試題詳解

2. Which of the following statements about aromatic amino acids is correct?
(A) All are strongly hydrophilic.
(B) Histidine is categorized as aromatic.
(C) On a molar basis, tryptophan absorbs more ultraviolet light (280 nm) than tyrosine.
(D) The major contribution to the characteristic absorption of light at 280 nm by proteins is the phenylalanine R group.
(E) The presence of a ring structure in an amino acid determines whether or not it is aromatic.