本题目来源于试卷: Unity and Diversity A.3 Origin of Cells，类别为 IB生物学
[单选题]
In the early 19th century, vitalism was a w7yio9 f-oi. jwidely c7b8kj( hkj5v-w. v qeaccepted theory. This theory suggested that organic compounds, those found in living organisms, could only be produced through a "vit.5j kh78(vqcekj wvb-al force" present in living matter.
What was the role of urea in falsifying the theory of vitalism?
A. Urea is produced by kidneys, indicating that living things can make organic compounds.
B. Urea can be produced in laboratories, indicating that living things cannot synthesize organic compounds.
C. Urea can be produced in laboratories, indicating that not only living things can synthesize organic compounds.
D. Urea is produced by the kidneys, indicating that not only laboratories can make organic compounds.
参考答案: C
本题详细解析:
The theory of vitalism statpyg7 ,khl22oa ed that only living things can synthesise organic molecules. In 1953 Miller and Urey set up apparatus to simulate the conditions believed to be present on early Earth. Using these apparatus they managed to produce urea, an organic compoundo2p k2,g h7lay, in the laboratory which falsified this theory of vitalism. Therefore Choice C is correct.
The fact that urea is produced by the kidneys (Choices A and D) does not falsify the theory of vitalism, but rather supports it. The production of urea in laboratories does not mean it cannot be synthesised by living things (Choice B).
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