Chapter 31:  The Body’s Defense System (Worksheet # 2)
Instructor: Mr. Buckley

Complete the reading in your Biology: Exploring Life by Campbell et. Al.
(the newest textbook) to answer the following questions.   This reading is from
Concept 31.3 pp. 682-686

Answers not written using complete sentences to these questions will not be accepted.
This assignment will count as two homework scores.

1.         What is immunity?
2.         What is an antigen?

3.         List four examples of antigens.

4.         What are antibodies?
5.         Describe the shape of the most common antibodies.  
6.         How does the shape of an antibody make it possible to recognize
            a complementary shape on an antigen?
7.         What kind of white blood cells recognize specific body invaders?
8.         Where do lymphocytes originate in the body?

9.         Describe the difference in the maturation process between T-cell and
            B- cell lymphocytes.
10/11.  Explain the role of B-cells and T-cells in the immune response.

12/13.  Explain why T-cells might protect against cancer.  Why are people with
            weakened immune systems possibly more likely to get cancer?
14.       What are memory cells?
15/16.  Explain the difference between the primary and secondary immune responses.