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DNA Structure and Replication

DNA Structure and Replication
Telomeres are usually rich in which nucleotide?

Guanine
Cytosine
Thymine
Adenine

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DNA Structure and Replication
The overall conclusion of the Hershey-Chase experiment was that

DNA was responsible for heredity
phage DNA was similar to bacterial DNA
proteins and DNA were responsible for heredity
the ratio of Adenine to thymine was always the same

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DNA Structure and Replication
DNA polymerases I also has

3'-5'exonuclease activity
5'-3' exonuclease activity
5'-3' endonuclease activity
both (a) and (b)

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

None of these
B
S
H

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DNA Structure and Replication
TM refers to the temperature at which

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

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DNA Structure and Replication
The enzyme responsible for breaking the hydrogen bonds, and thus separating the DNA strands during DNA synthesis is

DNA polymerase
strandase
helicase
none of these

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