Practice understanding the main parts of the immune system and how they help protect the body from disease.
Read each problem carefully. Answer in complete sentences and use evidence from what you know about the immune system.
How the body defends itself from germs
Biology - Grade 6-8
- 1
What is the main job of the immune system in the human body?
- 2
Name two types of germs that can make people sick, and explain how they are different.
- 3
How does the skin help the immune system defend the body?
- 4
What role do white blood cells play in the immune system?
- 5
Explain what inflammation is and why it can be helpful when you get a cut.
- 6
What is a pathogen, and how is it related to disease?
- 7
Describe how antibodies help the body fight infection.
- 8
Why do vaccines help protect people from some diseases?
- 9
A student says, "Antibiotics can cure the flu because the flu is caused by bacteria." Explain what is wrong with this statement.
- 10
How do fever and mucus help the body defend itself during illness?
- 11
Compare innate immunity and adaptive immunity in one or two sentences.
- 12
List two healthy habits that help keep the immune system working well, and explain why each habit matters.