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Cell Respiration

Cell Respiration. Chapter 9. Cellular Respiration. Cellular Respiration. Questions. Is respiration exergonic or endergonic ? Why? Is fermentation exergonic or endergonic ? Why? Does respiration require enzymes? What are the 2 catabolic pathways? How do they differ?.

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Cell Respiration

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  1. Cell Respiration Chapter 9

  2. Cellular Respiration

  3. Cellular Respiration

  4. Questions • Is respiration exergonic or endergonic? Why? • Is fermentation exergonic or endergonic? Why? • Does respiration require enzymes? • What are the 2 catabolic pathways? • How do they differ?

  5. Questions Answers • Is respiration exergonic or endergonic? Why? Exergonic, releases energy as ATP and heat • Is fermentation exergonic or endergonic? Why? Exergonic, releases energy as ATP and heat • Does respiration require enzymes? Yes • What are the 2 catabolic pathways? Cellular Respiration & Fermentation (EtOH& Lactate) • How do they differ? Respiration requires O2 & Produces 18-19x ATP

  6. Questions (Page 2) • What are the 4 parts of cellular respiration? • Which of the parts produce ATP? • Which of the parts produce NADH? • Which part(s) of cellular respiration require oxygen?

  7. Questions (Page 2) Answers • What are the 4 parts of cellular respiration? Glycolysis, Pyruvate Oxidation, TCA, & Oxidative Phosphorylation • Which of the parts produce ATP? All but Pyruvate Oxidation • Which of the parts produce NADH? All but Oxidative Phosphorylation • Which part(s) of cellular respiration require oxygen? Only ETC (part of Oxidative Phosphorylation)

  8. Questions • What is Glycolysis? • What is produced in Glycolysis? • Where does Glycolysis occur in a eukaryotic cell? • Where does it occur in a prokaryotic cell?

  9. Questions Answers • What is Glycolysis? • Splitting of glucose into 2 pyruvates • What is produced in Glycolysis? • 2 ATP, 2 NADH, & 2 Pyruvate • Where does Glycolysis occur in a eukaryotic cell? • Cytoplasm or Cytosol • Where does it occur in a prokaryotic cell? • Cytoplasm or Cytosol

  10. Questions • What are the 4 Parts of Cellular Respiration? • What is the purpose of Pyruvate Oxidation? • What is produced in Pyruvate Oxidation? • For each glucose, how many pyruvate oxidations occur?

  11. Questions Answers • What are the 4 Parts of Cellular Respiration? • Glycolysis, Pyruvate Oxidation, TCA, & Oxidative Phosphorylation • What is the purpose of Pyruvate Oxidation? • To transport pyruvate into the mitochondrion • What is produced in Pyruvate Oxidation? • CO2, NADH or FADH2, & Acetyl CoA • For each glucose, how many pyruvate oxidations occur? • 2

  12. Questions (Page 2) • Where does the TCA cycle occur in a eukaryotic cell? • Where does it occur in a prokaryotic cell? • What are the 2 alternate names for the TCA cycle?

  13. Questions (Page 2) Answers • Where does the TCA cycle occur in a eukaryotic cell? • Mitochondria • Where does it occur in a prokaryotic cell? • Cytoplasm or Cytosol • What are the 2 alternate names for the TCA cycle? • Kreb’s Cycle, TriCarboxylic Acid, or Citric Acid Cycle

  14. Questions (Page 3) • For each glucose, how many turns of the TCA cycle occur? • Each turn of the TCA cycle produces how much: • CO2? • ATP? • NADH? • FADH2?

  15. Questions (Page 3) Answers • For each glucose, how many turns of the TCA cycle occur? • 2 • Each turn of the TCA cycle produces how much: • CO2? = 2 • ATP? = 1 • NADH? = 3 • FADH2? = 1

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