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 diffs 6*l:nl*1 g*uh(vgtqb:wwhh+ sos7 merent ambient and inte.d.6flpo ywf8, prrjr0ee 59xenq,g( rnal temperatures. Explain how the composition of the cell membrane can be one form of adaptation to tempe ge.y xlwfep0 e6 qf(n j5rr,pd9o,8.rrature.
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.
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