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Notes 7.2 – Aerobic and Anaerobic Respiration

Notes 7.2 – Aerobic and Anaerobic Respiration. Cell Respiration Part 2 Page 131. Standards. CLE 3210.3.3 Investigate the relationship between the processes of photosynthesis and cellular respiration.

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Notes 7.2 – Aerobic and Anaerobic Respiration

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  1. Notes 7.2 – Aerobic and Anaerobic Respiration Cell Respiration Part 2 Page 131

  2. Standards • CLE 3210.3.3 Investigate the relationship between the processes of photosynthesis and cellular respiration. • SPI 3210.3.3 Compare and contrast photosynthesis and cellular respiration in terms of energy transformation.

  3. Objectives • Identify the reactants and products of the Krebs Cycle • Evaluate situations when a cell must use anaerobic vs. aerobic respiration • Identify the reactants and products of the Electron Transport Chain • Summarize the major events in aerobic and anaerobic respiration

  4. Find a Partner

  5. With your Partner: • Review Glycolysis: • Reactants: • Products: • Location: Glucose, 2 ATP and NAD+ Pyruvate , H2O, 4 ATP, and NADH Cytosol

  6. Pyruvate Aerobic Respiration (mitochondria) Fermentation (cytosol) Review: What happens to Pyruvate? • Two possible paths: Few ATP Lots of ATP

  7. Overview of Aerobic Respiration • Two Main Parts: Krebs Cycle (citric acid cycle) – uses pyruvate Electron Transport Chain – uses NADH

  8. Krebs Cycle – (citric acid cycle) • Reactants: • Products: Pyruvate (pyruvic acid) ATP – goes into cytosol CO2 – is released NADH2 – Goes to ETC (electron transport chain)

  9. Electron Transport Chain (ETC) • Reactants: • Products: NADH2 ; FADH2 oxygen 34 ATP molecules 2 molecules H2O

  10. With your Partner • Which reaction provides the greatest net gain of ATP?

  11. Energy Gain

  12. With your Partner • Even though plant cells make some ATP during photosynthesis why do they need cell respiration as well?

  13. What happens when cells are without oxygen? • Fermentation (Anaerobic Respiration)

  14. With your Partner • Brainstorm some situations when a cell could be devoid of Oxygen

  15. Fermentation (anaerobic) • Two types of fermentation: • Lactic Acid fermentation: • Alcohol fermentation: • ATP Yield = 2 Performed by human muscle cells and some microorganisms - used to make cheeses, yogurt, sour cream. Performed by some microorganisms – used to make ethyl alcohol.

  16. With your Partner: • Determine what all of these have in common.

  17. Exit Ticket • m.socrative.com • Room: stewart348

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