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Idea of Hybridisation

In aqueous so...

Question

In aqueous solution, the carboxyl group can lose a proton and amino group can accept a proton, giving rise to a dipolar ion known as:

A

Peptide bond

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B

Zwitter ion

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C

L-amino acids

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D

D-amino acids

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Solution

The correct option is B
Zwitter ion

In aqueous solution, the carboxyl group can lose a proton and amino group can accept a proton, giving rise to a dipolar ion known as zwitter ion. This is neutral but contains both positive and negative charges.

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Similar questions

Select the correct statements regarding zwitterion.

(i) Zwitterions can be formed from compounds that contain both acid groups and basic groups in their molecules.
(ii) A zwitterion can act either as a proton donor or proton acceptor.
(iii) A monoamine monocarboxylic

α

-amino acid is a acid at high pH as both the groups (amino and carboxyl) lose a proton.
(iv) Amino acids in solution at neutral pH exist predominantly as dipolar ions, the amino group is protonated

(N H_{3}^{+})

and the carboxyl group is deprotonated

(- C O O^{-})

.

Q. Assertion :Sulphanilic acid exists as dipolar ion whereas

p -

aminobenzoic acid does not. Reason: Carboxyl group being more acidic than

- S O_{3} H

group can easily transfer a

H^{+}

to the amino group

Q. During chain elongation, peptide bond is formed between a carboxylic group of 1

^{s t}

amino acid and an amino group of 2

^{n d}

amino acid is catalyzed by

α

-amino acids exist as dipolar ions or zwitter ions.

Reason

α

-amino acids are the building blocks of proteins.

Q. A bond formed between carboxyl group of one amino acid and amino group of adjacent amino acid, is called

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Idea of Hybridisation

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