Glucose Metabolic Pathways

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Questions and Answers

What is the common pathway where glucose and other carbohydrates are oxidized to pyruvate?

  • Glycolysis (correct)
  • Pentose phosphate pathway
  • Fatty acid synthesis
  • Citric acid cycle

Which amino acids are converted to pyruvate?

  • Glycine and glutamate
  • Threonine and tyrosine
  • Leucine and lysine
  • Alanine and serine (correct)

What is the enzyme responsible for oxidizing pyruvate to acetyl CoA?

  • Pyruvate dehydrogenase complex (PDC) (correct)
  • Aconitase
  • Citrate synthase
  • Pyruvate kinase

What inhibits PDC kinase?

<p>ADP and pyruvate (C)</p> Signup and view all the answers

What is the final step in all the major pathways of fuel oxidation?

<p>The citric acid cycle (B)</p> Signup and view all the answers

What activates PDC phosphatase?

<p>Ca2+ and ATP (D)</p> Signup and view all the answers

What is the location of the Krebs cycle reactions?

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

What type of reactions occur in the Krebs cycle?

<p>Oxidation–reduction reactions and decarboxylation reactions (C)</p> Signup and view all the answers

What is released during the Krebs cycle reactions?

<p>CO2 and H2O (C)</p> Signup and view all the answers

Who is named for the Krebs cycle?

<p>Hans Krebs (D)</p> Signup and view all the answers

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