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DNA Structure and Replication

DNA Structure and Replication
Reverse transcriptase produces

DNA from peptides
DNA from RNA
RNA from DNA
RNA from RNA

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DNA Structure and Replication
Enzymes, responsible for unraveling short segments of DNA is

primase
DNA ligase
helicase
DNA polymerase

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DNA Structure and Replication
DNA gyrase in E. coli

adds positive supercoils to chromosomal DNA
is required only at the oriC site
performs the same function as helicase in eukaryotes
can be inhibited with antibiotics

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DNA Structure and Replication
The role of primase is to

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

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DNA Structure and Replication
Which of these drugs bind to DNA and cuts it, producing hydroxyl radicals?

Tunicamycin
Bleomycin
Erythromycin
All of these

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DNA Structure and Replication
Which of the following are short nucleotides strands made by DNA polymerase working in the opposite direction of the replication fork?

Okazaki fragments
Leading strands
Lagging strand
Primers

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