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DNA Structure and Replication

DNA Structure and Replication
In sperm heads, DNA is particularly highly condensed and the histones are replaced with small basic protein called

protamines
pyrimidines
All of these
purines

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DNA Structure and Replication
Which enzyme catalyzes the elongation of DNA molecules?

DNA ligase
Primase
DNA polymerase
Helicase

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

restriction endonuclease
reverse transcriptase
helicase
transposase

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DNA Structure and Replication
DNA replication in eukaryotes occurs only in

S phase
G2 phase
M phase
G1 phase

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DNA Structure and Replication
Replication in E. coli is initiated by the generation of short RNA primers using

RNA polymerase
primase
both (a) and (b)
reverse transcriptase

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DNA Structure and Replication
DNA replication takes place in which direction?

5 'to 3'
3' to 5'
Randomly
Vary from organism to organism

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