Assertion: alpha-amino acids exist as dipolar ions or zwitter ion. Reason: alpha-amino acids are the building blocks of proteins.

Assertion: alpha-amino acids exist as dipolar ions or zwitter ion. Re

1.	Assertion: alpha-amino acids exist as dipolar ions or zwitter ion. Reason: alpha-amino acids are the building blocks of proteins.
Answer» If both assertion and reason are true and the reason is the correct explanation of the assertion. If both assertion and reason are true but reason is not the corret explanation of the assertion. If assertion is true but reason is false. If the assertion and the reason both are false. Solution :In acidic MEDIUM -COOH group acts as the base and accepts a proton. As a result, `alpha`-amino acids exist as cations in acidicmedium and migrate towards cathode under the influence of an electric field. In alkaline medium `overset(+)(N)H_(3)` group acts as the acid and thus loses a proton. as a result, `alpha`-amino acids exist as anion and migrate towards anode under the influence of an electric field. however at some intermediate value of PH , the concentration of CATIONIC FORM and anionic form will become equal and hence there is no net migration of `alpha`-amino acids under the influence of an electric field