Cryopreservation is done at temperature

Options

A. `-140^(@)C`
B. `-196^(@)C`
C. `-120^(@)C`
D. `-180^(@)C`

Answer

**Step-by-Step Text Solution:**

1. **Understanding Cryopreservation**: Cryopreservation is a method used to preserve cells, tissues, or organs by cooling them to very low temperatures. This process is essential for maintaining the viability of biological materials.

2. **Temperature Range**: The question asks for the specific temperature at which cryopreservation is performed. The options given are -140°C, -196°C, -120°C, and -180°C.

3. **Identifying the Correct Temperature**: Among the options, the temperature that is commonly used for cryopreservation is -196°C. This temperature is crucial because it allows for the preservation of cells and tissues without causing ice crystal formation, which can damage the cells.

4. **Importance of Low Temperature**: Storing biological materials at -196°C is vital for maintaining their viability. This low temperature ensures that metabolic processes are halted, and the cells remain in a dormant state, allowing them to be stored for extended periods.

5. **Application of Cryopreservation**: The stored cells, tissues, or organs can later be thawed and used for various medical purposes, such as transplants or research, making cryopreservation a critical technology in biotechnology and medicine.

**Final Answer**: Cryopreservation is done at a temperature of -196°C.

---