Tempeh mold needs oxygen. The yeast need this oxygen to multiply successfully. Oxygen is rapidly absorbed from the wort during the lag phase. This makes it very hard for excessive oxygen to saturate into the wine and cause oxidation. The yeasts we use for beer and wine go through aerobic and anaerobic phases (aerobic builds the population up, then anaerobic makes the booze). In yeast, the anaerobic reactions make alcohol, while in your muscles, they make lactic acid. A lot of CO2 gas from the fermentation is infused within the wine must at this point. The term Aerobic fermentation is a misnomer since fermentation is anaerobic, i.e., it does not require Oxygen. Fermentation is an anaerobic process, meaning it does not require oxygen in order to occur. Fermentation occurs in the absence of oxygen (anaerobic conditions), and in the presence of beneficial microorganisms (yeasts, molds, and bacteria) that obtain their energy through fermentation. A) Fermentation involves the citric acid cycle. Lactic acid fermentation is anaerobic, and you don't want oxygen getting in there. B) Fermentation does not require oxygen. C) Fermentation can produce lactic acid. It is important to introduce enough oxygen into wort at the beginning of fermentation. There's no single answer. However, even when oxygen is abundant, yeast cells prefer fermentation to aerobic respiration, provided a sufficient supply of sugar is available. Fermentation starts with glycolysis, which does not require oxygen, but it does not involve the latter two stages of aerobic cellular respiration (the Krebs cycle and electron transport). Which of the following statements about fermentation is NOT true? CO2 is also coming off the fermentation as a gas. To do this breeding yeast devours dissolved oxygen in your fermenting wine. The yeast need this oxygen to grow and to produce important cell wall constituents. Fermentation Facts . Metabolism without Oxygen: Fermentation In aerobic respiration, the final electron acceptor for the electron transport chain is an oxygen molecule, O 2.If aerobic respiration occurs, then approximately 30 molecules of ATP will be produced during the electron transport chain and chemiosmosis using the energy of the high-energy electrons carried by NADH or FADH 2 to the electron transport chain. E) Fermentation can produce alcohol. Thus, aerobic fermentation does not actually refer to a fermentation process; this process refers to the process of cellular respiration. The main difference between lactic acid and alcoholic fermentation is that lactic acid fermentation produces lactic acid molecules from pyruvate whereas alcoholic fermentation produces ethyl alcohol and carbon dioxide. 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