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प्रश्न
Give scientific reasons:
α-Amino acids have high melting points compared to the corresponding amines or carboxylic acids of comparable molecular mass.
Why α-amino acids have high melting points compared to the corresponding amines or carboxylic acids of comparable molecular mass?
उत्तर
- This is due to the peculiar structure called zwitter ion structure of α -amino acids.
- α-Amino acid molecule contains both acidic carboxyl (–COOH) group as well as basic amino (–NH2) group.
- Proton transfer from the acidic group to the basic group of amino acid forms a salt, which is a dipolar ion called zwitter ion.
Thus, α-amino acids have high melting points compared to the corresponding amines or carboxylic acids of comparable molecular mass.
संबंधित प्रश्न
Draw a neat diagram for the following:
Zwitter ion
Draw a neat diagram for the following:
Enzyme catalysis
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i. Protein portion of the enzyme is called the ____________.
ii. Non-protein constituent binding to the enzyme is called as the ____________.
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β-pleated sheets of polypeptide chains are present in ______.
The molecular weight of hemoglobin is ______ Daltons.
An iron-containing red protein is ______
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In aqueous solution of amino acids mostly exists in, ____________.
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Write a short note on a peptide bond.
Write a short note on peptide bond.
