The various kinds of proteins, polysaccharides and fats are broken down into their component building blocks, which are relatively few in number.*
Building block molecules
Common degradation product c acid cycle to er, carbon dioxide,
Metabolism accomplishes, among other things, the conversion of food energy into the energy of motion. Regulation of metabolism allows the abrupt transition from a state of rest to the breath-taking power and grace of athletic competition.
(European champs by Paul J. Sutton/Duomo; line art by J/B Woolsey Associates)
All is flux, nothing stays still. Nothing endures but change.
Was this article helpful?