Diseases and Immunity Quiz Quiz

10 multiple choice questions

1. What is the correct definition of pathogens?

A) Always harmful B) Microorganisms that can cause disease C) Types of antibiotics D) Always visible to the naked eye

2. Which type of microorganism can reproduce independently and is found almost everywhere on Earth?

A) Viruses B) Bacteria C) Fungi D) All microorganisms

3. What are the body's first lines of defense against pathogens called?

A) Antibiotics B) Skin and mucous membranes C) Vaccines D) White blood cells only

4. Which blood cells are responsible for producing antibodies to fight infections?

A) Platelets B) Phagocytes C) Red blood cells D) Plasma cells

5. What is the main function of vaccines in preventing disease?

A) Killing bacteria directly B) Training the immune system to recognize pathogens C) Providing immediate antibiotics D) Destroying viruses instantly

6. What does the immune system's memory of past infections allow the body to do?

A) Forget past infections B) Respond faster to previously encountered pathogens C) Prevent all infections D) Produce only antibiotics

7. Which type of blood cell plays a crucial role in coordinating the body's immune response to infections?

A) Red blood cells B) Helper T cells (CD4 cells) C) Platelets D) Bone marrow

8. What is an antigen in the context of the immune system?

A) A part of a pathogen that triggers an immune response B) A type of white blood cell C) A medicine that kills bacteria D) A component of blood plasma

9. What happens when a person's immune system overreacts to harmless substances like pollen or dust?

A) Is too weak B) Overreacts to harmless substances C) Cannot recognize pathogens D) Produces too few antibodies

10. What does active immunity refer to in terms of how the body gains protection against diseases?

A) You receive antibodies from another person B) Your body makes antibodies after exposure to a pathogen or vaccine C) You take antibiotics D) You are born with it

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