This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Replication, Subject name: Biochemistry
[{'content': 'Enzyme which prevents aging/senescence is: \nSelect and explain. \nA. DNA Polymerase, B. Catalase, C. Telomerase, D. Peroxidase', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Teloemrase prevents ageing. Telomerase RNA dependent DNA polymerase/ Reverse transcriptase Absent in somatic cells Not a ribozyme It is a ribonucleoprotein (RNA + protein)(act as enzyme). Increases longevity of cells Prevents telomere shoening (prevents ageing or senescence) Activity of enzyme decreased in ageing increased in cancer Premature ageing (Progeria) occurs if telomerase decreases', 'role': 'assistant'}]