What is fermentation

Question

Problem:

Question 1: Which of the following statements about fermentation is INCORRECT?

1. Aerobic bacteria will undergo fermentation instead of cellular respiration when oxygen is present.
2. Fermentation results in the production of fewer ATP molecules than cellular respiration.
3. End products of fermentation include carbon dioxide, ethanol, and acetic acid.
4. The presence of fermentation end products is useful in identifying unknown bacteria in the laboratory.
5. Fermentation is involved in the production of a number of foods including yogurt, sauerkraut, and cheese.

Please provide correct answer.