Which is a similarity between alcohol fermentation and aerobic respiration?

Both start with glycolysis.

A similarity between alcohol fermentation and aerobic respiration is that both started with glycolysis.

Explanation:

Alcohol fermentation is anaerobic process which involve the conversion of glucose into carbon dioxide and alcohol in the presence of yeast.

The first step is glycolysis which is same in both alcohol fermentation and aerobic respiration

Both produces the ATP. The number of ATP produced by alcohol fermentation are 2 while aerobic respiration produces 38 ATP.

Aerobic respiration

It is the breakdown of glucose molecule in the presence of oxygen to yield large amount of energy. Water and carbon dioxide are also produced as a byproduct.

Glucose + oxygen → carbon dioxide + water + 38ATP