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DNA Structure and Replication

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

Ori
an initiation codon
Pro
a promoter

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DNA Structure and Replication
The 5' and 3' numbers are related to the

the base pair rule
length of the DNA strand
carbon number in sugar
the number of phosphates

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

ligase
DNA helicases
DNA topoisomerase
single stranded binding proteins

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DNA Structure and Replication
In a cesium chloride gradient, DNA labeled with 15N and centrifuged will form a band

above DNA containing 14N
with 14N-containing DNA
below DNA containing 14N
all of these

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DNA Structure and Replication
Number of times the two DNA strands are interwined in circular DNA and is known as

linking number
twisting number
none of these
helix frequency

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DNA Structure and Replication
If one cell has AT contents 40%, what will be the percentage of Guanine residue?

30%
15%
Guanine residue can not be calculated
60%

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