Biochemistry Chapter 4,5,& 6 Test Bank Questions EXAM 2

Biochemistry Chapter 4,5,& 6 Test Bank Questions EXAM 2
The net charge of the zwitterion form of Gly is ___ - ✔✔-Zero
When a peptide bond is formed, an ___ reacts with a carboxylate
group - ✔✔-Amino Group
At a pH above the pKa, the phenol group of tyrosine is -
✔✔-Deprotonated
In the tripeptide Lys-Pro-Ile, there are ___ charged groups at pH 7 -
✔✔-Three
at a pH below the pKa, the ε-amino group of lysine is - ✔✔-Protonated
at a pH below the pKa, the β-carboxylate group of Asp is ___ -
✔✔-uncharged; Protonated
In the peptide Trp-Ser-Val, valine is at the - ✔✔-C-terminus
In the tripeptide Trp-Val-Phe, the N-terminal residue is ___ -
✔✔-tryptophan
In the tripeptide Lys-Pro-Ile, the C-terminal residue is -
✔✔-Isoleucine
Biological systems usually produce a single enantiomer, whereas
chemical synthesis produces a ___ - ✔✔-racemic mixture

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