Metabolism and Energy Production Quiz
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Questions and Answers

What is the final electron acceptor in carbon oxidation?

  • Oxygen (correct)
  • Pi
  • Flavin adenine dinucleotide
  • Nicotinamide adenine dinucleotide

    • Which compound is an activated carrier of phosphoryl groups used to form ATP?

  • Nicotinamide Adenine Dinucleotide Phosphate
  • Nicotinamide adenine dinucleotide
  • Flavin adenine dinucleotide
  • Acetyl CoA (correct)

    • What type of reaction is dehydrogenation?

  • Oxidation (correct)
  • Reduction
  • Phosphorylation
  • Hydration

    • Which molecule is responsible for transferring high-potential electrons in reductive biosynthesis?

    <p>Nicotinamide Adenine Dinucleotide Phosphate</p> Signup and view all the answers

    What is the reactive site in Coenzyme A for acyl group transfer?

    <p>Thioester bonds</p> Signup and view all the answers

    Which molecule has a higher affinity for electrons than fuel molecules but lower affinity than O2?

    <p>NADH</p> Signup and view all the answers

    What is the primary function of activated carriers of electrons for fuel oxidation?

    <p>To generate ATP</p> Signup and view all the answers

    What is the derivative of vitamin riboflavin that accepts electrons and protons forming FADH2?

    <p>Isoalloxazine ring</p> Signup and view all the answers

    What type of reactions are characterized by the gain of electrons?

    <p>Reduction</p> Signup and view all the answers

    What drives thermodynamically unfavorable reactions by being coupled with them?

    <p>Nicotinamide Adenine Dinucleotide Phosphate</p> Signup and view all the answers

    What is the unifying motif of biochemistry as mentioned in the text?

    <p>Homeostasis maintenance</p> Signup and view all the answers

    Which process involves the regulation of gene transcription to control the amounts of enzymes?

    <p>Rate of synthesis regulation</p> Signup and view all the answers

    What is the primary function of activated carriers of electrons for the synthesis of biomolecules?

    <p>Transfer high-potential electrons</p> Signup and view all the answers

    What do enzymes control in relation to the flow of free energy and reducing power according to the text?

    <p>Kinetic stability</p> Signup and view all the answers

    How are thermodynamically unfavorable reactions driven in metabolic pathways as per the text?

    <p>Activated carriers of electrons</p> Signup and view all the answers

    Which molecule acts as an electron donor in most reductive biosynthesis processes?

    <p>NADPH</p> Signup and view all the answers

    What is the role of NADH, NADPH, and FADH2 in the absence of an enzyme according to the text?

    <p>Reaction with O2</p> Signup and view all the answers

    Which molecule is involved in transferring acyl groups in both catabolism and anabolism based on the text?

    <p>$CoA$</p> Signup and view all the answers

    What is the role of activated carriers of electrons for fuel oxidation?

    <p>Transport high-potential electrons in catabolic reactions</p> Signup and view all the answers

    What drives thermodynamically unfavorable reactions by being coupled with them in metabolic pathways?

    <p>Carbon Oxidation paired with a Reduction</p> Signup and view all the answers

    Which molecule is involved in transferring acyl groups in both catabolism and anabolism based on the text?

    <p>Coenzyme A</p> Signup and view all the answers

    What is the primary function of activated carriers of electrons for the synthesis of biomolecules?

    <p>Act as electron donors in reductive biosynthesis</p> Signup and view all the answers

    Which molecule has a higher affinity for electrons than fuel molecules but lower affinity than O2?

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

    In addition to ATP, what else is required in anabolic reactions according to the text?

    <p>High-potential electrons</p> Signup and view all the answers

    What characteristic is associated with NADH, NADPH, and FADH2 reacting slowly with O2 in the absence of an enzyme?

    <p>Kinetic stability</p> Signup and view all the answers

    What is the reactive site in Coenzyme A for acyl group transfer?

    <p>Terminal sulfhydryl group</p> Signup and view all the answers

    What is the derivative of vitamin riboflavin that accepts two electrons and two protons forming FADH2?

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

    What is the primary function of activated carriers of electrons for fuel oxidation according to the text?

    <p>Transfer high-potential electrons in catabolic reactions</p> Signup and view all the answers

    What is the ultimate electron acceptor in carbon oxidation?

