EVERYDAY SCIENCE

Detailed explanation-1: -In the fermentation process, specific organisms break down organic compounds(carbohydrates) in the absence of oxygen to release energy and produce carbon dioxide and alcohol. Yeast carries out fermentation, breaking down sugar in the absence of oxygen to produce carbon dioxide and ethanol.

Detailed explanation-2: -So, the correct answer is ‘Ethanol’.

Detailed explanation-3: -In the presence of oxygen, yeast undergo aerobic respiration and convert carbohydrates (sugar source) into carbon dioxide and water. In the absence of oxygen, yeasts undergo fermentation and convert carbohydrates into carbon dioxide and alcohol (Figure 2).

Detailed explanation-4: -Alcoholic fermentation is a complex biochemical process during which yeasts convert sugars to ethanol, carbon dioxide, and other metabolic byproducts that contribute to the chemical composition and sensorial properties of the fermented foodstuffs.

Detailed explanation-5: -Once the yeast and sugar have dissolved, pour the mixture into the bottle. You’ll notice the water bubbling as the yeast produces carbon dioxide. 4.