noun
biosynthesis
bye-oh-SIN-thuh-sis/bˌaɪoʊsˈɪnθɛsɪs/
The production of complex molecules by living cells or organisms.
The ribosome performs protein biosynthesis by joining amino acids into a chain.

Etymology
Synthesis is literally a “putting together,” extended to combining parts into a whole. The life component makes this chemical assembly the work of living cells.
In context
one of the things she works on is peptidoglycan biosynthesis.
More examples
- The experiment tracks an enzyme involved in biosynthesis.
- Plants use biosynthesis to produce many complex compounds.
- The mutation disrupts the biosynthesis of an essential molecule.
Similar words
- synthesis
- Production of compounds without necessarily a living organism.
- metabolism
- Includes both building up and breaking down substances.