Multiple choice

Depending on polarity and charge of R groups match the following amino acids: Name Type

  1. Glycine A. Polar Uncharged amino acid
  2. Glutamine B. Non-polar aliphatic amino acid
  3. Tyrosine C. Negatively charged amino acid
  4. Glutamate D. Positively charged amino acid
  5. Histidine E. Aromatic amino acid

  1. 1 - B, 2 - D, 3 - E, 4 - C, 5 - A

  2. 1 - B, 2 - A, 3 - E, 4 - C, 5 - D

  3. 1 - C, 2 - A, 3 - E, 4 - B, 5 - D

  4. 1 - B, 2 - D, 3 - E, 4 - A, 5 - C

  5. 1 - B, 2 - E, 3 - D, 4 - C, 5 - A
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Non-polar aliphatic amino acids have hydrophobic and non-polar R groups. Glycine is a non-polar aliphatic amino acid. Polar uncharged amino acids have hydrophilic R groups. Glutamine is a polar uncharged amino acid. Aromatic amino acids are non-polar and contain aromatic side chains. Tyrosine is an aromatic amino acid. Negatively charged amino acids possess R groups with net negative charge. Glutamate is a negatively charged amino acid. Positively charged amino acids have R groups, which are hydrophilic and with positive charge. Histidine is a positively charged amino acid.

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