The cell ingests the solid particles by

Options

A. exocytosis
B. pinocytosis
C. phagocytosis
D. endocytosis

Answer

To answer the question "The cell ingests the solid particles by," we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Options**:
The question provides four options:
- Exocytosis
- Phenocytosis
- Phagocytosis
- Endocytosis

2. **Defining Exocytosis**:
Exocytosis is the process by which cells expel materials to the outside environment. This is not related to the ingestion of solid particles.

3. **Defining Phenocytosis**:
Phenocytosis, also known as bulk-phase endocytosis or fluid endocytosis, refers to the ingestion of liquid particles. This process does not involve solid particles, so it is not the correct answer.

4. **Defining Phagocytosis**:
Phagocytosis is the process by which a cell engulfs solid particles. During this process, the cell forms an internal compartment known as a phagosome to enclose the solid material. This is the correct mechanism for the ingestion of solid particles.

5. **Defining Endocytosis**:
Endocytosis is a general term that refers to the process of bringing materials into the cell from the exterior. However, it includes various types of ingestion, not specifically solid particles.

6. **Conclusion**:
Based on the definitions and processes described, the correct answer to the question "The cell ingests the solid particles by" is **Phagocytosis**.

### Final Answer:
The cell ingests the solid particles by **Phagocytosis**.

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