<prompt> The enzymes engaged in the transfer of electrons are known asOxidoreductasesTransferasesLyasesLigases  <response>: Enzymes are grouped into the following six classes: 1.Oxidoreductases: Enzymes that catalyze oxidations and reductions. 2.Transferases: Enzymes that catalyze the transfer of moieties such as glycosyl, methyl, or phosphoryl groups. 3.Hydrolases: Enzymes that catalyze hydrolytic cleavage of CC, CO, CN, and other covalent bonds. 4.Lyases: Enzymes that catalyze the cleavage of CC, CO, CN, and other covalent bonds by atom elimination, generating double bonds.5.Isomerases: Enzymes that catalyze geometric or structural changes within a molecule. 6.Ligases: Enzymes that catalyze the joining together ligationOxidoreductases are fuher classified into four groups: oxidases, dehydrogenases, hydroperoxidases, and oxygenasesReference: Explanation: Harpers Biochemistry; 30th edition; Chapter 7; Enzymes: Mechanism of action 