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DNA Structure and Replication

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

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

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DNA Structure and Replication
The packing ratio of nucleosomes is about

7
9
6
8

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

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DNA Structure and Replication
DNAs when charged, migrate in a gel towards the

will not migrate
none of these
negative pole
positive pole

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DNA Structure and Replication
The most common liquid volumes in molecular biology are measured in

ml
μl
nl
1

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DNA Structure and Replication
DNA gyrase in E. coli

can be inhibited with antibiotics
is required only at the oriC site
adds positive supercoils to chromosomal DNA
performs the same function as helicase in eukaryotes

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