Task:2 Directions: Use the word bank below to complete the following sentences.

Antibody Antigens Illness/Death Immune Pathogen White Blood Cells

1. The system identifies and defends the body against pathogens.

2. If an organism fails to maintain homeostasis, it will most likely cause
3. Microbes that enter the body, causing disease, are known as
4. Certain microbes can cause immune responses in the human body because their cell membranes contain , which serve as identification tags.
5. are responsible for attacking microbes that enter the body.
6. are specifically shaped proteins made by white blood cells.