Question

Which blood cells can engulf bacteria by phagocytosis?

• A. Eosinophil and Basophil
• B. Basophil and Lymphocyte
• C. Neutrophil and Monocyte
• D. Neutrophil and Lymphocyte

Answer 1

Answer: (C)

Neutrophil and Monocyte

• Neutrophils are the granular leukocytes that phagocytize pathogens (bacteria).
• Monocytes are agranular leukocytes that transform into macrophages and phagocytize pathogens (bacteria).
• Eosinophils can phagocytize antigen-antibody complexes and allergens but not the bacteria directly.
• Basophils are involved in histamine and heparin secretion. They don't perform phagocytosis.
• Lymphocytes are involved in specific immunity. They don't perform phagocytosis.

Thus, the correct answer is option C.