Name __________________________
HUMAN BIOLOGY II HOMEWORK #5
The Immune System
Due Tuesday, October 26

For a review of blood and the circulatory system, watch Path of a Red Blood Cell (link on blog).

Go to the Exploratorium’s Microscope Imaging Station (link on the blog).

On the home page, click on the red blood cells, then on the link to Blood: The Body’s Vital Defense Force. Play
the video: A Scientist’s View: what’s so interesting about blood?
Answer these questions, based on the video:
1. What do granulocytes (white blood cells) do to bacteria?
2. Why did the granulocytes not eat the red blood cells?
3. The granulocytes die after eating the bacteria. What eats the granulocytes?
4. How is that cell UNLIKE a granulocyte?
5. Why does a tattoo last for a lifetime?
6. Watch Neutrophil Chase (link on blog) – these were the most common white blood cells you saw today under the
microscope. To prove you watched the video, draw a picture of the neutrophil featured in the video, and label what it
was chasing.
7. Read the entire article Blood: The body’s vital defense force. This handout is the same information that is on the
Exploratorium website. Use three different colored highlighters or colored pencils. Underline or highlight the following
information with its own color: 1) information about our innate (“born with”) immunity; 2) information about our
acquired immunity; and 3) information about allergies. You should be prepared to discuss this information tomorrow in
class.