Advertisements
Advertisements
प्रश्न
Amino acids show amphoteric behaviour. Why?
उत्तर १
In aqueous solutions, the carboxyl groups of amino acids lose a proton. Amino groups of amino acids, on the other hand, accept a proton, giving rise to a dipolar ion known as zwitter ion.
This is neutral, but contains both positive and negative charges. In the zwitter ionic form, amino acids show amphoteric behaviour as they react with both acids and bases.
उत्तर २
In aqueous solution, the carboxyl group of an amino acid can lose a proton and the amino group can accept a proton to give a dipolar ion known as zwitter ion.
Therefore, in zwitter ionic form, the amino acid can act both as an acid and as a base.
Thus, amino acids show amphoteric behaviour.
APPEARS IN
संबंधित प्रश्न
Define the following terms: Essential amino acids
What are amino acids?
Among the following a chiral amino acid is:
Which of the following acids is a vitamin?
Lysine, \[\begin{array}{cc}
\ce{H2N - (CH2)4 - CH - COOH}\\
\phantom{.....}|\\
\phantom{........}\ce{NH2}
\end{array}\] is:
(i) α-Amino acid
(ii) Basic amino acid
(iii) Amino acid synthesised in body
(iv) β-Amino acid
Describe the term D- and L- configuration used for amino acids with examples.
Amino acid are least soluble in water.
Proteins are condensation polymers of:
Why tryptophan is an essential amino acid?
Define Zwitter ion
