Which complement component acts mainly as an important opsonin?
Correct answer: C. C3b
- A. C3a
- B. C5a
- C. C3b
- D. C9
Explanation
C3b binds to microbial surfaces and promotes their recognition and phagocytosis by leukocytes. C5a is mainly a powerful chemotactic factor, while C3a contributes chiefly to anaphylatoxin activity.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? support@testustad.com
About Veterinary Pathology
Covers the causes and mechanisms of disease, cellular injury, inflammation, healing, circulatory disturbances, neoplasia and disorders of major organs. It also includes gross and microscopic pathological changes, specimen interpretation and the distinction between aetiology, pathogenesis, clinical signs and lesions.
Practise Veterinary Pathology
60 free Veterinary Pathology MCQs from Veterinary Science, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Veterinary Science questions like this
Veterinary Science is on this paper prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for it.
More Veterinary Pathology questions
Metaplasia is best defined as which type of cellular adaptation?
Dystrophic calcification is most likely to occur in which situation?
Which feature best distinguishes an inflammatory exudate from a transudate?
Type I hypersensitivity in animals is primarily mediated by which immunoglobulin?
Which cell is chiefly responsible for wound contraction?
What is the primary initiating problem in hypovolaemic shock?