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Structure and Properties of Amino Acids

Structure and Properties of Amino Acids
Which of the following is a nonstandard amino acid?

Cysteine
Histidine
Hydroxyproline
Isoleucine

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Structure and Properties of Amino Acids
Coomassie Blue stains the proteins by reacting with

free c-termini
aromatic ring
arginine residues
peptide bonds

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Structure and Properties of Amino Acids
Molecules that bear charged groups of opposite polarity are known as

ambions
amphions
zwitterions
ion conversion

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Structure and Properties of Amino Acids
D-Alanine and L-Alanine are technically known as

polymer
epimers
enantiomers
anomers

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Structure and Properties of Amino Acids
The α-amino acids have a carboxyl group with a pK around __________ , and an amino group with a pK near __________ .

6.5, and 8.0
2.2, and 9.4
1.1, and 12.1
3.3, and 10.5

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Structure and Properties of Amino Acids
Protein fluorescence arises primarily from which residue?

Tyrosine
Arginine
Tryptophan
Phenylalanine

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