The Enzyme That Some Organisms Use to Replicate DNA at the 5

Question

The enzyme that some organisms use to replicate DNA at the 5' ends of chromosomes is called
A)DNA polymerase.
B)telomerase.
C)DNA ligase.
D)replicase.

Accepted Answer

Telomerase is the enzyme responsible for adding DNA sequence repeats ("TTAGGG" in all vertebrates) to the 3' end of DNA strands in the telomere regions, which are found at the ends of eukaryotic chromosomes. This action compensates for the shortening that happens during DNA replication at the 5' ends of chromosomes.