Aerobic Respiration Frustration!!

[emitpeels]

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I am pretty frustrated with aerobic respiration right now. I understand it, however, each different source provides a different amount of total ATP's created.

I understand from Glycolysis you get ... 2 NADH 2 ATP
From 2 pyruvate -- > 2 acetyl Coa ....... 2 NADH
From Kreb's you get --> 6 NADH 2 FADH2 2 GTP

This makes 10 NADH, 2 FADH2, and 2 ATP

10 x 3 = 30
2 x 2 = 4
+ 2 ATP = 36 ATP total

Do you count the GTP as ATP to get 38? Or leave it at 36?

Help!!!

 

[Illfavor]

Generally, I've read that bacteria make 38 ATP and animals make 36, and that the 2 lost is to transport NADH from the cytosol to the mitochondria. If you see this question asked, I would answer 36, and if the test makers put both 38/36 on there without any other specifics, then **** them.

 

[ktran17]

You count GTP as an ATP because their change in free energy are relatively the same.

GTPs are often converted to ATP via Nucleoside-diphosphate kinases (You don't need to know this though)

 

[paymaant]

Generally, I've read that bacteria make 38 ATP and animals make 36, and that the 2 lost is to transport NADH from the cytosol to the mitochondria. If you see this question asked, I would answer 36, and if the test makers put both 38/36 on there without any other specifics, then **** them.

I agree with this reasoning. However, the 2 ATP are lost to transport pyruvate into the mitochondria (rather than NADH as stated earlier). 🙂