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Chapter 11
Multiple-choice Quiz
Multiple-choice Quiz
This activity contains 8 questions.
Why is an RNA primer considered essential during DNA synthesis by DNA polymerase III?
The enzyme requires a free 3'-PO
4
group.
The enzyme requires a free 5'-PO
4
group.
The enzyme requires a free 5'-OH group.
The enzyme requires a free 3'-OH group.
There is no particular reason, that is simply the observation.
Which molecule serves to destabilize the DNA helix in order to open it up, creating a replication fork?
DNA helicase
DNA ligase
DNA polymerase
SSBPs
DNA gyrase
In vivo
synthesis of DNA is __________.
3' to 5'
5' to 3'
both 3' to 5' and 5' to 3'
neither 3' to 5' nor 5' to 3'
The discovery of Okazaki fragments suggested that DNA synthesis is __________.
discontinuous
continuous
3' to 5'
semiconservative
All of the above are correct.
In the Meselson-Stahl experiment, which mode of replication can be eliminated based on data derived after one generation of replication?
dispersive
semiconservative
conservative
all three modes
none of these three modes
Assume that in the following cross, d+ x e+, the only gametes formed consist of de alleles. This may be due to a phenomenon called __________.
gene conversion
reciprocal recombination
nonreciprocal recombination
genetic exchange
Telomeres have all of the following properties or characteristics except __________.
the telomerase enzyme
forming "hairpin" loops
a link to the aging process in eukaryotic cells
being found in both eukaryotic and prokaryotic chromosomes
All of the following are differences between eukaryotic and prokaryotic DNA replication except __________.
the type and number of polymerases involved in DNA synthesis
multiple vs. single replication origins
the rate of DNA synthesis
the ability to form a replication fork
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