Stanley Miller in his experiment to prove the Oparin-Haldane hypothesis used ……….and……...in the spark chamber.

Options

A. `CH_3, NH_3, H_2O`
B. `CH_4, NH_3, H_2`
C. `CH_4, NH_3` , Urea
D. `CH_4, NH_3`, Uric acid

Answer

To answer the question regarding Stanley Miller's experiment to prove the Oparin-Haldane hypothesis, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Experiment**: Stanley Miller conducted an experiment in 1953 to simulate the conditions of early Earth and test the Oparin-Haldane hypothesis, which suggests that life originated from simple organic compounds.

2. **Identifying the Spark Chamber**: In the experiment, Miller used a closed system known as a spark chamber. This chamber allowed him to create conditions similar to those believed to exist on the early Earth.

3. **Gases Used in the Experiment**: The primary gases that Miller used in his spark chamber were:
- Methane (CH₄)
- Ammonia (NH₃)
- Hydrogen (H₂)
- Water vapor (H₂O)

4. **Temperature Conditions**: The experiment was conducted at a high temperature of about 800 degrees Celsius, which mimicked the volcanic and high-energy conditions of early Earth.

5. **Outcome of the Experiment**: Miller observed the formation of amino acids, which are the building blocks of proteins, thus supporting the idea of chemical evolution.

6. **Final Answer**: Therefore, the two gases that can be filled in the blanks of the question are **methane (CH₄)** and **ammonia (NH₃)**.