NEET
- Exam
- NEET
- Subject
- Botany
- Chapter
- Respiration in Plants
NEET · Botany · Respiration in Plants
How does glucose breakdown in fermentation compare to aerobic...
How does glucose breakdown in fermentation compare to aerobic respiration?
Options
- AIt is completely broken down in both processes
- BIt is only partially broken down in fermentation, but completely in aerobic respiration
- CIt is completely broken down in fermentation, but only partially in aerobic respiration
- DIt is equally broken down in both processes
Correct answer
B. It is only partially broken down in fermentation, but completely in aerobic respiration
Step-by-step solution
Fermentation accounts for only a partial breakdown of glucose whereas in aerobic respiration it is completely degraded to CO₂ and H₂O. 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. NADH is oxidized to NAD+ rather slowly in fermentation, however the reaction is very vigorous in case of aerobic respiration