試卷名稱:114年 - 114 學士後醫學系招生考試試題:普通生物及生化概論#126681
年份:114年
科目:學士後西醫-普通生物及生化概論
18. Which of the following statements about amino acid residues is correct? ① Phenylalanine has UV absorption at 260 nm. ② Glycine has a positive net charge at acidic solutions. ③ The side chain of serine cannot be ionized. ④ Isoleucine and leucine have the same molecular weight. ⑤ Cysteine can be oxidized to form cystine.
(A) ①②③
(B) ①③④
(C) ①④⑤
(D) ②④⑤
(E) ③④⑤