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DNA Structure and Replication

DNA Structure and Replication
Which of the following would not contain DNA?

Yeast
Bacteria
Mold
Glass crystals

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DNA Structure and Replication
During conventional transformation experiments E. coli cells and plasmid DNA interacts in an environment of

low temperature and Ca++
low temperature and Mg++
high temperature and Ca++
high temperature and Mg++

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DNA Structure and Replication
Which polymerase is active in DNA repairing

Polymerase II
none of these
Polymerase I
Polymerase III

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DNA Structure and Replication
DNA with a G-C content of 50% will melt at approximately

100 °C
70 °C
90 °C
60°C

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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
Enzymes, responsible for unraveling short segments of DNA is

primase
helicase
DNA polymerase
DNA ligase

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