Question:
Which of the following complement components are larger fragments:
A. C3a B. C3b C. C2a D. C2b
Which of the following complement components are larger fragments:
A. C3a B. C3b C. C2a D. C2b
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Convention rule: âb' is Big, âa' is away. Exception: C2a is the big one.
Updated On: May 28, 2026
- A and D Only
- B and C Only
- A and C Only
- A and B Only
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Verified By Collegedunia
The Correct Option is B
Solution and Explanation
Step 1--3: Analysis
Convention: âbâ fragment is larger and stays on the surface; âaâ is smaller and acts as an inflammatory mediator. For C3, C3b is larger. C2 is the exception: C2a is the larger fragment that stays in the complex; C2b is smaller.
Step 4: Conclusion
The larger fragments are C3b and C2a.
Final Answer: (B)
Convention: âbâ fragment is larger and stays on the surface; âaâ is smaller and acts as an inflammatory mediator. For C3, C3b is larger. C2 is the exception: C2a is the larger fragment that stays in the complex; C2b is smaller.
Step 4: Conclusion
The larger fragments are C3b and C2a.
Final Answer: (B)
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