List of top Chemistry Questions on Amino Acids

Identify the correct statements. (Note: Based on options, the question asks to identify INCORRECT statements).
A. Arginine and Tryptophan are essential amino acids.
B. Glycine does not have chiral centre.
C. Proline is a six membered cyclic ring amino acid.
D. Histidine does not contain heterocyclic ring in its structure.
E. Cysteine has characteristic feature of side chain as \(MeS-CH_2-CH_2-\).
Which from following is an essential amino acid?
Which from following amino acids contains heterocyclic ring at a side chain (R) group?
Which types of bonds or interactions are found in the $\beta$-helix of protein?
Identify the correct statement among the following:
Which of the following compounds is least likely to give effervescence of CO$_2$ in presence of aq. NaHCO$_3$?

A dipeptide, “x”, on complete hydrolysis gives “y” and “z”; “y” on treatment with aqueous HNO$_2$, produces lactic acid. On the other hand, “z” on heating gives the following cyclic molecule.

Based on the information given, the dipeptide X is:

Which amino acid from following contains highest number of N atoms in it?
Match List-I with List-II:
List-I (Amino Acid)List-II (Nature of Amino Acid)
(A) Valine(I) Basic amino acid
(B) Glycine(II) Neutral optically active amino acid
(C) Lysine(III) Acidic amino acid
(D) Glutamic acid(IV) Neutral optically inactive amino acid
Choose the correct answer from the options given below:
Which among the following is an essential amino acid?
Which of the following compounds can form a zwitterion ?
Which amino acid from following contains highest number of N atoms in it?