This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: TCA Cycle, Subject name: Biochemistry
Fumarase is an example of - 
Select and explain. 
A. Lyase, B. Hydrolase, C. Ligase, D. None
A: Lyase
Answer: A: Lyase 
Explanation: Fumarase is a Lyase - Enzyme Commission Number- 4. This enzyme conves Fumarate to Malate in TCA cycle. ADDITIONAL READING: EC Number of Hydrolase is 3. Examples of hydrolases are all Digestive Enzymes, Phosphatase EC Number of Ligase is 6. Examples of ligases are Carboxylase Synthetases.