How many ATPs are gained per sugar molecule in respiration H

How many ATPs are gained per sugar molecule in respiration? How about from an amino acid? How about from a fat molecule that has fatty acids that are 12 carbons long?

Solution

Answer:

1) Respiration involves,   1) Glycolysis, 2) Krebcycle and 3) Electron transport chain (ETC)

One glucose (glucose) oxidation gives 36 ATP during respiration.

2) Aminoacid are broken down into pyruvate and partcipate in the respiration, so 28 ATP are liberated during oxidation of pyruvate.

3) The oxidation of even numbered saturated fat is calculated as :

12 carbon fattyacid undergoes fattyacid oxidation and produces

5 FADH2, 5 NADH and 6 acetyl CoA

1 FADH2 oxidation in electron transport chain = 2 ATP,
1NADH oxidation in electron transport chain= 3ATP

5 FADH2, 5 NADH and 6 acetyl CoA

So, based on above information, it is caliculated as  

FADH2= 5x2 = 10

NADH2 = 5x3 = 15

Acetyl CoA = 6x12 = 72

                  = 97 ATP,

2ATP are used in activation of fattyacids.  

so finally,   95 ATP are produced in oxidation of 12 carbon fattyacid.