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Telomerase Function

View the animation below, then complete the quiz to test your knowledge of the concept.

1DNA polymerases cannot replicate
A)the 5’ end of circular chromosomes.
B)the 3’ end of circular chromosomes.
C)the 5’ end of linear chromosomes.
D)the 3’ end of linear chromosomes.
E)both the 5’ and 3’ ends of linear chromosomes.

2Telomerase is unique because it contains
A)a DNA molecule.
B)an RNA molecule.
C)different RNA molecules.
D)different DNA molecules.
E)both DNA and RNA molecules.

3Which of the following best describes the function of telomerase at the telomere?
A)It makes special primers that do not need to be removed.
B)It synthesizes new DNA without the use of a template.
C)It adds new DNA to both strands of the telomere overhang.
D)It adds new DNA to the shorter strand of the telomere overhang.
E)It adds new DNA to the longer strand of the telomere overhang.

4Telomeres consist of direct repeat sequences.

5In the absence of telomerase activity, chromosomes are shortened slightly after every round of replication.

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