Download Fermentation anaerobic respiration

Fermentation
(anaerobic respiration)
•No oxygen
•Many different types
2 examples:
• Alcoholic fermentation – in yeast
Pyruvate  acetaldehyde + CO2 ethanol (alcohol)
• Lactic acid fermentation
– Animal cells (when no O2 available)
If no O2 then:
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NADH builds up
No NAD+ available
Glycolysis and Krebs shut down
But, fermentation allows glycolysis to occur (it
generates NAD+)
Glucose  lactic acid (in our muscles)
– Lactic acid builds up (muscle pain & fatigue)
– Oxygen debt