Which one engulfs pathogens rapidly?
Correct answer: D. Neutrophils
- A. Acidophils
- B. Monocytes
- C. Basophils
- D. Neutrophils
Explanation
Neutrophils are the most abundant type of white blood cells and are an integral part of the immune system. These phagocytes are normally found in the bloodstream. However, during the acute phase of inflammation, particularly as a result of bacterial infection, neutrophils leave the vasculature and migrate toward the site of inflammation in a process called chemotaxis. They are the predominant cells in pus, accounting for its whitish/yellowish appearance. Neutrophils respond within an hour of tissue injury and are the hallmark of acute inflammation. Monocytes are also phagocytes, but they take approximately 78 hours to reach the site of injury. Acidophils and basophils are not phagocytic in nature.
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Biological classification uses taxonomic ranks, binomial nomenclature and shared characteristics to organize life into kingdoms. The major groups include prokaryotes, protists, fungi, plants and animals, with comparisons based on cell type, cell wall, nutrition, body organization, reproduction and evolutionary relationships; prokaryotes lack a membrane-bound nucleus.
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