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DNA Structure and Replication

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

helicase
none of these
DNA polymerase
strandase

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DNA Structure and Replication
The 5' and 3' numbers are related to the

carbon number in sugar
length of the DNA strand
the number of phosphates
the base pair rule

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

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

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DNA Structure and Replication
The nucleosome consists of histone

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

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

μl
1
ml
nl

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

transposase
reverse transcriptase
helicase
restriction endonuclease

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