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In some fatty acids, a pair of hydrogen atoms in the middle of a chain is missing, creating a gap fat black booty that leaves two carbon atoms connected by a double fat black booty bond rather than a single bond. Because the chain has fewer hydrogen atoms, it is said to be "unsaturated." A fatty acid with one double bond is called "monounsaturated" fat black booty because it has one gap. Fatty acids having more than one gap are called "polyunsaturated." The fat in foods contains a mixture of saturated, monounsaturated and polyunsaturated fatty acids. In foods of animal origin, a large proportion of fatty acids are saturated. In contrast, in foods of plant origin and some seafood, a large proportion of the fatty acids are monounsaturated and polyunsaturated. The structure of saturated and unsaturated chemical bonds looks like the diagram below.
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