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DNA Structure and Replication

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

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

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DNA Structure and Replication
After one replication in 15N, how many bands should be observed in a cesium chloride gradient?

Two
A smear
Three
One

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DNA Structure and Replication
The chromosomal DNA complexes with

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

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DNA Structure and Replication
DNA gyrase in E. coli

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

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DNA Structure and Replication
Which DNA polymerase removes RNA primers in DNA synthesis?

none of these
Polymerase III
Polymerase II
Polymerase I

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DNA Structure and Replication
Okazaki fragments occur on the __________ and are bonded together by __________

Lagging strand, ligase
tRNA, polymerase
Leading strand, polymerase
mRNA, anticodons

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