What is the word equation for the fermentation process of sugar using yeast?

The fermentation process of sugar using yeast primarily involves the breakdown of glucose, a simple sugar, into ethanol and carbon dioxide. This reaction occurs when yeast, which is a microorganism, converts sugars into alcohol (ethanol) and gas (carbon dioxide) in an anaerobic environment (absence of oxygen).

Glucose → Ethanol + Carbon Dioxide accurately represents this process. In the absence of oxygen, yeast efficiently ferments glucose, making it the correct choice.

In contrast to this option, sugar can refer to various forms of carbohydrates, and among the other options, the specific mention of glucose in this equation highlights the exact substrate used during fermentation. Ethanol and carbon dioxide are the typical byproducts of yeast fermentation, aligning with the known reactions in this biological process. Therefore, this option encapsulates the essential details of fermentation accurately.