Carbon & Biological Molecules: What is Life Made Of?: Crash Course Biology #20

Despite the diverse appearance and characteristics of organisms on Earth, the chemicals that makeup living things are remarkably similar, often identical. In this episode of Crash Course Biology, we’ll look at the building blocks of the four major classes of biomolecules, how those join up to form macromolecules, and how a team of six atoms forms the vast majority of living matter.