Exercise: Dna Structure And Replication

Questions for: Dna Structure And Replication

A cesium chloride will separate DNA molecules by
A:
absorption
B:
resorption
C:
density
D:
adhesion
Answer: C
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The overall conclusion of the Hershey-Chase experiment was that
A:
DNA was responsible for heredity
B:
proteins and DNA were responsible for heredity
C:
the ratio of Adenine to thymine was always the same
D:
phage DNA was similar to bacterial DNA
Answer: A
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What is the range of melting point temperatures (Tm) for most DNA molecules?
A:
50 to 60°C
B:
60 to 80°C
C:
70 to 90°C
D:
80 to l00°C
Answer: D
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In the study of one experiment it was found that the value of Tm for DNA is = 40° C. If the cell has 20% GC at the above Tm, then what will be value of 'Tm' if the GC% increases to 60%?
A:
Remains same
B:
Increases
C:
Decreases
D:
Can not be compared
Answer: B
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What is the approximate size (in kb) of the E. coli genome?
A:
3000 kilobase
B:
4500 kilobase
C:
5500 kilobase
D:
6500 kilobase
Answer: B
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