本题目来源于试卷: Unity and Diversity A.4 Cell Structure，类别为 IB生物学
[单选题]
Paramecium produces enzymes that cat8v0c) dragk2yalx;(d.2 8;pg*v jpi+yp xg3a7wnbxn i oyse different chemical reactions taking place in the cytoplasm. What function of life is dgx+opipbx;28d3w np 7*yj i g.na(v;xemonstrated in this situation?
A. Excretion
B. Homeostasis
C. Reproduction
D. Metabolism
参考答案: D
本题详细解析:
Choice A - Excretion is the process wherein waste 483u xq wqci3r, hbww6rc)l:i and excess water in the organism are removed. Paramecia expel waste producwirixcqq:w3rh4, cbw6)u 38lts such as carbon dioxide through the process of diffusion.
Choice B - Homeostasis pertains to the ability of living things to maintain a stable internal environment. Paramecia maintain a stable internal condition by expelling excess water using the contractile vacuole.
Choice C - Reproduction is the biological process by which organisms produce offspring that are biologically similar to themselves. Paramecia can reproduce sexually through meiosis and asexually through mitosis.
Choice D - Metabolism refers to all the chemical reactions in organisms such as anabolic and catabolic reactions. Paramecia produce enzymes that catalyse different catabolic and anabolic reactions in the cell.
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