Which of the following statements about amino acids is incorrect?

Question

Which of the following statements about amino acids is incorrect? (A) Essential amino acids are not synthesised in the body, therefore have to be provided in the diet (B) Leucine, isoleucine, lysine, valineare essential amino acids (C) Cysteine and methionine are sulphur containing amino acids (D) Lysine and arginine are acidic amino acids

Tardigrade Admin · Accepted Answer

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

Q. Which of the following statements about amino acids is incorrect?

Essential amino acids are not synthesised in the body, therefore have to be provided in the diet

Leucine, isoleucine, lysine, valineare essential amino acids

Cysteine and methionine are sulphur containing amino acids

Lysine and arginine are acidic amino acids

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

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