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Structure and Properties of Amino Acids

Structure and Properties of Amino Acids
Which of the following amino acids can form hydrogen bonds with their side (R) groups?

Aspartic acid
All of these
Asparagine
Glutamine

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

free c-termini
aromatic ring
peptide bonds
arginine residues

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Structure and Properties of Amino Acids
Which of the following amino acid contain an imidazolium moiety?

Cysteine
Histidine
Valine
Alanine

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Structure and Properties of Amino Acids
Which of the following pairs of amino acids would carry a negative charge on their side chain at pH 8.0?

Leucine & Glycine
Aspartate & Glutamate
Histidine & Lysine
Asparagine & Glutamine

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Structure and Properties of Amino Acids
In a polypeptide average mass of an amino acid residue is

150 daltons
80 daltons
118 daltons
110 daltons

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Structure and Properties of Amino Acids
What is the heaviest of the twenty amino acids?

Tryptophan
Tyrosine
Histidine
Phenylalanine

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