Which of the following statements is not true for cancer cells is relation to mutations ?

Options

A. Mutations inactivata the cell control
B. Mutations inhibit production of telomerase
C. Mutations in proto-oncogenes accelerate the cell cycle
D. Mutations destroy telomerase inhibitors

Answer

To determine which statement is not true regarding cancer cells in relation to mutations, we need to analyze the statements provided and understand the role of mutations in cancer development.

### Step-by-Step Solution:

1. **Understanding Mutation**:
- Mutation refers to any change in the DNA sequence. These changes can affect the structure and function of proteins, which can lead to various cellular consequences, including cancer.

2. **Role of Mutations in Cancer**:
- In cancer cells, mutations can lead to uncontrolled cell division. This is primarily due to mutations in genes that regulate the cell cycle.

3. **Evaluating the Statements**:
- **Statement 1**: "Mutations inactivate cell control."
- This statement is true. Mutations can disrupt the normal regulatory mechanisms of the cell cycle, leading to uncontrolled growth.

- **Statement 2**: "Mutations inhibit the production of telomerase."
- This statement is not true. In cancer cells, mutations often lead to an increase in telomerase production, allowing cells to divide indefinitely by maintaining their telomeres.

- **Statement 3**: "Mutations in proto-oncogenes accelerate the cell cycle."
- This statement is true. Mutations in proto-oncogenes convert them into oncogenes, which promote cell division and can lead to cancer.

- **Statement 4**: "Mutations destroy telomerase inhibitors."
- This statement is true. Mutations can lead to the loss of inhibitors of telomerase, allowing the enzyme to function and protect telomeres, contributing to the immortality of cancer cells.

4. **Conclusion**:
- The statement that is not true regarding cancer cells in relation to mutations is **Statement 2**: "Mutations inhibit the production of telomerase."

### Final Answer:
The statement that is not true for cancer cells in relation to mutations is: **"Mutations inhibit the production of telomerase."**