BSCS Biology: A Molecular Approach

Chapter 23: Immune Systems

The Immune System in Action

1.
Antibodies bound to antigens can activate the ___ system, a complex group of plasma proteins that can destroy or eliminate antigens.
A)somatic
B)immune
C)destruction
D)complement
2.
____ is a lack of lymphocytic reaction to one's own antigens.
A)autoimmunity
B)complementing
C)tolerance
D)acceptance
3.
The breakdown of one's tolerance, which is a common malfunction of the immune system, produces a condition called ____.
A)immunodeficiency syndrome
B)destruction
C)autoimmunity
D)acceptance
4.
Stress, cortisone, PCP, and HIV all ____ the immune system.
A)accept
B)tolerate
C)assist
D)suppress
5.
The antibodies shown here group the foreign cells together in clumps, making them more easily engulfed by ____.
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A)B-cells
B)phagocytes
C)pathogens
D)T-cells
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