cellular respiration glycolysis + anaerobic or aerobic processes

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Cellular Respiration Glycolysis + Anaerobic or Aerobic Processes

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If no oxygen…then Fermentation! Lactic Acid Fermentation Microorganisms (Bacteria) and Muscles Results in NAD + for glycolysis…

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Page 1: Cellular Respiration Glycolysis + Anaerobic or Aerobic Processes

Cellular Respiration

Glycolysis + Anaerobic or Aerobic Processes

Page 2: Cellular Respiration Glycolysis + Anaerobic or Aerobic Processes

Glycolysis

• First step of cellular respiration• Occurs in the cytoplasm [Cytosol]

Net Yield = 2 ATPWhat about the pyruvic acid?

Page 3: Cellular Respiration Glycolysis + Anaerobic or Aerobic Processes

If no oxygen…then Fermentation!

• Lactic Acid Fermentation• Microorganisms (Bacteria) and Muscles• Results in NAD+ for glycolysis…

Page 4: Cellular Respiration Glycolysis + Anaerobic or Aerobic Processes

or

• Alcoholic Fermentation• Some plant cells & unicellular organisms (yeast)

Page 5: Cellular Respiration Glycolysis + Anaerobic or Aerobic Processes

Glycolysis + Fermentation:

• Good News = Continued production of ATP• Bad News = Only enough energy

for unicellular and very small multicellular organisms

* What is a more efficient process?

Page 6: Cellular Respiration Glycolysis + Anaerobic or Aerobic Processes

Glycolysis + Aerobic Respiration

• Must add oxygen!

Page 7: Cellular Respiration Glycolysis + Anaerobic or Aerobic Processes

Aerobic Respiration

• Produces nearly 20 times as much ATP as glycolsis alone

• Two Stages: 1. Krebs Cycle2. Electron Transport Chain (w/ chemiosmosis)

Page 8: Cellular Respiration Glycolysis + Anaerobic or Aerobic Processes

Krebs Cycle (Citric Acid Cycle)

• Two “turns” breaks down the glucose and yields 2 ATP + CO2 waste

Page 9: Cellular Respiration Glycolysis + Anaerobic or Aerobic Processes
Page 10: Cellular Respiration Glycolysis + Anaerobic or Aerobic Processes

Electron Transport Chain (+ Chemiosmosis) = 34 ATP!

Page 11: Cellular Respiration Glycolysis + Anaerobic or Aerobic Processes

Cellular Respiration

Page 12: Cellular Respiration Glycolysis + Anaerobic or Aerobic Processes
Page 13: Cellular Respiration Glycolysis + Anaerobic or Aerobic Processes

Cellular Respiration + Photosynthesis