Which term describes the process by which certain cells ingest foreign or other particles?

• A. Phagocytosis
• B. Pinocytosis
• C. Osmosis
• D. Exocytosis

Answer: (A)

Verified step by step guidance

1. Understand that the question is asking for the term that describes a cellular process where cells ingest foreign or other particles.
2. Recall that 'phagocytosis' is a type of endocytosis where cells engulf large particles such as bacteria or debris, effectively 'eating' them.
3. Recognize that 'pinocytosis' involves the ingestion of fluids and dissolved substances, often called 'cell drinking', which is different from ingesting large particles.
4. Note that 'osmosis' refers to the passive movement of water across a semipermeable membrane, not the ingestion of particles.
5. Understand that 'exocytosis' is the process by which cells expel materials, the opposite of ingestion.