Question: Which answer best describes the role of telomerase in replicating the ends of linear chromosomes?

Which answer best describes the role of telomerase in replicating the ends of linear chromosomes? It catalyzes the lengthening of telomeres, compensating for the shortening that could occur during replication without telomerase activity. Telomere shortening puts a limit on the number of times a cell can divide.

What is the role of telomerase in replicating the ends of linear chromosomes?

Telomerase adds complementary RNA bases to the 3′ end of the DNA strand. Once the 3′ end of the lagging strand template is sufficiently elongated, DNA polymerase adds the complementary nucleotides to the ends of the chromosomes; thus, the ends of the chromosomes are replicated.

How does telomerase replicate the ends of chromosomes?

Telomerase adds complementary RNA bases to the 3′ end of the DNA strand. Once the 3′ end of the lagging strand template is sufficiently elongated, DNA polymerase adds the complementary nucleotides to the ends of the chromosomes; thus, the ends of the chromosomes are replicated.

Which of the following best describes the function of telomerase at the telomere?

Which of the following best describes the function of telomerase at the telomere? It adds new DNA to the longer strand of the telomere overhang. Telomeres consist of direct repeat sequences. … In bacteria, DNA polymerase I removes RNA primers.

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Can telomerase reverse aging?

An enzyme called telomerase can slow, stop or perhaps even reverse the telomere shortening that happens as we age. The amount of telomerase in our bodies declines as we age.

How do telomeres solve the end replication problem?

Eukaryotes have solved the end-replication problem by locating highly repeated DNA sequence at the end, or telomeres, of each linear chromosome. … In prokaryotes, the end-replication problem is solved by having circular DNA molecules as chromosomes. Another cause of telomere shortening is oxidative stress.

Which best describes the function of DNA polymerase?

Most prominently, DNA polymerase synthesizes the new strands by adding nucleotides that complement each (template) strand. DNA replication occurs during the S-stage of interphase. DNA replication (DNA amplification) can also be performed in vitro (artificially, outside a cell).

Which of the following describes telomeres?

Telomeres are distinctive structures found at the ends of our chromosomes. They consist of the same short DNA sequence repeated over and over again. … They consist of the same sequence of bases ?repeated over and over. In humans the telomere sequence is TTAGGG.

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