Question

Which of the following statements is true about Escherichia coli?

In aerobic conditions, it will undergo respiration; in anaerobic conditions, it will undergo fermentation.

E. coli cannot survive in anaerobic conditions.

In anaerobic conditions, it will undergo respiration; in aerobic conditions, it will undergo fermentation.

E. coli cannot survive in aerobic conditions.

Answer 1

Answer:

Fermentation products contain chemical energy (they are not fully oxidized), but are considered waste products, since they cannot be metabolized further without the use of oxygen. Fermentation normally occurs in an anaerobic environment. In the presence of O2, NADH, and pyruvate are used to generate ATP in respiration.