Question

Pyruvic acid, the key product of glycolysis can heve many matabolic fates. Under aerobic condition it forms
A. lactic acid
B. `CO_(2)+H_(2)O`
C. acetyl `Co-A+CO_(2)`
D. ethanol `+CO_(2)`

Answer 1

Correct Answer - B
Pyruvate, the porduct obtained through glycolysis, gets oxidised with the loss of its carboxy group as `CO_(2)`, to give acetyl Co-A, under aerobic condition. This acetyl Co-A is further oxidised completely to `CO_(2)+H_(2)O` in citric acid cycle. Other are incorrect as
Lactic acid is formed in muscles under anaerobic conditions.
Ethanol and `CO_(2)` are products of acaerobic respiration in yeast cells. `CO_(2)` and `H_(2)O` are final and complete reaction products released at the end of cellular respiration.