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DNA Structure and Replication

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

Telomerase
DNA ligase
DNA polymerase
Primase

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DNA Structure and Replication
The enzyme responsible for breaking the hydrogen bonds, and thus separating the DNA strands during DNA synthesis is

DNA polymerase
strandase
helicase
none of these

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DNA Structure and Replication
DNA replication in eukaryotes occurs only in

S phase
G2 phase
G1 phase
M phase

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DNA Structure and Replication
The nucleosome consists of histone

tetramer and 146 bp of DNA
octamer and 146 bp of DNA
hexamer and 146 bp of DNA
None of these

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DNA Structure and Replication
Overwinding or overtightening of DNA during replication is caused and removed by

DNAb, gyrase
Single stranded protein, DNAa
DNAa, gyrase
DNAb, DNA polymerase

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

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

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