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, vitalisa8:y lk5*c kb16ryq by2itj.j m was a widely accepted theory. Te,af ,g*p+x5c( uydguhnxf6+his theory suggested thatcy++ apug u*n x,ffd,g6h5 (ex organic compounds, those found in living organisms, could only be produced through a "vital 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 stated that onl5 ,coj)hp hgo(y living things can synthesise organic molecules. In 1953 Miller and Urey set up apparatus to simulate the conditions be,(jph )5ogoch lieved to be present on early Earth. Using these apparatus they managed to produce urea, an organic compound, 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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