Question

question 51
an exaggerated attack on a harmless antigen by an overly sensitive immune system is termed a(an):
a innate defense stimulator
b autoimmune disease
c allergy
d secondary immune response
e primary immune response

Explanation:

To solve this, we analyze each option:

• Option A: Innate defense stimulator is not related to an exaggerated immune response to a harmless antigen.
• Option B: Autoimmune disease is when the immune system attacks the body's own cells, not harmless antigens.
• Option C: Allergy is defined as an exaggerated immune response to a harmless antigen (allergen) by an overly sensitive immune system. This matches the description.
• Option D: Secondary immune response is a stronger response to a previously encountered antigen, not an exaggerated response to a harmless one.
• Option E: Primary immune response is the initial response to an antigen, not an exaggerated response to a harmless antigen.

Answer:

C. Allergy