Question

can you tell me total no. of ATP in 1 glucose

Answer 1

Complete Glucose Oxidation follows :

Glycolysis (Glucose > 2Pyruvic Acid) - Here 2 ATPs are produced by substrate level phosphorylation and 2 NADH are also produced .Transition Step ( Pyruvic acid> Acetyl CoA). - Here 1 NADH is produced in this step. (But we had 2 Pyruvic Acid . So we have two 2NADH and 2Acetyl CoA produced in these steps)Krebs Cycle (This cycle will utilise 1 Acetyl CoA and will produce 1GTP, 3NADH & 1FADH2). But here again we have to oxidise complete 2 Acetyl CoA. So , 2GTP (equivalent to 2 ATP), 6NADH, 2FADH2.

Now calculating

ATP : 2+2 = 4

NADH : 2 +2+6 = 10

FADH2 : 2

4 . Last step in Glucose Oxidation is Oxidative Phosphorylation.

Here ,

1NADH after passing through electron carriers result in 3 ATP .

1FADH2 after passing through electron carriers result in 2 ATP.

So, 10 NADH = 30 ATP & 2 FADH2 = 4 ATP.

Again totaling ,

ATP : 2+2 = 4

NADH : 2 +2+6 = 10 ~ 30 ATP

FADH2 : 2 ~ 4ATP

NET : 38 ATP.

So , when 1 Glucose undergoes aerobic respiration , net 38 ATP are produce

Answer 2

38 molecule of ATP........