Problem: The enzyme, telomerase, extends linear chromosomes by adding nucleotides. Identify the true statements regarding telomerase. Choose one or all that apply. The enzyme, telomerase, extends linear chromosomes by adding nucleotides. Identify the true statements regarding telomerase. Choose one or all that apply. In humans, telomerase adds the six-nucleotide sequence 5'-ATACTC-3'. Telomerase contains an RNA component that serves as a template for a DNA sequence. Telomerase extends a DNA strand by adding a repeating sequence of six nucleotides to the 5' end. Telomerase has reverse transcriptase activity. After the DNA strand is lengthened, telomerase serves as a template for the synthesis of the complementary DNA strand.