Form and Function B.3 Membranes & Membrane Transport (id: 68bc5ec90)

本题目来源于试卷: Form and Function B.3 Membranes & Membrane Transport，类别为 IB生物学

[问答题]
The table shows the resul vzkd51xupl es prr:).;mmj3 5ts from a study on the percen(qi;yg ht+il *tage of cholesterol found in thgi*y+ ;tl(qi he cell membrane of epithelial skin cells of different animals.

1.Calculate the mean percentage of cholesterol found in the cell membrane across all the animals listed in the table.
mean =__%
2.State one role of cholesterol in the cell membrane.
3.Suggest why arctic foxes have a greater mean percentage of cholesterol in their cell membranes than kangaroos.
4.Estimate, with a reason, the percentage of cholesterol that would be found in the cell membranes of polar bears.
5.Explain why the mass of cholesterol in the cell membranes is calculated as a percentage rather than a whole number.
6.Suggest why the cells studied may contain a higher percentage of cholesterol than shown in the table.
7.1Based on the data provided, suggest which animal in the study exhibits the highest fluidity in its epithelial skin cell membrane.
7.2Explain your answer to part (i).

参考答案:
17.3!num!1%


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