Which of the following was formed in S. Miller's experiment?

Options

A. Microspheres
B. Nucleic acids
C. Amino acids
D. UV radiations

Answer

**Step-by-Step Solution:**

1. **Understanding the Experiment**: The Miller-Urey experiment was designed to test the chemical origins of life by simulating the conditions of early Earth. The researchers aimed to see if organic compounds could be formed from inorganic precursors.

2. **Conditions of the Experiment**: The experiment used a reducing atmosphere, which included gases such as methane, ammonia, hydrogen, and water vapor. These gases were believed to be present in the primitive Earth atmosphere.

3. **Application of Energy**: A strong electric field was applied to the mixture of gases. This was intended to mimic the energy sources available on early Earth, such as lightning.

4. **Formation of Organic Compounds**: The result of the experiment was the formation of simple organic compounds. Specifically, the experiment successfully produced amino acids, which are the building blocks of proteins.

5. **Analyzing the Options**:
- **Microspheres**: These are small spherical structures that can form under certain conditions but were not a product of the Miller-Urey experiment.
- **Nucleic Acids**: These are complex molecules (like DNA and RNA) that were not formed in this experiment.
- **Amino Acids**: This is the correct answer, as the experiment produced several amino acids.
- **UV Radiation**: This is not a product of the experiment but rather a type of energy that could have been present on early Earth.

6. **Conclusion**: Based on the findings of the Miller-Urey experiment, the correct answer to the question is that amino acids were formed.

**Final Answer**: Amino acids were formed in S. Miller's experiment.

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