Plural of biosynthesis; chemical processes in which living organisms build complex molecules like proteins, fats, and nucleic acids from simpler building blocks.
From 'bio-' (life) + 'synthesis' (combination or building, from Greek 'syn' + 'tithenai'). The term describes chemical construction specifically within living systems.
Your body doesn't just extract vitamin C from oranges—it has to break it down and rebuild it into forms it can use. These biosyntheses happen constantly, millions of reactions per second, turning food into you!
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