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What is the function of memory cells in the immune system?

Practice Questions

Q1
What is the function of memory cells in the immune system?
  1. To produce immediate immune responses
  2. To remember past infections and respond quickly upon re-exposure
  3. To activate macrophages
  4. To secrete cytokines

Questions & Step-by-Step Solutions

What is the function of memory cells in the immune system?
  • Step 1: Understand that the immune system protects the body from infections.
  • Step 2: Learn that when the body encounters a pathogen (like a virus or bacteria), it creates special cells to fight it.
  • Step 3: Know that some of these cells become memory cells after the infection is cleared.
  • Step 4: Realize that memory cells stay in the body for a long time, sometimes for years.
  • Step 5: When the same pathogen tries to infect the body again, memory cells recognize it quickly.
  • Step 6: Because of this recognition, the immune system can respond faster and more effectively to fight off the infection.
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