Metabolism: Glycolysis Step 6 Quiz

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Questions and Answers

What is the total number of ATP molecules generated through oxidative phosphorylation per NADH molecule?

  • 8 ATP
  • 4 ATP
  • 2 ATP (correct)
  • 6 ATP

In which step of the Krebs cycle is FADH2 produced?

  • Step 5
  • Step 7
  • Step 4 (correct)
  • Step 13

What is the role of NADH and FADH2 in cellular respiration?

  • Participate in glycolysis
  • Synthesize glucose in the Krebs cycle
  • Facilitate substrate-level phosphorylation
  • Act as electron donors in the electron transport chain (ETC) (correct)

Where does the conversion of pyruvate into acetyl-CoA occur in cellular respiration?

<p>Krebs cycle (B)</p> Signup and view all the answers

What is the final product formed from the oxidation of acetyl-CoA in the Krebs cycle?

<p>Carbon dioxide (CO2) (D)</p> Signup and view all the answers

How many ATP molecules are generated from a single molecule of glucose through cellular respiration?

<p>~38 ATP (B)</p> Signup and view all the answers

Which of the following is the correct order of steps in glycolysis?

<p>Hexokinase, Phosphoglucose isomerase, Aldolase, Triose phosphate isomerase, Phosphofructokinase, Glyceraldehyde 3-phosphate dehydrogenase, Phosphoglycerate kinase, Phosphoglycerate mutase, Enolase, Pyruvate kinase (D)</p> Signup and view all the answers

What is the primary function of the glyceraldehyde 3-phosphate dehydrogenase enzyme in glycolysis?

<p>To oxidize the substrate and produce NADH (B)</p> Signup and view all the answers

Which of the following enzymes is responsible for the substrate-level phosphorylation step in glycolysis?

<p>Phosphoglycerate kinase (C)</p> Signup and view all the answers

What is the end product of glycolysis?

<p>Pyruvate (A)</p> Signup and view all the answers

Which enzyme is responsible for the cleavage of a six-carbon sugar molecule into two three-carbon molecules during glycolysis?

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

What is the primary function of the enolase enzyme in glycolysis?

<p>To rearrange the atoms of the substrate molecule (C)</p> Signup and view all the answers

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