Multiple choice

Fermentation of sugar by yeasts produces ______ and carbon dioxide.

  1. methyl alcohol

  2. ethyl alcohol

  3. ethane

  4. methane

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

During anaerobic respiration, yeast cells convert sugars into ethanol (ethyl alcohol) and carbon dioxide. This process is known as alcoholic fermentation. Methyl alcohol is toxic and is not the product of standard yeast fermentation.