MCAT Biology Question 118: Answer and Explanation
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Question: 118
13. Which cell type is a phagocyte that attacks bacterial pathogens in the bloodstream?
- A. Neutrophils
- B. Eosinophils
- C. Basophils
- D. Dendritic cells
Correct Answer: A
Explanation:
The only phagocytes that attack bacteria on this list are neutrophils and dendritic cells. Dendritic cells are able to sample and present any type of material, and reside in the skin. Neutrophils, on the other hand, are present in the bloodstream and can attack bacteria present there or in tissues. Eosinophils and basophils are involved in the formation of allergies; eosinophils also defend against parasites.