There are two net molecules of ATP produced by substrate-level phosphorylation during glycolysis. (when one molecule of glucose is respired).
Two are used to convert the glucose molecule to fructose, but four are released when pyruvate is made.
However, the other products of glycolysis enable the Link Reaction, Krebs cycle and Oxidation Phosphorylation to happen, and these release a lot of ATP.
Four
Approximately 30-32 molecules of ATP are produced by oxidative phosphorylation for each glucose molecule that enters glycolysis.
2
It takes 3 carbon compounds produced for glycolysis and in glycolysis.
Glycolysis produces a net of 2 ATP molecules per glucose molecule.
4 molecules of ATP are produced per molecule of glucose in glycolysis, but 2 are needed (used, degraded, etc.) to start the reaction, so there is really only a net gain of 2 ATP in the process of glycolysis.
In anaerobic respiration, 2 ATP molecules are produced per glucose molecule through glycolysis.
Glycolysis produces a net gain of two ATP molecules per glucose molecule. However, four ATP molecules are actually produced during glycolysis, but two are used in the initial steps, resulting in a net gain of two ATP molecules.
During glycolysis, ATP is both consumed and produced. Two molecules of ATP are consumed in the initial steps of glycolysis to activate the glucose molecule. However, four molecules of ATP are then produced during the later steps, resulting in a net gain of two ATP molecules per glucose molecule metabolized.
In aerobic respiration, one glucose molecule typically produces 36-38 ATP molecules through glycolysis, the Krebs cycle, and the electron transport chain. In anaerobic respiration, such as fermentation, the number of ATP molecules produced is lower, around 2 ATP molecules.
In aerobic respiration, one molecule of glucose yields 38 ATP molecules, eight produced during glycolysis, six from the link reaction and 24 from the Krebs cycle. The net gain is 36 ATP, as two of the ATP molecules produced from glycolysis are used up in the re-oxidation of the hydrogen carrier molecule NAD. Therefore; There are 38 ATP molecules produced but net gain is 36 ATP
36 ATP molecules can be produced by 1 molecule of glucose. These 36 ATP molecules will complete cellular respiration.