| 1. What are the two types of immunity? |
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| 2. What is the purpose of the immune system? |
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| 3. What are the three main components of the immune system? |
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| 4. What are the two types of lymphocytes? |
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| 5. What is the role of antibodies in the immune system? |
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| 6. What is the difference between active and passive immunity? |
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| 7. What is the difference between innate and adaptive immunity? |
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| 8. What are the most common types of infections that the immune system defends against? |
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| 9. How do antigens trigger an immune response? |
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| 10. How does the immune system recognize foreign substances? |
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