Amino Acids

Question 1

Nonpolar nonaromatic amino acids

Answer 1

Tend to have side chains that are saturated hydrocarbons:

• Alanine, valine, leucine, and isoleucine
• Glycine, proline (cyclic with secondary amine), and methionine (contains sulfur)

Question 2

Aromatic amino acids

Answer 2

Tryptophan, phenylalanine, tyrosine

Question 3

Polar amino acids

Answer 3

Tend to have terminal groups containing oxygen, nitrogen, sulfur
-Serine, threonine, asparagine, glutamine, and cysteine

Question 4

Negatively charged (Acidic) amino acids

Answer 4

Aspartic acid and glutamic acid

Question 5

Positively charged (basic) amino acids

Answer 5

Arginine, lysine, and histidine

-Have protonated amino group in their R groups