Question

organisms which convert pyruvate into ethanol

Answer 1

 can also be used to construct the amino acid alanine, and it can be converted into ethanol. Pyruvic acid supplies energy to living cells through the citric acid cycle (also known as the Krebs cycle) when oxygen is present (aerobic respiration); when oxygen is lacking, it ferments to produce lactic acid.

Answer 2

First, pyruvate is decarboxylated (CO2leaves) to form acetaldehyde. Hydrogen atoms from NADH + H+ are then used to help convert acetaldehyde to ethanol. NAD+ results.Facultative anaerobes are organisms that can undergo fermentation when deprived of oxygen.