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Bell Ringer

Explore the process of cellular respiration, from the purpose of photosynthesis to ATP production through glycolysis, Krebs Cycle, and electron transport chain. Understand aerobic and anaerobic respiration, types of fermentation, and key concepts like reactants and products. Prepare for a quiz with a summary review and independent practice assignments. Master the stages, equations, and outcomes of cellular respiration to ace your biology exam.

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Bell Ringer

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  1. Bell Ringer • Prepare for quiz at bell.

  2. Cellular Respiration • Biology • January 29, 2014

  3. Review • What’s the purpose of Photosynthesis? • What’s the final product of Photosynthesis?

  4. What is Cellular Respiration? • The process of converting sugar (Glucose) into energy (ATP). • Overall equation: • C6H12O6 + 6O2 —> 6CO2 + 6H2O + Energy (ATP) • Glucose + Oxygen —> Carbon Dioxide + Water + Energy • What’s the equation for Photosynthesis?

  5. 2 Types • Anaerobic Respiration • Does NOT require Oxygen • Produces 2 ATP • Occurs in cytoplasm. • Aerobic Respiration • Requires Oxygen • Produces 36 ATP • Occurs in eukaryotic cells’ mitochondria and cytoplasm.

  6. 3 Stages • Glycolysis • What does this word mean? • The Krebs Cycle • Electron Transport Chain

  7. 1. Glycolysis • Glyco (Sugar) + Lysis (Break Down) • Occurs in the cytoplasm • Split Glucose up into 2 molecules of Pyruvic Acid • Makes 2 ATP • Uses up 2 ATP, but makes 4 ATP = 2 ATP • Sends off electrons ****More on this later.

  8. 2. The Krebs Cycle • Occurs in the mitochondrial matrix. • Takes and breaks down Pyruvic acid from Glycolysis, and produces Carbon Dioxide (CO2). • Makes 2 ATP • Sends off electrons

  9. Electron Carriers are like busses. • 2 Types • NADH • FADH2 • They carry electrons to the electron transport chain, which will be used to make ATP.

  10. 3. Electron Transport Chain • Occurs in the intermembrane space (cristae) of mitochondrion. • Starts with electrons (which build up inside the matrix) • Requires Oxygen • Produces Water • Produces 32 ATP

  11. Summary

  12. Review • Cellular respiration is called aerobic, because it requires what? • How many ATP does Glycolysis produce? • Where does Glycolysis take place? • What’s the purpose of electron carriers? • What’s a waste product of cellular respiration? • What’s the overall equation for cellular respiration?

  13. 2 Types • Anaerobic Respiration • Does NOT require Oxygen • Produces 2 ATP • Occurs in cytoplasm. • Aerobic Respiration • Requires Oxygen • Produces 36 ATP • Occurs in eukaryotic cells’ mitochondria and cytoplasm.

  14. 2 Types of Anaerobic Respiration • Alcoholic Fermentation • Starts with Glycolysis • Occurs in yeast, plants, and other one-celled organisms. • Produces 2 ATP and ethyl alcohol • Lactic Acid Fermentation • Starts with Glycolysis • Occurs in animal muscle cells and some one-celled organisms. • Produces 2 ATP and Lactic Acid • Produces soreness when it builds up in your muscles.

  15. FOLDABLES

  16. TABS

  17. What Happens • The cell breaks down sugar (Glucose) to make energy (ATP).

  18. Occurs Where? • Cytoplasm -> Glycolysis • Mitochondria -> Matrix (The Krebs Cycle) • -> Intermembrane Space (ETC)

  19. Glycolysis • Occurs in Cytoplasm • Splits Glucose • Makes 2 molecules of Pyruvic Acid • Makes 2 ATP • Sends off electrons

  20. The Krebs Cycle • Occurs in the Mitochondrial Matrix • Breaks down pyruvic acid and produces CO2 • Makes 2 ATP • Sends off electrons

  21. Electron Transport Chain • Occurs in the intermembrane space (cristae) of mitochondria • Starts with electrons • Requires oxygen • Produces water • Makes 32 ATP

  22. Reactants • Sugar (Glucose) • Oxygen

  23. Products • Water (H2O) • Carbon Dioxide (CO2) • Energy (ATP)

  24. Overall Equation • C6H12O6 + 6O2 —> 6CO2 + 6H2O + Energy (ATP)

  25. Review

  26. Independent Practice • Complete chapter 4 vocabulary, and show for a grade. -> DUE TODAY • Chapter 4 vocabulary worksheet (due Thursday). • Complete study guide (due Thursday). • Study foldable and ATP notes for review game. Chapter 4 Vocabulary Quiz TOMORROW.

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