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Nov. 2 (aerobic vs. anaerobic)

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  • 1. Biology I Mr. Nettles
  • 2. Agenda – Wed., Nov. 2, 2011
    • Warm-Up: EOC Questions
    • Lesson: Anaerobic vs. Aerobic
    • Wrap-Up: Review Questions from Lesson
    • Homework: Summarization Worksheet (due at beginning of class tomorrow!)
    • Tomorrow: Review Day!!
    • Friday: Major Quiz!!
  • 3. Today’s Objectives
    • I will define aerobic and anaerobic respiration.
    • I will compare and contrast aerobic and anaerobic respiration.
  • 4.
    • binds to specific active sites
    • stores genetic information
    • transports amino acids to ribosomes
    • produces chromosomes for sexual reproduction
    What is the primary function of DNA In organisms? Warm-Up (Nov. 2)
  • 5.
    • lipids
    • proteins
    • nucleic acids
    • carbohydrates
    Which molecules store and transmit genetic information ? Warm-Up (Nov. 2)
  • 6.
    • swell when exposed to salt.
    • absorb the extra salt.
    • release water in the presence of salt.
    • lose oxygen when in contact with salt.
    A student notices that the lettuce in a salad wilts soon after salt is added. Wilting most likely occurs because the lettuce cells: Warm-Up (Nov. 2)
  • 7. Aerobic and Anaerobic Respiration
    • Cellular respiration is a type of aerobic respiration because it requires oxygen .
  • 8. Aerobic and Anaerobic Respiration
    • Cellular respiration occurs in three main parts .
    • Glycolysis
    • Krebs Cycle (citric acid cycle)
    • Electron Transport Chain
  • 9. Glycolysis
    • Glucose is broken down into pyruvic acid.
    • Two molecules of ATP and two molecules of NADH are formed for each molecule of glucose that is broken down.
    Aerobic and Anaerobic Respiration
  • 10. Krebs Cycle (citric acid cycle)
    • The Krebs Cycle produces six CO 2 (carbon dioxide) molecules, two ATP, eight NADH, and two FADH 2 .
    Aerobic and Anaerobic Respiration
    • The series of reactions in which pyruvic acid is broken down into carbon dioxide .
    • NADH and FADH 2 carry high-energy electrons .
  • 11. Krebs Cycle (citric acid cycle) Aerobic and Anaerobic Respiration
  • 12. Electron Transport Chain Aerobic and Anaerobic Respiration
    • NADH and FADH 2 release high-energy electrons (H + ) to produce ATP.
      • NADH becomes NAD +
      • FADH 2 becomes FAD
    • Uses ten NADH molecules from glycolysis and the Krebs Cycle to make 30 ATP .
    • Uses two FADH 2 molecules from the Krebs Cycle to make 4 ATP .
  • 13. Aerobic and Anaerobic Respiration
    • Summary of Cellular Respiration (Aerobic Respiration)
    Process What Happens? What’s Made? Glycolysis glucose breaks down into pyruvic acid 2 ATP 2 NADH Krebs Cycle pyruvic acid is broken down into carbon dioxide 2 ATP 8 NADH 2 FADH 2 Electron Transport Chain ATP is formed from the transport of high-energy electrons 34 ATP
  • 14. Aerobic and Anaerobic Respiration
    • Anaerobic Respiration does not require oxygen.
      • Only two ATP are produced
      • Two Types:
        • Lactic Acid Fermentation – used to make foods such as cheese and yogurt
        • Alcohol Fermentation – used to make beer and wine
  • 15.
    • What are are the three main stages of
    • cellular respiration ?
    Wrap-Up (Nov. 2)
    • How are aerobic respiration and anaerobic
    • respiration different?
    • Count the total number of ATP produced
    • from cellular respiration.
    • (Hint: Glycolysis + Krebs Cycle + Electron Transport Chain )