Multiple choice

This ____________ non-essential amino acid has a polar side group.

  1. Arginine

  2. Tyrosine

  3. Serine

  4. Selenocysteine

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Tyrosine is one of the 20 amino acids that are used by cells to synthesize proteins. Its codons are UAC and UAU. It is a non-essential amino acid with a polar side group.