9.5 types of fermentation

Question 1

alcohol fermentation

Answer 1

pyruvate converted to ethanol
--1 CO2 released from pyruvate
and is converted to acetaldehyde
2- acetaldehyde is reduced by NADH to ethanol 
NAD+ is produced

Question 2

lactic acid fermentation

Answer 2

pyruvate is reduced to make lactate

• no release CO2
• lactate is converted back to pyruvate in the liver