本题目来源于试卷: Form and Function B.5 Cell Specialization，类别为 IB生物学
[单选题]
Which of the following st)c :g caims-qsp f2.rzw30 b+yatements about the effect of surface czszy0 9ed5nkr;o4f2 area and volume on the cell’s processes is fal enyc9 o54;rzf02skz dse?
A. The rate at which materials enter or leave the cell depends on the surface area.
B. A small cell will be able to take in sufficient materials by diffusion.
C. The rate at which materials are used and produced depends on the surface area.
D. A large spherical cell will not be able to excrete waste products at a sufficient rate by diffusion.
参考答案: C
本题详细解析:
Choice A - The surface area of a cell affects the rate of diffusion of materials in and out of the cell. Choice B - A small cell will have a bigger surface area to volume ratio which means that diffusion will be easier and other cell processes will become faster. Choice C - The volume of the cell affects the rate at which materials are produced. Choice D - A larger spherical cell will have a low surface area to volume ratio. Therefore, the comparatively large volume of cytoplasm may produce waste products at a rate too high to rely on diffusion through the comparatively small surface area of the cell membrane.
| 
