Metabolic activity, or the consumption of energy
through conversion of non-living materials into cellular
components

In the most basic sense, DNA controls anatomy (how things
are built) and physiology (how things work).

The most prominent
function of mitochondria is rooted in energy metabolism.
A set of reactions intimately involved in ATP
production (known as the citric acid cycle or Kreb’s
cycle) and the electron transport system occur within
the mitochondria.

snatch & the grey man