BIOLOGY
AMINO ACIDS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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It exhibits optical isomerism.
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It exists in the anionic form in acidic solution.
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It forms zwitterions in aqueous solution
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It is soluble in non-polar solvents.
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Detailed explanation-1: -Amino acids are the most common example of zwitterions. They are made up of an ammonium or amino group which contains a positive charge as well as a carboxyl group which contains a negative charge.
Detailed explanation-2: -Zwitterions in simple amino acid solutions An amino acid has both a basic amine group and an acidic carboxylic acid group. There is an internal transfer of a hydrogen ion from the-COOH group to the-NH2 group to leave an ion with both a negative charge and a positive charge. This is called a zwitterion.
Detailed explanation-3: -The correct answer is OPTION B.
Detailed explanation-4: -If acid is added to a solution containing the zwitterion, the carboxylate group captures a hydrogen (H+) ion, and the amino acid becomes positively charged. If base is added, ion removal of the H+ ion from the amino group of the zwitterion produces a negatively charged amino acid.