Cellular respiration gives a much greater yield of ATP than alcoholic fermentation. Here's why:

* Cellular respiration is the complete breakdown of glucose in the presence of oxygen. It involves four main stages: glycolysis, the Krebs cycle, electron transport chain, and oxidative phosphorylation. This process yields a net of 36-38 ATP molecules per glucose molecule.

* Alcoholic fermentation is an anaerobic process that occurs in the absence of oxygen. It only involves glycolysis, followed by the conversion of pyruvate to ethanol and carbon dioxide. This process yields only 2 ATP molecules per glucose molecule.

In summary:

* Cellular respiration: 36-38 ATP

* Alcoholic fermentation: 2 ATP

This significant difference in ATP yield highlights the importance of oxygen in maximizing energy production from glucose.