Question

# A basic amino acid is

A
Leucine
B
Methionine
C
Aspartic acid
D
Lysine

Solution

## The correct option is D LysineLysine is basic amino acid because it has basic side chains at neutral pH. It has an isoelectric pH of 7. It has polar end NH$$^{3+}$$ which helps in the formation of ionic bond with acidic amino acids. Histidine and arginine are other basic amino acid.So, the correct answer is option D.Biology

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