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From his experiments, S.L. Miller produced amino acids by mixing the following in a closed flask

1. CH4, H2, NH3 and water vapor at 800°C
2. CH4, H2, NH3 and water vapor at 600°C
3. CH4, H2, NH3 and water vapor at 600°C
4. CH4, H2, NH3 and water vapor at 800°C

Correct answer: CH4, H2, NH3 and water vapor at 800°C

Solution

Miller’s experiment simulated primitive atmospheric conditions using methane, hydrogen, ammonia, and water vapor in a closed apparatus. The mixture was heated to about 800°C to provide the energy needed for chemical reactions that formed amino acids.

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