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Question #45393
The Question
A neonate exclusively fed on mother's colostrum develops an immediate hypersensitivity reaction (wheezing and erythema) due to trace food allergens present in the milk. Regarding the immunological mechanisms occurring in this scenario, which of the following statements is INCORRECT?
Options
- A.
The colostrum provides natural passive immunity to the neonate primarily through the transfer of secretory IgA.
- B.
The allergic symptoms are mediated by the release of histamine and serotonin from the neonate's mast cells.
- C.
The hypersensitivity reaction is triggered by the trace allergen cross-linking IgE antibodies on the mast cell surface.
- D.
The IgE antibodies responsible for this immediate hypersensitivity were passively transferred from the mother via colostrum.
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Correct Answer
Step-by-Step Solution
Explanation
How the Examiner Thinks
Comparative_Analysis
Sharpen your ability to evaluate multiple scenarios and distinguish between competing potential answers.
Concepts Behind This Question
Colostrum|IgA|Mast_Cells|Histamine
Why This Question Is Tricky
Common Mistakes
Conceptual Pivot: Students often confuse the passive transfer of protective antibodies (IgA/IgG) with the active generation of allergic antibodies (IgE).
The common misconception is that a mother's allergy can be passively transferred via IgE in breast milk, whereas the infant actually produces its own IgE upon exposure to trace allergens acting as vectors in the milk.
Quick Facts About This Question
Question Information
| Subject | Biology |
| Chapter | Human Reproduction - Class 12 |
| Concept | Colostrum vs. Mature Milk |
| Difficulty | 8 |
| Cognitive Load | 5 |
| Target Solve Time | 120 sec |
| Access | Free |