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DNA Structure and Replication

DNA Structure and Replication
The nucleosome consists of histone

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

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DNA Structure and Replication
The most common liquid volumes in molecular biology are measured in

nl
μl
ml
1

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DNA Structure and Replication
DNA gyrase in E. coli

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

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DNA Structure and Replication
Number of times the two DNA strands are interwined in circular DNA and is known as

helix frequency
linking number
twisting number
none of these

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

All of these
pyrimidines
purines
protamines

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DNA Structure and Replication
For the DNA replication in eukaryotes, the cell cycle consists of

G1, G2 and M phases
G2 and M phases
G1,S, G2 and M phases
S, G2 and M phases

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