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PROTEIN AND NUCLEIC ACID INTERACTIONS

Protein and Nucleic Acid Interactions
Reverse transcripase from HIV does not

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

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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?

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

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Protein and Nucleic Acid Interactions
Different DNA polymerases play distinct roles in DNA replication and repair in both prokaryotic and eukaryotic cells. All known DNA polymerases synthesize DNA only in the __________ by the addition of dNTPs to a performed primer strand of DNA.

negative direction
3' to 5' direction
5' to 3' direction
positive direction

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

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

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

reverse transcriptase
DNA phosphorylase
joinase
ligase

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