The process by which a white blood cell or an amoeba engulfs bacteria is called phagocytosis.

Answer

**Step-by-Step Solution:**

1. **Understanding Phagocytosis**:
- Phagocytosis is a specific type of endocytosis where cells, such as white blood cells or amoebas, engulf large particles, such as bacteria.

2. **Identifying the Process**:
- In phagocytosis, the cell membrane extends around the particle (in this case, bacteria) and forms a pocket. This pocket then pinches off to form a vesicle containing the engulfed material.

3. **Role of White Blood Cells and Amoebas**:
- White blood cells (like macrophages) and amoebas are known for their ability to perform phagocytosis. They utilize this process to protect the body from pathogens or to obtain nutrients.

4. **Conclusion**:
- Since the question states that the process by which a white blood cell or an amoeba engulfs bacteria is called phagocytosis, we can conclude that the statement is true.

**Final Answer**: The statement is true.

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