本题目来源于试卷: SL/HL Topic B2.1 Membranes and membrane transport，类别为 IB生物学
[问答题]
9. Animals are adapted to different habitats and different ambient and inte( cgxtvfmi*p pe88k 75rnal 57*tiepc(gpm8vk fx8 gfc6 a ;iw31fmtemperatures. Explain how the composition of the cell membrane can be one mw1g f;ai36fcform of adaptation to temperature.
参考答案: Fatty acid layer of membrane can have unsaturated and saturated fatty acids (in the lipid bilayer). Unsaturated fatty acids have lower melting points/converse.
Saturated fatty acids make the membrane more stable at high temperatures/converse.
Cholesterol increases membrane fluidity/decreases the effect of cold temperatures.
Fish living in cold waters have a high proportion of unsaturated fatty acids in their membranes/other relevant example.
本题详细解析:
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