Stanley Miller synthesized in his experiment :

Options

A. Virus
B. Protein
C. Amino acid
D. Cell

Answer

**Step-by-Step Solution:**

1. **Understanding the Experiment**: Stanley Miller conducted an experiment in 1953 to investigate the origins of life by simulating the conditions of early Earth. He aimed to demonstrate how simple organic compounds could be formed from inorganic precursors.

2. **Materials Used**: In his experiment, Miller used a closed apparatus that contained water (to simulate oceans), methane (CH₄), ammonia (NH₃), and hydrogen (H₂). These gases were thought to represent the atmospheric conditions of early Earth.

3. **Conditions Applied**: The mixture of gases was subjected to electrical discharges (to simulate lightning) and high temperatures (around 800 degrees Celsius) for an extended period. This was done to provide the energy necessary for chemical reactions to occur.

4. **Products Synthesized**: After running the experiment for several weeks, Miller analyzed the contents of the apparatus and found that several simple organic molecules had formed. Notably, he synthesized amino acids, which are the building blocks of proteins.

5. **Specific Amino Acids Identified**: Among the amino acids produced were alanine, glycine, and aspartic acid. These findings were significant as they suggested that the basic components of life could arise from simple chemical reactions under prebiotic conditions.

6. **Conclusion**: Therefore, the correct answer to the question is that Stanley Miller synthesized amino acids in his experiment.

**Final Answer**: Stanley Miller synthesized amino acids, including alanine, glycine, and aspartic acid, in his experiment.

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