the addition of a nucleophile to the electrophilic carbon atom of an acyl compound?

    <p>Acyl group transfer</p> Signup and view all the answers

    Which type of group transfer yields a trigonal bipyramidal intermediate with apical positions occupied by the leaving group and the attacking group?

    <p>Phosphoryl group transfer</p> Signup and view all the answers

    In which type of reaction is peptide bond hydrolysis a familiar example?

    <p>Acyl group transfer</p> Signup and view all the answers

    What is the most commonly transferred group in biochemical reactions according to the text?

    <p>Acyl groups</p> Signup and view all the answers

    What type of reaction is the aldose–ketose interconversion?

    <p>Base-catalyzed reaction</p> Signup and view all the answers

    Which enzyme catalyzes the aldose–ketose interconversion?

    <p>Phosphoglucose isomerase</p> Signup and view all the answers

    What is the result of racemization in a molecule with one chiral center?

    <p>The chiral center inverts</p> Signup and view all the answers

    What type of reaction is the conversion of L-methyl malonyl-CoA to succinyl-CoA by methylmalonyl CoA mutase?

    <p>Rearrangement reaction</p> Signup and view all the answers

    What is the ultimate fate of the two bonding electrons lost by the carbon atom in redox reactions?

    <p>They are transferred to an electron acceptor such as NAD</p> Signup and view all the answers

    What is the terminal electron acceptor for the electron pairs removed from metabolites by their oxidation in aerobic organisms?

    <p>Molecular oxygen (O2)</p> Signup and view all the answers

    What type of reactions result in the formation of a double bond between two previously single-bonded saturated centers?

    <p>Elimination reactions</p> Signup and view all the answers

    Which coenzyme can undergo two sequential one-electron transfers or a simultaneous two-electron transfer that bypasses the semiquinone state?

    <p>Flavin adenine dinucleotide (FAD)</p> Signup and view all the answers

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