Answered



A 6-year-old child ate a peanut butter sandwich

at snack time in school. Five minutes later, her

throat became swollen and she collapsed. This

allergic reaction occurred because her body

(1) recognized an antigen in peanut butter and

produced antibiotics against it

(2) digested the white blood cells that can

recognize an antigen in peanut butter

(3) did not recognize an antigen in peanut

butter and could not produce antibodies

against it

(4) recognized an antigen in peanut butter and

produced an immune response

Verified Answer :

the answer is 3. did not recognize an antigen in peanut butter and could not produce antibiotics against it.

kimeto3

(4) recognized an antigen in peanut butter and produced an immune response.
Allergies occur when the body recognizes an antigen called allergen and reacts abnormally to it by producing immune responses which are usually inflammatory. This response is considered abnormal because the allergens are in other respects harmless to the body.

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