Stanley Miler had put the Oparin-Haldane theory to test in 1953 by creating in the laboratory, the probable conditions on the primitive earth. In the experiment simple amino acids were synthesized from which of the following modules, as observed after eighteen days?

Options

A. `H_2,O_2, N_2, and H_2O `
B. ` CH_4,CH,H_2O_2`
C. ` H_2, NH_3 , CH_4 and` water vapour
D. `NH_3, CH_4 and O_2`

Answer

**Step-by-Step Solution:**

1. **Understanding the Experiment**: In 1953, Stanley Miller conducted an experiment to test the Oparin-Haldane theory regarding the origin of life on Earth. He aimed to recreate the conditions of primitive Earth in a laboratory setting.

2. **Setup of the Experiment**: Miller created a closed system that mimicked the early Earth's atmosphere. He included various gases that were believed to be present in the primitive atmosphere.

3. **Gases Used**: The gases used in Miller's experiment included:
- Hydrogen (H2)
- Ammonia (NH3)
- Methane (CH4)
- Water vapor (H2O)

4. **Simulating Lightning**: To simulate the energy sources that could drive chemical reactions, Miller introduced electrical sparks into the system, representing lightning that might have occurred on early Earth.

5. **Duration of the Experiment**: The experiment was conducted over a period of 18 days, during which the gases reacted under the simulated conditions.

6. **Results of the Experiment**: After 18 days, Miller analyzed the contents of the closed system and found that simple organic compounds had formed, including amino acids, which are the building blocks of proteins.

7. **Conclusion**: The correct answer to the question regarding which modules were used in Miller's experiment is:
- **H2, NH3, CH4, and water vapor**.

**Final Answer**: The correct option is the third one: H2, NH3, CH4, and water vapor.

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