What are the component mechanisms in Glycolsis involved in ATP going to ADP?

Question

A boiochemical-enzymatic explanation from Hexokinase leading up to Pyruvate Kinase is not necessary.

Answer 1

There is a net GAIN of ATP from the glycolytic pathway.

The use of ATP->ADP + Pi within the pathway is usually mediated by an enzyme:
- hexokinase in step 1
- phosphofructokinase in step 3

and the Pi is usually tacked on to the sugar.