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DNA Structure and Replication

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

primase
DNA polymerase
helicase
DNA ligase

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DNA Structure and Replication
Which of the following in DNA replication and transcription are common?

None of these
incorporation of deoxynucleotides
synthesis in the 5'-3' direction
utilization the same enzyme

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DNA Structure and Replication
Each replication bubbles consists of

2 replication forks
4 replication forks
3 replication forks
1 replication forks

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DNA Structure and Replication
The chromosomal DNA complexes with

five types of histone as H1, H2A, H2B, H3 and H4
four types of histone as H1, H2A, H3 and H4
three types of histone as H1, H2A and H4
two types of histone as H1 and H4

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DNA Structure and Replication
What does ligase do during replication of DNA?

Synthesizes the lagging strand
Joins nicks in DNA strands
Digests mRNA when it is no longer needed
Makes copies of mRNA from DNA

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DNA Structure and Replication
DNA replication results in

one new molecule of RNA
two completely new DNA molecules
one new DNA molecules 1 old molecule
two DNA molecules such that each one contains a strand of the original

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