This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Enzyme uses, Subject name: Biochemistry
[{'content': 'Enzyme which cleaves C-C bond : \nSelect and explain. \nA. Lyase, B. Ligase, C. Transferase, D. Isomerase', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Lyase enzyme breaks C-C bond. E.g. Aldolase, Synthase . In this case ATP is not used. There are seven groups of enzymes (IUBMB classification): Oxidoreductases: catalyze oxidations and reductions Transferases: catalyze the transfer of groups such as glycosyl or methyl group Hydrolases: catalyze hydrolytic cleavage of C-C, C-O, C-N, and other covalent bonds Lyases: catalyze the cleavage of C-C, C-O, C-N, and other covalent bonds by atom elimination, thereby generating double bonds Isomerases: catalyze structural changes within a molecule Ligases: catalyze the joining together of two molecules in reactions Translocases: catalyze the movement of molecules or ions across membranes', 'role': 'assistant'}]