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Structure and Properties of Amino Acids

Structure and Properties of Amino Acids
When the amino acid alanine (R-group is CH3) is added to a solution with a pH of 7.3, alanine becomes

a zwitterions
a cation
an isotope
nonpolar

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

polymer
enantiomers
epimers
anomers

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Structure and Properties of Amino Acids
What is the product of the catabolic breakdown of Arginine?

Alpha-ketoglutarate
Oxaloacetate
Fumarate
Succinate

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

Tyrosine
Histidine
Phenylalanine
Tryptophan

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

118 daltons
80 daltons
110 daltons
150 daltons

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Structure and Properties of Amino Acids
Which of the following amino acid is known as half-cystine residue?

Valine
Isoleucine
Histidine
Cysteine

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