Question

Among the following, Acidic amino acid, Basic amino acid and Neutral amino acids are in the sequence of

• A. Glutamic acid - Lysine - Valine
• B. Lysine - Valine - Glutamic acid
• C. Glutamic acid - Valine - Lysine
• D. Lysine - Glutamic acid - Valine

Hint:

Memorise representative amino acids: acidic = Asp, Glu; basic = Lys, Arg, His; neutral non-polar = Val, Leu, Ile.
Use these representatives to quickly categorise sequences in questions.
Think "Glu (acidic) → Lys (basic) → Val (neutral)" as a simple mnemonic for this Q-type.

Answer 1

The Correct Option is A

Classify the given amino acids by side-chain properties:
Glutamic acid (Glu) is an acidic amino acid (negatively charged at physiological pH).
Lysine (Lys) is a basic amino acid (positively charged at physiological pH).
Valine (Val) is a neutral, non-polar (hydrophobic) amino acid.
The requested order "Acidic → Basic → Neutral" corresponds to Glutamic acid → Lysine → Valine, which is option (1).