The following series of three reactions occurs in the metabolic pathway known as the b-o...

The following series of three reactions occurs in the metabolic pathway known as the b-oxidation of fatty acids (Section 20.5). Fatty acids are metabolized by this pathway to produce energy. In the following structural formulas, the symbol CoA stands for coenzyme A, an organic molecule involved as a cofactor in many biological reactions. Note that coenzyme A is bound to the fatty acid chain as a thioester, that is, an ester in which oxygen is replaced by a sulfur atom. Name the type of reaction that occurs in each step and suggest a reason why the sequence is called b-oxidation.