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HL Topic A2.1 Origin of cells (id: b02cf07ae)

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admin 发表于 2025-1-24 10:46:28 | 显示全部楼层 |阅读模式
本题目来源于试卷: HL Topic A2.1 Origin of cells,类别为 IB生物学

[问答题]
6. The Miller-Urey experiment produced organic molecules in an k 1s6qzxoxs.5atmosphere thac;)zw, h0q xxwt, in 1952, was thought to have been like the atmosphere on earth prior to the evolution of life. In which way was the experimq)xwwz c;xh0, ent’s model atmosphere different from today’s scientific understanding of the atmosphere at the origin of life on earth?




参考答案:
The atmospheric conditions used in Miller’s investigation contained high concentrations of methane and ammonia, but the early Earth atmosphere is now thought to have much lower concentrations of these gases.
Or
 The atmospheric conditions used in the experiment contained much lower concentrations of carbon dioxide, and nitrogen gases compared to those thought to be in the early Earth atmosphere.
Note: Only one of these details is required for the mark.



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