試題詳解

73. Which of the following statements about glutathione are CORRECT? ① Glutathione is an antioxidant. ② Glutathione is a tetrapeptide. ③ Glutathione is not involved in detoxification of xenobiotics. ④ The biosynthsis of glutathione synthesis occurs as a part of γ-glutamyl cycle. ⑤ Oxidized glutathione is reduced by glutathione reductase.
(A) ①,②,③
(B) ①,③,④
(C) ①,④,⑤
(D) ②,③,④
(E) ①,②,⑤