本题目来源于试卷: Interaction & Interdependence C.2 Cell Respiration，类别为 IB生物学
[单选题]
Which statement(s) areaors s8,cm4x2o d+i80kco0vm -k: lgzmk:y k3correct in explaining why lipids are used as a long-term energy store instead of c3kz:kg: ly km-arbohydrates?
I.Lipids contain more energy per gramme than carbohydrates
II.Lipids are insoluble, whereas carbohydrates are not
III.Lipids contain less oxygen than carbohydrates
A. I only
B. I and II only
C. II and III only
D. I, II and III
参考答案: D
本题详细解析:
Statement I is correct, as lipids76f2gmpiz j*t transfer around twice as much energy as carbohydrates during respiration. Statement II is correct as lipids are insoluble, so they can be stored without affecting the osmotic balance of tissues, whereas carbohydrates are soluble. Statement III is correct, as lipids contain ij7p f26t*gmz less oxygen than carbohydrates, allowing them to store more energy in more carbon-hydrogen bonds. Choice D is correct.
Choices A, B and C are incorrect as they do not include all three statements.
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