Join thousands of students who trust us to help them ace their exams!Watch the first video
Multiple Choice
Which type of immune cell is primarily responsible for killing infected cells?
A
Eosinophils
B
Natural killer (NK) cells
C
Neutrophils
D
Basophils
Verified step by step guidance
1
Understand the role of different immune cells in the immune response. Eosinophils, neutrophils, and basophils are types of granulocytes involved mainly in inflammation, allergic reactions, and defense against parasites.
Recognize that Natural Killer (NK) cells are a type of lymphocyte distinct from granulocytes and are part of the innate immune system.
Recall that NK cells specialize in identifying and killing cells that are infected by viruses or have become cancerous without the need for prior sensitization.
Note that NK cells induce apoptosis (programmed cell death) in infected or abnormal cells by releasing cytotoxic granules containing perforin and granzymes.
Conclude that among the options given, Natural Killer (NK) cells are primarily responsible for killing infected cells due to their cytotoxic activity.