    <p>O2</p> Signup and view all the answers

    Which molecule is an activated carrier of phosphoryl groups and is used to form ATP?

    <p>ATP</p> Signup and view all the answers

    What is the primary role of activated carriers of electrons for fuel oxidation?

    <p>Transfer high-potential electrons to O2</p> Signup and view all the answers

    What is the common reactive site in Coenzyme A for acyl group transfer?

    <p>Sulfhydryl group</p> Signup and view all the answers

    What drives thermodynamically unfavorable reactions by being coupled with them in metabolic pathways?

    <p>Activated carriers of electrons</p> Signup and view all the answers

    Which molecule has a higher affinity for electrons than fuel molecules but lower affinity than O2?

    <p>FADH2</p> Signup and view all the answers

    What is the function of nicotinamide adenine dinucleotide phosphate in reductive biosynthesis?

    <p>Provide high-potential electrons</p> Signup and view all the answers

    What drives a thermodynamically unfavorable reaction by being coupled with it in metabolic pathways?

    <p>Activated carriers of electrons</p> Signup and view all the answers

    What is the primary function of nicotinamide adenine dinucleotide phosphate in reductive biosynthesis?

    <p>High-potential electron donor</p> Signup and view all the answers

    Which molecule is involved in the transfer of acyl groups in both catabolism and anabolism?

    <p>Coenzyme A</p> Signup and view all the answers

    What is the common reactive site for acyl group transfer in Coenzyme A?

    <p>Terminal sulfhydryl group</p> Signup and view all the answers

    Which molecule has a higher affinity for electrons than fuel molecules but lower affinity than O2?

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

    What is the primary role of activated carriers of electrons for fuel oxidation?

    <p>Transfer electrons to O2</p> Signup and view all the answers

    What drives the thermodynamically unfavorable reaction in metabolic pathways?

    <p>Activated carriers of electrons</p> Signup and view all the answers

    Which molecule acts as an electron donor in most reductive biosynthesis processes?

    <p>NADPH</p> Signup and view all the answers

    What is the final electron acceptor in carbon oxidation?

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

    What type of reactions are characterized by the gain of electrons?

    <p>Reduction</p> Signup and view all the answers

    What is the primary function of nicotinamide adenine dinucleotide phosphate?

    <p>To accept high potential electrons for anabolic reactions</p> Signup and view all the answers

    Which molecule has a higher affinity for electrons than fuel molecules but lower affinity than O2?

    <p>FADH2</p> Signup and view all the answers

    What is the role of NADH, NADPH, and FADH2 in the absence of an enzyme according to the text?

    <p>React slowly with O2</p> Signup and view all the answers

    What drives thermodynamically unfavorable reactions by being coupled with them in metabolic pathways?

    <p>Activated carriers of electrons</p> Signup and view all the answers

    What is the common reactive site for acyl group transfer in Coenzyme A?

    <p>Terminal sulfhydryl group</p> Signup and view all the answers

    What is the primary role of activated carriers of electrons for the synthesis of biomolecules?

    <p>Transfer high-potential electrons for anabolic reactions</p> Signup and view all the answers

    What is the final electron acceptor in carbon oxidation?

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

    Which molecule acts as an electron donor in most reductive biosynthesis processes?

    <p>NADPH</p> Signup and view all the answers

    What type of reactions are characterized by the gain of electrons?

    <p>Reduction</p> Signup and view all the answers

    What is the common reactive site for acyl group transfer in Coenzyme A?

    <p>Thioester bonds</p> Signup and view all the answers

    What drives thermodynamically unfavorable reactions by being coupled with them in metabolic pathways?

    <p>ATP</p> Signup and view all the answers

    Which molecule has a higher affinity for electrons than fuel molecules but lower affinity than O2?

    <p>Nicotinamide adenine dinucleotide phosphate</p> Signup and view all the answers

    What is the primary function of activated carriers of electrons for fuel oxidation?

    <p>Making ATP</p> Signup and view all the answers

    What drives a thermodynamically unfavorable reaction by being coupled with it in metabolic pathways?

    <p>ATP</p> Signup and view all the answers

    What is the role of activated carriers of electrons for the synthesis of biomolecules?

    <p>Provide high potential electrons for anabolic reactions</p> Signup and view all the answers

    What do enzymes control in relation to the flow of free energy and reducing power according to the text?

    <p>The reaction rates</p> Signup and view all the answers

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