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 and doesn't require oxygen. Neither alcohol fermentation nor aerobic respiration require light - energy. Only alcohol fermentation produces alcohol. Glycolysis is the first step of both alcohol fermentation and aerobic respiration.

Answer:

Both start with glycolysis.