Melvin calvin and his colleagues noted that when 14co2 was added to algal cells, a single compound was radiolabeled within 5 seconds of exposure. what is the compound, and where does the radioactive label appear?

when atoms of different types of elements join together, they make molecules called compounds. water consists of compound molecules made up of 2 hydrogen atoms and 1 oxygen atom. this is why it's called h2o. water will always have 2 times the number of hydrogen atoms as oxygen atoms.