Transport and Rate Phenomena in Biological Systems. Redux. Molecules. They can only do two things: They react They move They are the most important elements in biological systems. Atoms acquire meaning only in molecules.
Molecular delivery is particularized by packaging what is to be delivered (message or material) so that only intended recipients are reached. Compare with path-particularized systems.
* If you are going to predict the future, do it often. J.K. Galbraith