6th Grade Innate Immunity Quizzes , Questions & Answers

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First Line of Defense Immune System: Physical Barriers

This assessment explores the first line of defense in the immune system, focusing on physical and chemical barriers that protect the body from pathogens. Key concepts include the role of skin, mucus, and cilia, as well as the...

Questions: 20 | Attempts: 345 | Last updated: Mar 6, 2026

Sample Question 1
What is the primary job of the first line of defense in the immune system?

To keep pathogens out of the body

To create antibodies

To cause a fever

To produce white blood cells

To digest food

Sample Question 2
The skin is considered the most important physical barrier of the first line of defense.

True

False

Sample Question 3
Which of the following is an example of a chemical barrier in the first line of defense immune system?

Stomach acid

Cilia

Skin

Hair

Fingernails

6th Grade Innate Immunity Quizzes , Questions & Answers

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