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Portage Microbiology Exam 3 Questions and Answers | Latest Version | 2025/2026 | Correct & Verified
What part of the immune system acts as the first line of defense?✔✔ Skin
What type of immunity is present from birth and responds quickly to invaders?✔✔ Innate immunity
What type of immunity develops after exposure to specific antigens?✔✔ Adaptive immunity
What kind of white blood cells engulf and destroy pathogens?✔✔ Phagocytes
What is the main role of neutrophils in the immune response?✔✔ Phagocytosis
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What is the term for a substance that triggers an immune response?✔✔ Antigen
What cells produce antibodies in response to antigens?✔✔ B cells
What immune cells are responsible for killing virus-infected cells?✔✔ Cytotoxic T cells
What type of immunity results from vaccination?✔✔ Artificial active immunity
What is the function of memory cells in the immune system?✔✔ To provide a faster response upon re-exposure
What part of an antibody binds to the antigen?✔✔ Variable region
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