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DNA Structure and Replication

DNA Structure and Replication
Number of times the two DNA strands are interwined in circular DNA and is known as

twisting number
none of these
linking number
helix frequency

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DNA Structure and Replication
What is the range of melting point temperatures (Tm) for most DNA molecules?

60 to 80°C
70 to 90°C
80 to l00°C
50 to 60°C

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DNA Structure and Replication
When DNA polymerase is in contact with guanine in the parental strand, what does it add to the growing daughter strand?

Uracil
Guanine
Phosphate
Cytosine

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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
Which of the following enzyme adds complementary bases during replication?

Polymerase
Replicase
Synthesase
Helicase

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DNA Structure and Replication
The most common liquid volumes in molecular biology are measured in

nl
ml
1
μl

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