What enzyme replicates DNA at the ends of the chromosomes?

DNA polymerase
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 the absence of telomerase activity, chromosomes are shortened slightly after every round of replication.

What is meant by the description anti parallel regarding the two strands that make up the DNA double helix?

The sugar and phosphate make up the backbone, while the nitrogen bases are found in the center and hold the two strands together. Due to the base pairing, the DNA strands are complementary to each other, run in opposite directions, and are called antiparallel strands.

What does the enzyme telomerase do?

Telomerase, also called telomere terminal transferase, is an enzyme made of protein and RNA subunits that elongates chromosomes by adding TTAGGG sequences to the end of existing chromosomes.

What is the end replication problem why in the absence of telomerase do the ends of linear chromosomes get progressively shorter each time the DNA is replicated?

There are ends at the DNA in eukaryotes, unlike the prokaryotic DNA that become shorter after each replication cycle. This is known as the end replication problem. It occurs because the lagging strands of the DNA do not get synthesized for the end of the DNA after the removal of RNA primers.

What is the role of the enzyme telomerase?

Telomerase, also called telomere terminal transferase, is an enzyme made of protein and RNA subunits that elongates chromosomes by adding TTAGGG sequences to the end of existing chromosomes. If telomerase is activated in a cell, the cell will continue to grow and divide.

Which answer best describes the role of telomerase and 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.

Which of the following statements best describes the enzymatic activity of telomerase?

Which of the following are necessary for DNA replication in vitro? bidirectional and semiconservative. involves which enzyme? In eukaryotes, chromosomes are duplicated during which stage of the cell cycle?

Which of the following helps to hold the DNA strands apart while they are being replicated?

Binding Proteins
Proteins called Binding Proteins keep the two DNA strands apart preserving the Replication Fork. A protein called Primase makes a short segment of RNA called the RNA Primer on the DNA termed the Template DNA. A protein called DNA Polymerase adds DNA Nucleotides to the RNA Primer on the Template DNA.