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DNA Structure and Replication

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

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

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DNA Structure and Replication
What is the IUPAC code for an A, C, T ambiguity in a nucleic acid sequence?

B
None of these
S
H

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DNA Structure and Replication
Which will require a higher temperature to denature?

DNA with a high A-T content
RNA with a high A-T content
DNA with a high G-C content
RNA with a high G-C content

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

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DNA Structure and Replication
TM refers to the temperature at which

50% of a protein molecules are denatured
50% of a DNA molecule is denatured
All of these
membranes are 50% fluid

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DNA Structure and Replication
In sperm heads, DNA is particularly highly condensed and the histones are replaced with small basic protein called

purines
All of these
pyrimidines
protamines

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