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Protein and Nucleic Acid Interactions

Protein and Nucleic Acid Interactions
The enzyme that joins DNA cuts is called

DNA phosphorylase
ligase
reverse transcriptase
joinase

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Protein and Nucleic Acid Interactions
Reverse transcripase from HIV does not

uses RNA as a template
requires a primer
has a 5' to 3' polymerase activity
has a 3'- 5' exonuclease activity

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Protein and Nucleic Acid Interactions
The type II restriction endonucleases, bind to DNA sites

using H-bonds for specificity
using non-sequence-dependent backbone interactions
All of these
that are usually palindromic

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Protein and Nucleic Acid Interactions
Cleavage of DNA by EcoRI endonuclease results in the formation of

one 3'-OH end and two 5'-phosphate end
two 3'-OH ends and two 5'-phosphate ends
two 3'-phosphate ends and two 3'-OH ends
one 3'-OH end and one 5'-phosphate end

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Protein and Nucleic Acid Interactions
Which of the following amino acids can interact with the DNA or RNA nucleotide bases via hydrogen bonding?

Cys and Met
Asn and Gln
Lys and Leu
Ile and Val

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Protein and Nucleic Acid Interactions
Which of the following amino acids interact with the DNA or RNA backbone (i.e. phosphate)?

Cys and Met
Ile and Val
Leu and Ala
Lys and Arg

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