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How many of the following α- amino acids contain sulphur?

Lysine, Methionine, Glutamic acid, Threonine, Arginine, Cysteine, Tyrosine, Isoleucine.

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Important Questions on Biomolecules

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Chemistry>Organic Chemistry>Biomolecules>Proteins and Amino Acids
Consider the following sequence for aspartic acid:


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The pH (Isoelectric point) of aspartic acid is:
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Assume a spherical mammalian cell has a diameter of 27 microns. If a polypeptide chain with alpha-helical conformation has to stretch across the cell, how many amino acids should it be comprised of?
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Observation of "Rhumann's purple" is a confirmatory test for the presence of:
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The correct sequence of amino acids present in the tripeptide given below is:
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The amino acid which is basic in nature is
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Which among the following formulae represents the ω-amino caproic acid?
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The number of peptide bonds in the compound

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Chemistry>Organic Chemistry>Biomolecules>Proteins and Amino Acids
Among the following compounds most basic amino acid is:
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The correct structure of histidine in a strongly acidic solution pH=2 is
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Which of the following is not an essential amino acid?
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Which of the following tests cannot be used for identifying amino acids?
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Which of the following is a basic amino acid?
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Chemistry>Organic Chemistry>Biomolecules>Proteins and Amino Acids
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Chemistry>Organic Chemistry>Biomolecules>Proteins and Amino Acids
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Which of the following statements is not correct?
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Chemistry>Organic Chemistry>Biomolecules>Proteins and Amino Acids
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