After having cereal and nut mix for breakfast, your friend realizes that the mix contains a nut to which she is allergic. Soon afterward, symptoms of an allergic reaction start to appear, and she is going to take an antihistamine pill to alleviate them. During the allergic reaction in her body, …
A) mast cells synthesize and secrete IgE antibodies into the blood.
B) the allergen molecules bind to IgE antibodies that are bound to Fc receptors on the surface of basophils and mast cells.
C) histamine and other amines are recognized by IgE antibodies.
D) histamine binds to mast cells and induces IgE production.
E) All of the above.

Question

Quizplus · Accepted Answer

IgE antibodies bind to Fc receptors on the surface of mast cells and basophils with high affinity and thereby act as allergen receptors on these cells. Binding of the allergen causes the cells to release histamine, which causes most of the symptoms of the allergic reaction.

After Having Cereal and Nut Mix for Breakfast, Your Friend