Question

During the respiration of an organism A, 1 molecule of glucose produces 2 ATP molecules whereas, in the respiration of another organism B, 1 molecule of glucose produces 38 ATP molecules.

(b) Which organism is undergoing anaerobic respiration?

Answer 1

Answer:
Organism A is undergoing anaerobic respiration because in anaerobic respiration, 1 molecule of glucose is incompletely broken down or oxidised into either lactic acid or ethanol and carbon dioxide, and along with it only 2 ATPs are generated.
1 Glucose → Lactic acid + 2 ATP
1 Glucose → $2C_2{H}_{5}OH\left(ethanol\right)+2C{O}_2+2ATP$