by doing it a step at
             a time, very slowly, living things can (a) trap some of that energy in a form (usually
             adenosine triphosphate or 'ATP') which can be used as needed to drive chemical reactions
             inside cells and (b) use some of the food breakdown products to make proteins, DNA,
             cell wall materials and other things the body needs for maintenance and growth.
             However, the process isn't all that efficient. and a lot of the energy is still lost as
             ...