Cellular Metabolism Overview
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Questions and Answers

What is the definition of catabolism?

  • The process of synthesizing larger molecules from smaller ones.
  • The process of breaking down large nutrient molecules into smaller molecules with the concurrent production of energy. (correct)
  • The sum of all chemical reactions involved in maintaining the dynamic state of a cell or organism.
  • A series of biochemical reactions.

    • Which process involves the conversion of glucose to Pyruvic Acid?

  • Glycolysis (correct)
  • Krebs cycle
  • The citric acid cycle
  • Electron transport chain

    • What is the function of NAD+/NADH in cellular metabolism?

  • Transfer of electrons in biological oxidation-reduction reactions (correct)
  • Storage and transfer of phosphate groups
  • Transfer of acetyl groups
  • Synthesis of larger molecules

    • Which compound is considered the most important in the transfer of phosphate groups in metabolism?

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

    What does Coenzyme A (CoA) primarily facilitate the transfer of in metabolism?

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

    In which process are two phosphoric anhydride bonds and one phosphoric ester bond found?

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

    Which molecule is oxidized in step 7 of the citric acid cycle?

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

    Which enzyme catalyzes the formation of succinyl CoA in the citric acid cycle?

    <p>α-Ketoglutarate dehydrogenase</p> Signup and view all the answers

    What molecule is produced by the oxidation of succinate in the citric acid cycle?

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

    What is the product when a phosphate group is transferred to ADP in the citric acid cycle?

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

    Which compound is regenerated in the last step of the citric acid cycle?

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

    Where is the enzyme that carries out the oxidation of succinate to fumarate located?

    <p>Inner membrane of the mitochondrion</p> Signup and view all the answers

    What is the function of acetyl CoA in cellular respiration?

    <p>Transport the acetyl group to the citric acid cycle</p> Signup and view all the answers

    Which molecule is produced by the oxidation of the two-carbon molecule in pyruvate?

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

    Where does the Krebs Cycle (TCA cycle) occur within the cell?

    <p>Mitochondrial matrix</p> Signup and view all the answers

    What is the main purpose of the Krebs Cycle in cellular respiration?

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

    In the context of cellular respiration, what role does Coenzyme A (CoA) play?

    <p>Acts as an energy carrier</p> Signup and view all the answers

    Which molecule is not directly involved in the production of ATP in the TCA cycle?

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

    What is the role of NAD+ in cellular respiration?

    <p>Acts as an oxidizing agent</p> Signup and view all the answers

    Which molecule is reduced to NADH?

    <p>NAD+</p> Signup and view all the answers

    What is the function of Coenzyme A in cellular respiration?

    <p>Carries acetyl groups</p> Signup and view all the answers

    Where does glycolysis occur in eukaryotic cells?

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

    What is the net gain of ATP molecules from glycolysis?

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

    What is the main function of the electron transport chain in cellular respiration?

    <p>To create an electrochemical gradient for the production of ATP</p> Signup and view all the answers

    Which protein complex in the electron transport chain is responsible for pumping four hydrogen ions across the membrane?

    <p>Complex I</p> Signup and view all the answers

    What is the role of flavin mononucleotide (FMN) in the electron transport chain?

    <p>To carry electrons to Complex I</p> Signup and view all the answers

    Where specifically does the electron transport chain take place within the cell?

    <p>Mitochondria inner membrane</p> Signup and view all the answers

    Which molecule is directly received by Complex II in the electron transport chain?

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

    What is a prosthetic group in the context of the electron transport chain?

    <p>A non-protein molecule required for a protein's activity</p> Signup and view all the answers

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