Q. How many ATP molecules are obtained from fermentation of 1 molecule of glucose?
A) 2
B) 4
C) 3
D) 5
Explanation
During alcoholic fermentation of glucose molecule, pyruvic acid is first decarboxylated to form acetaldehyde and CO₂, which is then changed to ethyl alcohol with help of NADH. Net gain is 2ATP molecules per glucose molecule. $C_{6}H_{12}O_{6}$ +2ADP + 2Pi $\ \rightarrow$ 2$C_{2}H_{5}$OH Glucose Ethyl alcohol + 2$CO_{2}$ +2ATP +2$H_{2}$O
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.