Catabolic vs
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Questions and Answers

During the TCA cycle, what is the initial reaction that occurs when the 2-carbon acetyl group of acetyl-CoA combines with a 4-carbon molecule?

  • Regeneration of oxaloacetic acid (OAA)
  • Formation of citric acid (TCA) (correct)
  • Formation of D-isocitrate
  • Formation of succinyl-CoA

    • How many NADH molecules are generated as a result of two turns of the TCA cycle from 1 glucose molecule?

  • 10 NADH
  • 8 NADH
  • 4 NADH
  • 6 NADH (correct)

    • What is the primary location where the TCA cycle occurs?

  • Intermembrane space
  • Nucleus
  • Cytoplasm
  • Mitochondrial matrix (correct)

    • What molecule is regenerated as a result of the oxidative reactions in the TCA cycle?

    <p>Oxaloacetic acid (OAA)</p> Signup and view all the answers

    What is the final product of the TCA cycle when two carbon molecules are oxidized to CO2?

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

    What is the 2-carbon molecule that combines with a 4-carbon molecule to start the TCA cycle?

    <p>Acetyl-CoA</p> Signup and view all the answers

    What is the TCA cycle also known as?

    <p>Citric acid cycle</p> Signup and view all the answers

    How many acetyl groups are required for two turns of the TCA cycle from 1 glucose molecule?

    <p>2 acetyl groups</p> Signup and view all the answers

    What is the molecule formed when the 2-carbon acetyl group combines with a 4-carbon molecule in the TCA cycle?

    <p>Citric acid (TCA)</p> Signup and view all the answers

    What are the reducing powers generated as a result of two turns of the TCA cycle from 1 glucose molecule?

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

    What is the total number of NADH molecules generated as a result of two turns of the TCA cycle from 1 glucose molecule?

    <p>8 NADH</p> Signup and view all the answers

    What is the molecule formed when the 2-carbon acetyl group combines with a 4-carbon molecule in the TCA cycle?

    <p>Citric acid</p> Signup and view all the answers

    During the TCA cycle, what is the initial reaction that occurs when the 2-carbon acetyl group of acetyl-CoA combines with a 4-carbon molecule?

    <p>Formation of citric acid</p> Signup and view all the answers

    What is the final product of the TCA cycle when two carbon molecules are oxidized to $CO_2$?

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

    What molecule is regenerated as a result of the oxidative reactions in the TCA cycle?

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

    What is the primary location where the TCA cycle occurs?

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

    What are the reducing powers generated as a result of two turns of the TCA cycle from 1 glucose molecule?

    <p>6 NADH, 2 FADH2</p> Signup and view all the answers

    What is the 2-carbon molecule that combines with a 4-carbon molecule to start the TCA cycle?

    <p>Acetyl-CoA</p> Signup and view all the answers

    What is the TCA cycle also known as?

    <p>Kreb's cycle</p> Signup and view all the answers

    How many acetyl groups are required for two turns of the TCA cycle from 1 glucose molecule?

    <p>2 acetyl groups</p> Signup and view all the answers

    How many NADH molecules are generated as a result of two turns of the TCA cycle from 1 glucose molecule?

    <p>10</p> Signup and view all the answers

    What is the total number of NADH and FADH2 molecules generated as a result of two turns of the TCA cycle from 1 glucose molecule?

    <p>10 NADH, 2 FADH2</p> Signup and view all the answers

    What is the molecule that combines with the 2-carbon acetyl group to start the TCA cycle?

    <p>Oxaloacetic acid (OAA)</p> Signup and view all the answers

    What is the TCA cycle also known as?

    <p>Citric acid cycle</p> Signup and view all the answers

    What is the final product of the TCA cycle when two carbon molecules are oxidized to $CO_2$?

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

    Where does the TCA cycle occur?

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

    How many acetyl groups are required for two turns of the TCA cycle from 1 glucose molecule?

    <p>2</p> Signup and view all the answers

    What is the primary function of the TCA cycle?

    <p>To oxidize acetyl-CoA and produce NADH and FADH2</p> Signup and view all the answers

    Which molecule is regenerated as a result of the oxidative reactions in the TCA cycle?

    <p>Oxaloacetic acid (OAA)</p> Signup and view all the answers

    What is the primary electron carrier that is reduced to NADH during the TCA cycle?

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

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