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Question

What is anaerobic respiration? What happens during anaerobic respiration in yeast?

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Solution

Anaerobic respiration is a type of respiration that occurs in absence of O2. The end products are mostly lactic acid and alcohol. It involves the production of less energy only 2 ATP

C6H12O6 → Lactic acid /alcohol + energy

In the anaerobic respiration of yeast, pyruvate is converted to ethanol. Here pyruvate is decarboxylated to ethanol.
C6H12O6 ——> 2C2H5OH + 2CO2 + Energy
Glucose --> Ethanol + Carbon dioxide


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