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DNA Structure and Replication

DNA Structure and Replication
Which DNA polymerase removes RNA primers in DNA synthesis?

Polymerase II
Polymerase I
none of these
Polymerase III

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DNA Structure and Replication
An enzyme that recognizes foreign DNA, and results in a cut in that DNA is called

helicase
restriction endonuclease
transposase
reverse transcriptase

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DNA Structure and Replication
DNA gyrase in E. coli

is required only at the oriC site
adds positive supercoils to chromosomal DNA
can be inhibited with antibiotics
performs the same function as helicase in eukaryotes

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DNA Structure and Replication
Which of these drugs bind to DNA and cuts it, producing hydroxyl radicals?

Tunicamycin
Erythromycin
All of these
Bleomycin

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DNA Structure and Replication
Each replication bubbles consists of

1 replication forks
4 replication forks
3 replication forks
2 replication forks

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

halonoid
kinoplast
none of these
solenoid

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