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DNA Structure and Replication

DNA Structure and Replication
30 nm wide helix with five or six nucleosomes per helix is known as

none of these
halonoid
kinoplast
solenoid

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DNA Structure and Replication
Which of the following species lack a 'classical' histone H1?

Xenopus laevis
Saccharomyces cerevisiae
Arabidopsis thaliana
Strongylocentrotus purpuratus

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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

strandase
helicase
none of these
DNA polymerase

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

reverse transcriptase
restriction endonuclease
transposase
helicase

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DNA Structure and Replication
DNA polymerases I also has

5'-3' exonuclease activity
both (a) and (b)
3'-5'exonuclease activity
5'-3' endonuclease activity

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DNA Structure and Replication
Enzymes, responsible for unraveling short segments of DNA is

primase
helicase
DNA ligase
DNA polymerase

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