What is true of unsaturated fatty acid chains? . a) they contain at least one double or triple bond.. b) they contain only single covalent bonds.. c) they are only made in the liver cells of animals.. d) they are less healthy than saturated fats.

The correct option is A. Unsaturated fatty acids contain at least one double bond or triple bond between adjascent molecules.They are usually found in plants. There are two types of unsaturation: 1. monosaturation: which meas that the fatty acid has only one double bond and 2. poly saturation: which means that the fatty acid has two or more double bonds. The higher the number of double bond, the higher the degree of unsaturation. Unsaturated fats are liquids at room temperature. Unsaturated fats in diets lowers the risks of cardiovascular diseases.