本题目来源于试卷: Interaction & Interdependence C.3 Photosynthesis，类别为 IB生物学
[单选题]
Which of the following;8q. i m*vqmnut9f : e+tmz:ve correctly shows where chemiosmosis takes place in phghdd pw9h sv-i x-)4u ,2o,qlbotosynthesis and aerobic ce,iho d2dwlg, s - -xvph4uq9)bll respiration?
A. Thylakoid membrane Inner mitochondrion membrane
B. Stroma Mitochondrial matrix
C. Starch grain Cytoplasm
D. Chloroplast envelope Cell membrane
参考答案: A
本题详细解析:
A Chemiosmosis is a process that is common to both photosynthesis and aerobic cell respiration. In photosynthesis, chemiosmosis takes place along thylakoid membranes. In aerobic cell respiration, chemiosmosis takes place along the inner mitochondrial membrane. Chemiosmosis does not take place inside the stroma but instead, the Calvin cycle occurs here. Chemiosmosis does not take place inside the mitochondrial matrix but instead, the Krebs cycle and the link reaction of aerobic cell respiration take place here (Choice B). Chemiosmosis also does not take place on or in starch grains. Glucose, produced by photosynthesis, is stored as starch. Similarly, chemiosmosis does not take place in the cytoplasm during aerobic cell respiration; glycolysis takes place here (Choice C). The chloroplast envelope is the boundary of the chloroplast and the cell membrane similarly is the boundary of the cell. Chemiosmosis does not take place in either of these structures (Choice D).
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