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DNA Structure and Replication

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

reverse transcriptase
transposase
helicase
restriction endonuclease

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DNA Structure and Replication
Enzyme, responsible for proofreading base pairing is

Telomerase
DNA polymerase
DNA ligase
Primase

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

Erythromycin
Tunicamycin
Bleomycin
All of these

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DNA Structure and Replication
The overall conclusion of the Hershey-Chase experiment was that

DNA was responsible for heredity
phage DNA was similar to bacterial DNA
the ratio of Adenine to thymine was always the same
proteins and DNA were responsible for heredity

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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
kinoplast
solenoid

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DNA Structure and Replication
If one cell has AT contents 40%, what will be the percentage of Guanine residue?

Guanine residue can not be calculated
60%
30%
15%

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