23. Which of following reaction occurs in thodopsin stimulated by light ?
(A) β-carotene turns into retinal；
(B) retinal is reduced into retinol
(C) cis-retinal is isomerized into all-trans-retinal；
(D) all-trans-retinal is isomerized into cis-retinal

1. 題目解析這道題目考察的是視紫紅質...