2. The first major step of CO₂ fixation into carbohydrates in photosynthesis is catalyzed by
(A) rubisco activase
(B) ribulose 1,5-bisphosphate carboxylase
(C) 3-phosphoglycerate
(D) Thioredoxin

這題在考什麼觀念本題測驗考生對**光合...