Question

which is a similarity between alcohol fermentation and aerobic respiration?
both require oxygen.
both require light energy.
both start with glycolysis.
both produce alcohol.

Explanation:

• Alcohol fermentation is an anaerobic process (does not require oxygen), while aerobic respiration requires oxygen. So the option “Both require oxygen” is incorrect.
• Neither alcohol fermentation nor aerobic respiration requires light energy. Light energy is relevant in processes like photosynthesis. So the option “Both require light energy” is incorrect.
• Alcohol fermentation produces alcohol (and carbon dioxide), while aerobic respiration produces carbon dioxide and water. So the option “Both produce alcohol” is incorrect.
• Glycolysis is the first stage of both alcohol fermentation (as the initial part of anaerobic respiration) and aerobic respiration. It breaks down glucose into pyruvate.

Answer:

Both start with glycolysis.