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प्रश्न
Amino acids behave like salts rather than simple amines or carboxylic acids. Explain.
उत्तर
In aqueous solution, the –COOH group of an amino acid loses a proton and –NH2 group accepts a proton to form zwitter ion (salt).
\[\begin{array}{cc}
\phantom{........}\ce{O}\phantom{........................}\ce{O}\phantom{.}\\
\phantom{........}||\phantom{........................}||\phantom{.}\\
\ce{H2N - CH - C - OH ⇌ H3\overset{+}{N} - CH - C - O-}\\
\phantom{........}|\phantom{.........................}|\phantom{.............}\\
\phantom{}\ce{\underset{Amino acid}{R}}\phantom{..............}\ce{\underset{Zwitter ion (inner salt)}{R}}\phantom{}
\end{array}\]
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संबंधित प्रश्न
Define the following terms: Essential amino acids
What are amino acids?
Differentiable between the following:
Essential amino acids Non-essential amino acids
Which amino acids are chiral?
Match the following:
| I | II |
| (i) Amino acids | (A) protein |
| (ii) Thymine | (B) Nucleic acid |
| (iii) Insulin | (C) DNA |
| (iv) phosphodiester linkage | (D) Zwitter ion |
Which of the following is the best matched options?
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
Amino acids can be classified as α–, β–, γ–, δ– and so on depending upon the relative position of amino group with respect to carboxyl group. Which type of amino acids form polypetide chain in proteins?
Describe the term D- and L- configuration used for amino acids with examples.
The amino acid are the end product of the digestion of:-
Which of the following is a basic amino acid?
