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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

DNA polymerase
helicase
strandase
none of these

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DNA Structure and Replication
The chromosomal DNA complexes with

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

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DNA Structure and Replication
The site on a bacterial chromosome that marks the initiation point for chromosome replication is called

Pro
a promoter
Ori
an initiation codon

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DNA Structure and Replication
Reverse transcriptase produces

DNA from peptides
DNA from RNA
RNA from RNA
RNA from DNA

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DNA Structure and Replication
Without telomerase, what would happen to the ends of chromosomes after each round of replication?

Chromosomes would get longer
None of these
Nothing would happen
Chromosomes would become progressively shorter

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

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

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