Question

How are cellular respiration and fermentation similar?

Answer 1

The cellular respiration is a metabolic reaction seen inside the cell the cellular respiration could be aerobic and anaerobic conditions.
Fermentation is also a chemically initiated metabolic reaction which is catalysed by many enzymes this method of fermentation undergoes in anaerobic conditions.

Complete answer:
The cellular respiration and the fermentation are seen in both plants and animal cells. And the chemical reaction for the fermentation and cellular respiration occurs in the cytoplasm of the cell with many enzymatic actions.
The cellular respiration and fermentation helps in the breaking of the glucose molecule which is called as the glycolysis for the production of energy in the form of ATP. The cellular respiration is observed with both anaerobic and aerobic conditions; it breaks the glucose molecules or undergoes glycolysis in the presence of oxygen.
The glucose taken through the food is broken down inside the cells followed by large chemical reactions to produce pyruvate or lactic acid in the presence and absence of the Oxygen whereas the fermentation is also the method of respiration just as cell respiration seen inside the cell.
It uses carbon dioxide to break the glucose molecules or undergo glycolysis just as cell respiration uses ATP for the mechanism but produces less number of ATP molecules as a result than in cell respiration.

Note: The cell respiration and fermentation in either way here in the glycolysis pathway and cellular mechanism. By using energy with a slight difference in producing products aerobic conditions and anaerobic conditions that are in the presence of oxygen and in the absence of oxygen. Both of the pathways are a series of reactions linked to produce and use energy to the cell.