Answer :

Xhade
ATP stands for denosine tri phosphate ..
formation:
it is formed in the respiration ..also 36 molecules of ATP are formed during break down of 1 glucose molecule ..
function:
its function is to provide energy  ,, 
how it provides energy:
when one phosphate molecule separate ATP is converted into ADP and energy is released..
and when one phosphate is separated from ADP AMP is formed and energy is released ..