Question

In anaerobic respiration, the number of ATP molecules produced is equal to

• A. 3
• B. 2
• C. 8
• D. 1

Answer 1

The correct option is B 2

Correct option is B)

Glucose can be metabolised aerobically or anaerobically (fermentation). If we compare fermentation and aerobic respiration we conclude that:

Fermentation accounts for only a partial breakdown of glucose whereas in aerobic respiration it is completely degraded to CO2​ and H2​O.

In fermentation there is a net gain of only two molecules of ATP for each molecule of glucose degraded to pyruvic acid, whereas many more molecules of ATP are generated under aerobic conditions.