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PROTEIN AND NUCLEIC ACID INTERACTIONS

Protein and Nucleic Acid Interactions
Reverse transcripase from HIV does not

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

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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?

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

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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.

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

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

that are usually palindromic
All of these
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

DNA phosphorylase
ligase
joinase
reverse transcriptase

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