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Structure and Properties of Amino Acids

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

80 daltons
150 daltons
110 daltons
118 daltons

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Structure and Properties of Amino Acids
Which amino acid when exposed to ninhydrin produces a brown color?

Alanine
Valine
Proline
Asparagine

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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 __________ .

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

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Structure and Properties of Amino Acids
Which amino acids would most likely reside in the membrane-anchoring domain of a membrane embedded protein?

Leucine, threonine, and lysine
Phenylalanine, valine, and aspartate
Lysine, arginine and histidine
Isoleucine, valine and phenylalanine

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Structure and Properties of Amino Acids
Amino acids required in the human diet and not synthesized by the body are called

accessory
specialized
trace
essential

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

Histidine
Tryptophan
Phenylalanine
Tyrosine

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MORE MCQ ON Structure and Properties of Amino Acids

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