Enzyme which prevents aging/senescence is:: (A) DNA Polymerase, (B) Catalase, (C) Telomerase, (D) Peroxidase
Answer is C. 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