Arrange the steps of an allergic reaction in the proper order.
1) Allergic symptoms appear.
2) The allergen binds with IgE.
3) IgE combines with mast cell receptors.
4) The mast cell releases histamine.
5) Plasma cells are sensitized.
A) 5 → 3 → 2 → 4 → 1
B) 1 → 5 → 2 → 4 → 3
C) 5 → 2 → 4 → 3 → 1
D) 1 → 4 → 5 → 2 → 3
E) 4 → 5 → 2 → 3 → 1

Question

Quizplus · Accepted Answer

The correct sequence for an allergic reaction starts with plasma cells being sensitized (5), which then leads to IgE combining with mast cell receptors (3). Following this, the allergen binds with IgE (2), causing the mast cell to release histamine (4), and finally, allergic symptoms appear (1).

Arrange the Steps of an Allergic Reaction in the Proper