Name the organism which is the source of heat -stable PCR enzyme

Options

A. Thermophilus aquaticus
B. Haemophillus influenzae
C. Thermo proteus
D. Bacillus thuringiensis

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for the organism that provides a heat-stable enzyme used in PCR (Polymerase Chain Reaction).

2. **Identifying the Enzyme**: The enzyme used in PCR is DNA polymerase. This enzyme is crucial for synthesizing new DNA strands during the amplification process.

3. **Importance of Heat Stability**: In PCR, the reaction involves high temperatures (around 95°C) to denature the DNA. Therefore, the DNA polymerase used must be heat-stable, meaning it should not denature or lose its function at high temperatures.

4. **Source of Heat-Stable DNA Polymerase**: The heat-stable DNA polymerase is derived from a specific organism that thrives in high-temperature environments.

5. **Naming the Organism**: The organism known for providing this heat-stable enzyme is **Thermus aquaticus**. This bacterium can withstand temperatures around 100°C, making its DNA polymerase suitable for PCR.

6. **Conclusion**: Therefore, the answer to the question is **Thermus aquaticus**.

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