Different celestial objects produce different types of spectra. The spectrum of an object is one means of identifying what type of object it is. How different spectra arise is shown in the schematic diagram below.
After a simple reaction breaking down ATP to ADP, the energy released from the breaking of a molecular bond is the energy we use to keep ourselves alive. When the phosphate group is removed. After a simple reaction breaking down ATP to ADP, the energy released from the breaking of a molecular bond is the energy we use to keep ourselves alive.
ATP works like a rechargeable battery. Energy can be released by converting ATP to ADP, which is the uncharged form. Likewise, by binding to a third phosphate group, ADP can be converted back to ATP, the charged form. When you eat lunch, many complex chemical reactions occur.