Biology 251 - Genetics » Spring 2021 » Topic 8.3 Quiz
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Question #1
In E. coli, both DNA polymerase I and DNA polymerase III have 5' to 3' exonucealse activity to remove RNA primers and replace with DNA nucleotides.
A.
True
B.
False
Question #2
In E. coli, the very last step of replication of the entire genome is performed by:
A.
telomerase.
B.
DNA ligase.
C.
DNA polymerase III.
D.
helicase.
E.
DNA polymerase I.
Question #3
In bacteria, termination occurs at specific termination (Ter) sites, but eukaryotes don't use this same mechanism.
A.
False
B.
True
Question #4
The action of telomerase add DNA repeats to:
A.
extend DNA at the 3' end.
B.
extend DNA at the 5' end.
C.
extend DNA with double-stranded repeats on the end of a chromosome.
Question #5
Extension of a linear chromosome by telomerase requires additional help from the replication machinery to create an antiparallel Okazaki fragment, so there will always be a 3' overhang of single-stranded DNA.
A.
True
B.
False
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