Biology Practice: Allergy (Mock Test 4 - Expert)
1. In a clinical case, a patient develops a rash every time they use a specific brand of laundry detergent. This is an example of:
2. Why does the body's blood pressure drop dangerously during Anaphylactic shock?
3. A student is highly allergic to pollen but only in the city, not in the countryside. What could be the environmental reason?
4. Expert Logic: Why are antihistamines ineffective if an anaphylactic reaction has already progressed to airway obstruction?
5. Experimental Observation: In a skin prick test, a 'Control' (usually saline) is used alongside allergens. Why?
6. If a person is allergic to "Animal Dander," what are they actually reacting to?
7. A patient shows 'Cross-reactivity' by being allergic to both Ragweed pollen and Bananas. This happens because:
8. What is the metabolic consequence of 'Mast Cell Degranulation'?
9. Why is a 'Patch Test' used for 48 hours instead of a quick skin prick for certain rashes?
10. In a 'Urine Analysis' or Blood test for allergies, doctors look for high levels of which cell?
11. Why do people with asthma find it harder to 'exhale' than to 'inhale' during an attack?
12. What is the role of the 'Basement Membrane' in allergic skin reactions?
13. In the case of an 'Insect Sting' allergy, why does the second sting often cause a much worse reaction than the first?
14. What is the specific role of 'IgE' compared to other antibodies?
15. Why is 'Occupational Asthma' common in bakery workers?
16. What is the fundamental difference between 'Immediate' and 'Delayed' hypersensitivity?
17. In a 'RAST' blood test, what is the lab technician measuring?
18. Why do doctors advise against 'carpeted floors' for children with severe asthma?
19. What makes the 'Air sacs' (alveoli) difficult to clear during an allergic respiratory reaction?
20. What is the biological reason some people 'outgrow' their allergies as they get older?
