Which of the following is the best definition of an unsaturated fatty acid? A. An insoluble compound made up of glycerol and three fatty acids
B. A compound that carries hereditary information
C. A basic unit of a lipid that consists of single and double carbon-to-
carbon bonds
D. A basic unit of a lipid that consists of only single carbon-to-carbon
bonds

C. A basic unit of a lipid that consists of single and double carbon-to-

carbon bonds

Explanation:

Cells are composed of water, inorganic ions, and carbon-containing (organic) molecule, compounds belong to one of four classes of molecules: carbohydrates, lipids, proteins, and nucleic acids. These simple sugars, such as glucose, are the major nutrients of cells. Unsaturated fatty acids contain one or more double bonds between carbon.

OR

A fatty acid, such as oleic acid, whose carbon chain possesses one or more double or triple bonds and hence can incorporate additional hydrogen atoms.

answer; philip morin freneau

c. had saved colonel cresap's family from attack by other native americans.