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DNA Structure and Replication

DNA Structure and Replication
The site on a bacterial chromosome that marks the initiation point for chromosome replication is called

Ori
a promoter
Pro
an initiation codon

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DNA Structure and Replication
Overwinding or overtightening of DNA during replication is caused and removed by

Single stranded protein, DNAa
DNAa, gyrase
DNAb, gyrase
DNAb, DNA polymerase

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DNA Structure and Replication
The nicks or gaps between Okazaki fragments are eventually sealed by

DNA ligase
polymerase
gyrase
RNA ligase

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DNA Structure and Replication
The role of primase is to

dismantle RNA primer
cleave and unwinds short sections of DNA ahead of the replication fork
synthesize an RNA primer to begin the elongation process
proofread base pairing

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

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

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DNA Structure and Replication
Who's X-ray work aided Watson and Crick in their discovery of the double helix?

Leaderberg
W.H. Bragg
R. Franklin
L. Pauling

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