Question

Fermentation & Cellular Respiration (Lab-03) Alcohol is made in sealed containers (no O2). BRIEFLY discuss how Energy is created in EACH of the Three Cycles that would occur if the yeast containers were left open to air for the entire experiment. Do Not explain it using terms like "Acro- bic/Anaerobic" or "Cellular Respiration Fermentation". Do not explain fermentation or discuss what reast "Would Not Do" +Lab-03 OL Fermentation & Respiration 20-3

Answer 1

Answer:

• Alcohol may be produced in open vessels, and indeed it is in several cases, such as in bio-ethanol production and in red wine making.
• Since the alcoholic fermentation releases carbon dioxide, the gas prevents further contact with air during the most active phases of the fermentation.
• However, the use of closed vessels may enable a better quality control of the fermentation, specially in slower processes such as white wine or beer production.

Alternative metabolic routes following glycolysis are-

Glucose (60) t glycolysis "QNADT pyourate Alcoholic fermentatricen (30) DONADH aerobiosis Respiratory 2 anaerobiosis aethanol (20) nucten Alternative metabolic router following glycolysis

• Glucose is converted into pyruvic acid during glycolysis.
• When oxygen is available, pyruvic acid enters a series of chemical reactions (known as the tricarboxylic acid cycle) and proceeds to the respiratory chain.
• As a result of respiration, cells produce 36–38 molecules of ATP for each molecule of glucose oxidized.
• In the absence of oxygen (anoxygenic conditions), pyruvic acid can follow two different routes, depending on the type of cell.
• It can be converted into ethanol (alcohol) and carbon dioxide through the alcoholic fermentation pathway, or it can be converted into lactate through the lactic acid fermentation pathway

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