The rate dynamics in chemical or physical systems.
D010825
Physics
The study of those aspects of energy and matter in terms of elementary principles and laws. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)
Physic
D002468
Cell Physiological Phenomena
Cellular processes, properties, and characteristics.
Biological molecules that possess catalytic activity. They may occur naturally or be synthetically created. Enzymes are usually proteins, however CATALYTIC RNA and CATALYTIC DNA molecules have also been identified.