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A boy of ten years had chicken-pox.He is...

A boy of ten years had chicken-pox.He is not expected to have the same disease for the rest of his life.Mention how it is possible?

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The infection produces not only antibodies but also generates memory B and T cells.These cells recognize the pathogen in the subsequent attacks and produce antibodies to neutralize the pathogen,so the boy will not fet the disease for the rest of his life.
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OSWAAL PUBLICATION-HUMAN HEALTH AND DISEASES-TOPIC-1(Short answer type questions-I)
  1. What is non-specific body defence?Name any two surface barriers.

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  2. Differentiate innate and acquired immuity.

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  3. differentiate between active immuntiy and passive immuntiy.

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  4. Name the primary and secondary lymphoid organs.

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  5. What would happen to immune system ,if thymus gland is removed from th...

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  6. Many microbial pathogens enter the gut of humans along with food.What ...

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  7. What are interferons?How do interferons check infection of new cells?

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  8. Write the role of macrophages in providing immunity to humans.

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  9. Name the causative organism and symptoms of common cold?

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  10. Define disease and mention its types.

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  11. What is the role of histamine in inflammatory response?Name few drugs ...

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  12. Define auto-immune diseases.Give two examples.

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  13. Name and explain the type of barrier of innate immunity system,which i...

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  14. A boy of ten years had chicken-pox.He is not expected to have the same...

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  15. What is it that prevents a child to suffer from a disease he/she is va...

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  16. Define the term health.Mention any two ways of maintaining it.

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  17. Why does a doctor administer tetanus antitoxin and not a tetanus vacci...

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  18. Describe the role of lymph nodes in providing immunity.

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  19. Why is an antibody represented as H(2)L(2)?

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  20. Expand AMIS and CMIS?

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