Quick Answer: Why Is ATP 36 Or 38?

Why do we use 36 ATP instead of 38?

1 molecule of ATP is produced by substrate level phosphorylation.

So, total molecules of ATP produced by 1 molecule of pyruvic acid during krebs cycle = 12+2+1 =15.

In the mitochondrion, glucose is completely broken down into carbon dioxide and water and 36 ATP.

So total ATP produced is 38 ATP..

How 36 ATP are formed?

Electron transport system captures the energy of electrons to make ATP. … Total ATP production from aerobic respiration: 36 ATPs for each glucose that enters glycolysis (2 from glycolysis, 2 from citric acid cycle, 32 from ETP).

Does glycolysis produce 36 ATP?

In eukaryotic cells, the theoretical maximum yield of ATP generated per glucose is 36 to 38, depending on how the 2 NADH generated in the cytoplasm during glycolysis enter the mitochondria and whether the resulting yield is 2 or 3 ATP per NADH.

Why the number of ATP is not known exactly?

There are three reasons that we cannot state an exact number of ATP molecules generated by one molecule of glucose. Phosphorylation and the redox reactions are not directly coupled to each other, so the ratio of number of NADH to number of ATP is not a whole number.

Does glycolysis require oxygen?

Glycolysis requires no oxygen. It is an anaerobic type of respiration performed by all cells, including anaerobic cells that are killed by oxygen. For these reasons, glycolysis is believed to be one of the first types of cell respiration and a very ancient process, billions of years old.

How many ATP is equal to NADH?

3 AtpsIn Glycolysis, theres is essentially 4 ATPS formed (net profit of 2), but according to standard conversions ( 3 Atps equal about 1 NADH), so why isn’t there 6 ATPS formed in Glycolsys, with a net profit of 4 ATPS.

How many ATP are used in anaerobic respiration?

Aerobic vs anaerobic respirationAerobicAnaerobicLocationCytoplasm (glycolysis) and mitochondriaCytoplasmStagesGlycolysis (anaerobic), Krebs cycle, oxidative phosphorylationGlycolysis, fermentationATP producedLarge amount (36 ATP)Small amount (2 ATP)2 more rows

Why do prokaryotes produce 38 ATP?

Sure. In prokaryotes the usual figure is 38. Per glucose, you get 2 net ATPs from glycolysis. … We generally say that you get 3 ATPs per NADH and 2 per FADH2, so that these carriers produce a total of 30+4 = 34 ATPs….. and the Krebs cycle itself produces 2 GTPs, which are equivalent to 2 more ATPs, for a total of 38.

Why is the actual yield of ATP likely to be lower in a cell?

In the last stage of respiration, some protons leak through the inner mitochondrial membrane back inside the matrix, so proton motive force which spins the headpiece of ATP synthase to produce ATP is decreased, hence less ATP produced.

How do you get 38 ATP from glucose?

Biology textbooks often state that 38 ATP molecules can be made per oxidized glucose molecule during cellular respiration (2 from glycolysis, 2 from the Krebs cycle, and about 34 from the electron transport system).

How many ATP are in etc?

Where does the figure of 30-32 ATP come from? Two net ATP are made in glycolysis, and another two ATP (or energetically equivalent GTP) are made in the citric acid cycle….ATP yield.StageDirect products (net)Ultimate ATP yield (net)2 FADH 23 ATPTotal30-32 ATP5 more rows

How many ATP are produced in glycolysis?

2 ATPDuring glycolysis, glucose ultimately breaks down into pyruvate and energy; a total of 2 ATP is derived in the process (Glucose + 2 NAD+ + 2 ADP + 2 Pi –> 2 Pyruvate + 2 NADH + 2 H+ + 2 ATP + 2 H2O).