was first proposed by German physiologist Theodor Schwann (1810 - 1882) and is defined as the least number of physical and chemical processes with which an organism must maintain to maintain life using either catabolism, anabolism or protein metabolism for example.

METABOLISM: "Metabolism, quite simply, are the physical and chemical processes and reactions which occur within an organism, which allow it to stay alive and survive."
Cite this page: N., Pam M.S., "METABOLISM," in, April 7, 2013, (accessed September 18, 2021).