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DNA Structure and Replication

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

DNA ligase
primase
DNA polymerase
helicase

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DNA Structure and Replication
Okazaki fragments occur on the __________ and are bonded together by __________

mRNA, anticodons
Lagging strand, ligase
tRNA, polymerase
Leading strand, polymerase

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

Arabidopsis thaliana
Xenopus laevis
Saccharomyces cerevisiae
Strongylocentrotus purpuratus

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DNA Structure and Replication
The nucleosome consists of histone

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

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DNA Structure and Replication
Which of the following enzyme adds complementary bases during replication?

Replicase
Polymerase
Helicase
Synthesase

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DNA Structure and Replication
The nicks or gaps between Okazaki fragments are eventually sealed by

RNA ligase
polymerase
gyrase
DNA ligase

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