Amino acids, Peptides, and proteins.

Question 1

Nonpolar amino acids

Answer 1

Glycine-G
Alanine - A
Valine - V
Leucine - L
Isoleucine - I
Methionine  - M
Tryptophan - W
Phenylalanine - F
Proline - P

Question 2

Polar amino acids

Answer 2

Serine - S
Threonine - T
Cysteine - C
Tyrosine - Y
Asparagine - N
Glutamine - Q

Question 3

Acidic amino acids (pI<6)

Answer 3

Aspartic acid

Glutamic acid

Question 4

Basic amino acids (pI>6)

Answer 4

Histidine
Arginine
Lysine

Question 5

isoelectric point

Answer 5

The isoelectric point for a polypeptide is the pH at which the molecule does not have a net charge.