biochemistry

Etymology

From bio- + chemistry.

noun

1. (uncountable) The chemistry of those compounds that occur in living organisms, and the processes that occur in their metabolism and catabolism
2. (countable) The chemical characteristics of a particular living organism
   The biochemistries of fungal and bacterial cells are quite distinct.
   They [viruses] use more varied biochemistry than cellular life, storing their genetic information as both single- and double-stranded DNA as well as RNA. 2012, Caspar Henderson, The Book of Barely Imagined Beings, page 146
3. (countable) The biochemical activity associated with a particular chemical or condition
   Our study compared the biochemistries of epilepsy and Parkinson's.
   The biochemistry of NO differs from that of NO₂.