Quiz: Specific Defense (The Immune System)

1. The defense system that recognizes precise foreign antigens is the body's __________ line of defense.
a. first
b. second
c. third
2. The production of antibodies is the body's __________ line of defense.
a. first
b. second
c. third
3. The activity of antigens and antibodies are involved in __________ defense.
a. specific
b. nonspecific
c. nonspecific barrier
4. There are molecules on the surface of cells that provide identity for the cells. The body either recognizes these cells as “self” or “nonself.” Which of the follow are molecules that are NOT involved in cell identity?
a. antigens
b. antibodies
c. major histocompatibility complex

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