本题目来源于试卷: Interaction & Interdependence C.3 Photosynthesis，类别为 IB生物学
[单选题]
In algae, what is the role ou; vbvp7.-mbsl99 zrzf carbon dioxide in photosystem II, and what form 1 u)xzyrnxh /wx y+;z2is it found izy/nu) h+12wx z ;rxxyn?
A. Carbon dioxide gas /Reacts with RuBP in the Calvin cycle
B. Hydrogen carbonate ions /Proton acceptor for photolysis
C. Carbon dioxide gas /Synthesises carbohydrates
D. Hydrogen carbonate ions /Acts as a final electron acceptor
参考答案: B
本题详细解析:
B Algae require carbon dioxide in the form of hydrogen carbonate ions for Photosystem II to function well. Hydrogen carbonate acts as an acceptor for protons that are produced in photolysis, Choice B is correct. Choices A and C are incorrect as photosystem II uses carbon dioxide in the form of hydrogen carbonate ions, not carbon dioxide gas. Choice D is incorrect as carbon dioxide does not act as a final electron acceptor, NADP+does.
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