organic molecules characteristics: 1) Based on carbon. carbon atoms gives the ability to do long chains, branches and rings.2) form from few elements. 99.4 % carbon, hydrogen, nitrogen, and oxygen, 0.2% phosphorous, 0.2% calcium, and 0.2% all other elements. 3) modular structures form from simple buildings blocks.rganic molecules are the chemicals of life, compounds composed of more than one type of element, that are found in, and produced by, living organisms. The feature that distin … guishes an organic from inorganic molecule is that organic contain carbon-hydrogen bonds, whereas inorganic molecules do not.