Immune System Basics
An introductory worksheet on the human immune system for 8th-grade science students.
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Immune System Basics
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Date:
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Read each question carefully and answer to the best of your ability.
1. Which of the following is NOT a primary function of the immune system?
Fighting off infections
Digesting food
Protecting the body from harmful substances
Recognizing and destroying abnormal cells
2. Which type of white blood cell is responsible for producing antibodies?
Phagocytes
T-cells
B-cells
Natural Killer cells
3. The body's first line of defense against pathogens includes skin, mucous membranes, and .
4. A substance that triggers an immune response is called an .
5. When your body creates its own antibodies after being exposed to a pathogen, it is called immunity.
6. Vaccines work by introducing a weakened or inactive form of a pathogen into the body.
True
False
7. All bacteria are harmful and cause diseases.
True
False
8. Briefly explain the difference between innate immunity and adaptive immunity.
9. Name two common types of pathogens that the immune system protects against.