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DNA Structure and Replication

DNA Structure and Replication
Which of the following would not contain DNA?

Bacteria
Yeast
Glass crystals
Mold

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

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

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DNA Structure and Replication
What is the only common methylation in the DNA of eukaryotes?

Cytosine in CpG dinucleotides
None of these
Adenosine in GpA dinucleotides
Guanosine in ApGpA trinucleotides

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DNA Structure and Replication
In DNA double helix, the two DNA chains are held together by

None of these
hydrogen bonds between the pair of bases
covalent bonds between the pair of bases
ionic bonds between the pair of bases

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DNA Structure and Replication
Proteins which help to open the double helix for DNA synthesis are

DNA helicases
single stranded binding proteins
ligase
DNA topoisomerase

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DNA Structure and Replication
E.coli DNA polymerases II and III lack

partially 5' → 3' endonuclease activity
5' → 3' exonuclease activity
5' → 3' endonuclease activity
partially 5' → 3' exonuclease activity

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