On occasion the immune response in inappropriate;for example,an allergy occurs when the immune system
A) initiates a response to a substance that is not actually pathogenic.
B) misinterprets normal body cells for pathogenic ones and mounts an immune response against those tissues.
C) ignores a pathogen,like a parasitic worm,and permits it to reside and reproduce within the body.
D) suffers a genetic defect that disables or accentuates certain elements,resulting in either too little or too much response.

Question

Quizplus · Accepted Answer

An allergy occurs when the immune system initiates a response to a substance that is not actually pathogenic. This can range from mild reactions like hay fever to severe reactions like anaphylaxis.

Answer: B
 Autoimmune diseases occur when the immune system misinterprets normal body cells for pathogenic ones and mounts an immune response against those tissues. Examples include rheumatoid arthritis, lupus, and multiple sclerosis.

Answer: D
 Genetic defects can cause the immune system to either not respond enough or overreact. For example, people with primary immunodeficiency diseases have weakened immune systems, while those with autoimmune polyendocrine syndrome (APS) suffer from excessive immune responses that lead to multiple autoimmune diseases.

On Occasion the Immune Response in Inappropriate;for Example,an Allergy Occurs