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DNA Structure and Replication

DNA Structure and Replication
An RNA primer is synthesized by

primase
DNA helicases
ligase
DNA topoisomerase

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DNA Structure and Replication
30 nm wide helix with five or six nucleosomes per helix is known as

none of these
halonoid
solenoid
kinoplast

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DNA Structure and Replication
An important difference between eukaryotic and prokaryotic DNA replication is

more DNA polymerases are found in eukaryotes
multiple origins of replication in eukaryotes
RNA primers are not required in eukaryotes
eukaryotic DNA polymerases are faster

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DNA Structure and Replication
What does ligase do during replication of DNA?

Digests mRNA when it is no longer needed
Makes copies of mRNA from DNA
Joins nicks in DNA strands
Synthesizes the lagging strand

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DNA Structure and Replication
The accepted hypothesis for DNA replication is

evolutionary theory
conservative theory
semi-conservative theory
dispersive theory

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DNA Structure and Replication
The RNA primers used to initiate replication in E. coli

are joined together by DNA ligase
are removed by Pol I
result in Okazaki fragments on leading strand
are removed by helicase + ATP

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MORE MCQ ON DNA Structure and Replication

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