1.2.1UN | Title | 01.02.01 | Caption | H2O, H2O2, and gamma globulin molecular models | Notes | A molecule of water consists of three atoms: two hydrogen atoms joined to a single oxygen atom. A molecule of hydrogen peroxide has two hydrogen atoms and two oxygen atoms; the two oxygen atoms are joined together and one hydrogen atom is attached to each oxygen atom. By contrast, a molecule of the blood protein gamma globulin is made up of 19,996 atoms altogether, but tehy are of just four types: carbon, hydrogen, oxygen, and nitrogen. | |