The single most important laboratory test for determining the virulence of staphylococci is___________?
Correct answer: C. Detection of coagulase
- A. Mannitol fermentation
- B. Hemolysis of sheep erythrocytes
- C. Detection of coagulase
- D. The catalase test
Explanation
Coagulase converts fibrinogen to fibrin and helps Staphylococcus aureus form a protective clot, making coagulase the key laboratory marker associated with staphylococcal virulence. Catalase distinguishes staphylococci from streptococci but does not specifically indicate virulence.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? support@testustad.com
Practise Bacteriology
167 free Bacteriology MCQs from Microbiology, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Microbiology questions like this
Microbiology is on 3 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Bacteriology questions
Which of the following have the capability to produce extra cellular polysaccharides______________?
Granules in the corynebacterium diphtheria are called by following names, except______________?
Widal test is specific for____________?
Salmonella typhi can be isolated at different times from______________?
The temperature required for cultivating mycobacterium________________?
Silver impregnation method of staining is useful to demonstrate_____________?