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DNA Structure and Replication

DNA Structure and Replication
Reverse transcriptase produces

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

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

primase
DNA polymerase
helicase
DNA ligase

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DNA Structure and Replication
DNA gyrase in E. coli

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

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DNA Structure and Replication
In DNA replication, one new strand is synthesized complementary to an old (parent) strand and is referred as

antiparallel
mutational
discontinuous
semiconservative

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DNA Structure and Replication
An enzyme that recognizes foreign DNA, and results in a cut in that DNA is called

transposase
helicase
reverse transcriptase
restriction endonuclease

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DNA Structure and Replication
The overall conclusion of the Hershey-Chase experiment was that

DNA was responsible for heredity
phage DNA was similar to bacterial DNA
proteins and DNA were responsible for heredity
the ratio of Adenine to thymine was always the same

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