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DNA Structure and Replication

DNA Structure and Replication
DNA with a G-C content of 50% will melt at approximately

100 °C
90 °C
70 °C
60°C

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DNA Structure and Replication
What bands will be observed in a cesium chloride gradient after two rounds of replication?

One medium and one heavy band
One light, one medium and one heavy band
One light and one medium band
One medium band

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

DNA helicases
single stranded binding proteins
DNA topoisomerase
ligase

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DNA Structure and Replication
The packing ratio of nucleosomes is about

7
6
9
8

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DNA Structure and Replication
DNA replication in eukaryotes occurs only in

S phase
G2 phase
M phase
G1 phase

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

Three
Two
A smear
One

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