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DNA Structure and Replication

DNA Structure and Replication
30 nm wide helix with five or six nucleosomes per helix is known as

none of these
halonoid
solenoid
kinoplast

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DNA Structure and Replication
What is the main damaging effect of UV radiation on DNA?

Dehydration
Formation of thymine dimers
Depurination
Single strand break

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DNA Structure and Replication
Deoxyribonucleoside triphosphates, being need in the chain termination methods are

all of these
dATP
dGTP and dCTP
dTTP

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

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DNA Structure and Replication
How does ethidium bromide interact with DNA?

It binds to adenine
It does not interact
It intercalates between bases
It binds to phosphate

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DNA Structure and Replication
In an agarose gel, DNA is moving from

cathode to anode
anode to cathode
left to right
A to B

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