how many ATP are formed during glycolysis?

The pathway of glycolysis can be seen as consisting of 2 separate phases. The first is the chemical priming phase requiring energy in the form of ATP, and the second is considered the energy-yielding phase. In the first phase, 2 equivalents of ATP are used to convert glucose to fructose 1,6-bisphosphate (F1,6BP). In the second phase F1,6BP is degraded to pyruvate, with the production of 4 equivalents of ATP and 2 equivalents of NADH.

Total ATP produced during glycolysis=1  NADH2  =3ATP molecules  (In the formation of 1.3-diphosphoglyceric acid +  

                                                                   1 ATP     (In forming 3 phosphoglyceric acid)           +

                                                                   1 ATP   (In forming Pyruvic acid-last step)       ===5 ATP

From 2 pyruvic acid molecules ==10 ATP

Total AtP consumed in this process=1ATP   (in forming Glucose-6-phosphate)  + 1 ATP (in forming Fructose 1,6 diphosphate) ===2 ATP

Therefore net gain ===10-2=8ATP

if we say just during glycolysis then ans. will be 4 atp's but if we say during complete process of cellular respiration then ETS will be included so then we have to count the no. of  atp's formed by nadh2 also.so then ans. will be 4+6 =10 atp molecules

during glycolysis 4 ATP are formed by substrate level phsphorylation and from which 2 ATP are used in the glycolysis itself

hence total atp formed are 2ATP