Which of the following statements about amino acids is incorrect ?

Options

A. Essential amino acids are not synthesised in the body, therfore have to be provided in the diet.
B. Leucine, isoleucine, lysine, valine are essential amino acids.
C. Cysteine and methionine are sulphur containing amino acids.
D. Lysine and arginine are acidic amino acids.

Answer

D

Explanation

Acidic amino acids have an extre carboxylic group (mono-amino dicarboylic), e.g., glutamate (glutamic acid or Glu), asparate (aspartic acid or Asp).
Basic acids have an addition amino group without forming amides (diamino monocarboxylic) e.g., arginine (Arg), lysine (Lys).