True about glycolysis

[Medicoman]

True about glycolysis

• 1. Hexokinase produce ATP
• 2. 1 cycle produces 2 ATP
• 3. It produces directly 2 molecules of lactic acid
• 4. Aldolase produces irreversible polymerization

ANS:

It produces directly 2 molecules of lactic acid

• Each cycle of anaerobic glycolysis produces 2 molecules of lactate (lactic acid) whereas in aerobic condition it produces 2 molecules of pyruvate.
• Option b is tricky one. Each glycolytic cycle produces 4 ATPs (not 2 ATPs). But out of these 4 ATPs, 2 are used in the cycle itself. Therefore, there is net gain of 2 ATPs. So,:-

1. Each cycle of glycolysis produces → 4 ATPs.
2. Each cycle utilizes → 2 ATPs
3. Net gain in each cycle → 2 ATPs
4. About other options
5. Hexokinase utilizes ATP (not produces ATP).
6. Aldolase produces reversible isomerization.