Where are bacteria killed by enzymes and toxic substances once ingested by a white blood cell?

• A. Nucleus.
• B. Phagolysosome.
• C. Lysosome.
• D. Cytoplasm.
• E. Phagosome.

Answer: (B)

Verified step by step guidance

1. Understand the process of phagocytosis, where white blood cells ingest harmful particles, bacteria, or dead cells.
2. Learn about the formation of a phagosome, which is a vesicle that forms around the ingested material within the white blood cell.
3. Explore the role of lysosomes, which contain enzymes and toxic substances that can break down the ingested material.
4. Study the fusion of the phagosome with a lysosome to form a phagolysosome, where the ingested material is exposed to enzymes and toxic substances.
5. Recognize that the phagolysosome is the site where bacteria are killed by enzymes and toxic substances within the white blood cell.