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) aq3rpmh h1 m145u6dbk gre xx 1iv3y)oh/ fcorrect in explaining why lipids are used as a long-term ener/)x1fy h3 xoivgy store instead of carbohydrates?
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 lytyboafy 2e2:*0 /ji:9hcw m o(upt8kipids 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,8 :2ohktcj* 92otb(u f wiamy e/y0y:p as lipids contain 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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