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DNA Structure and Replication

DNA Structure and Replication
DNA replication takes place in which direction?

5 'to 3'
Vary from organism to organism
Randomly
3' to 5'

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DNA Structure and Replication
The replication of a linear DNA molecule in a eukaryotic chromosome creates a problem which is reported to be sorted out by

using RNA as a template
shortening of the double stranded replicated portion
None of these
using enzyme called telomerase

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DNA Structure and Replication
The size of a linear DNA fragment in a gel can be estimated by

fluorescence in UV light
the sedimentation coefficient
the time it takes the gel to run
comparison with a molecular weight standard such as Hind III digested phage lambda

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DNA Structure and Replication
Messelsen and Stahl model of replication was called

Cri du Chat
conservative replication
dispersive replication
semi-conservative replication

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

Replicase
Polymerase
Synthesase
Helicase

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DNA Structure and Replication
DNA helicase is used to

unwind the double helix
None of these
break a phosphodiester bond in DNA strand
interact the double helix closely

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