Proteins: Structure and Functions · NCERT Biology

Which of the following is a basic amino acid?

  1. Valine
  2. Glutamate
  3. Lysine
  4. Tyrosine
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Correct answer: Lysine

Lysine is a basic amino acid because its R-group contains an additional amino group. Valine is neutral, glutamate is acidic, and tyrosine is aromatic.

Difficulty: Medium Question 20 of 20

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