Differentiation of staphylococcal species
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- Q1Which of the following is a characteristic of Staphylococcus hominis?Produces urease enzymeProduces lactase enzymeProduces catalase enzymeProduces coagulase enzyme30s
- Q2
Which one is general characteristics of Clostridium botulinum?
//Spores of C. botulinum is widely distributed in soil, they often contaminate vegetables, fruits and other materials.multiplemProduce a neurotoxin which is the most active known poison and considered to be the major agent of bioterrorism and biologic warfare.There are seven serotypes(A-G) of which A,B and E are the principal causes of human illness.All of the above30s - Q3Which of the following is a characteristic of Staphylococcus haemolyticus?
Produces exfoliative toxin
Produces alpha-hemolysisProduces gamma-hemolysisProduces coagulase enzyme30s - Q4Which of the following is a characteristic of Staphylococcus aureus?
Produces catalase enzyme
Produces urease enzymeProduces lactase enzymeProduces coagulase enzyme30s - Q5
Following are characteristics of STREPTOCOCCI except?
They are non-motile, non-sporulating, gram- positive facultative anaerobes.
They are aerobic bacteria in which growth is enhanced with 10% carbon dioxide.
They are found in hair-like projections of the streptococcal surface and determine virulence.
They are heterogeneous group of bacteria, and no one system suffices to classify them.
30s - Q6Which of the following is a characteristic of Methicillin-resistant Staphylococcus aureus (MRSA)?Resistant to beta-lactam antibioticsProduces exfoliative toxinProduces biofilmProduces coagulase enzyme30s
- Q7
There are more than 80 serotypes of the bacteria based on capsular typing.
truefalseTrue or False30s - Q8Which of the following is a characteristic of Staphylococcus saprophyticus?
Causes skin infections.
Causes urinary tract infections.Causes pneumoniaCauses food poisoning30s - Q9
Which one is the general characteristics of Clostridium difficile?
All the answers are correct.
Not frequently found in the healthy adult but is found often in the hospital environment.
Capsulated, non-motile, short gram-positive rods in which spores are hardly seen.
Human disease is caused by C. perfringens type A and C Pathogenicity determinant.
30s - Q10Which of the following is a characteristic of Staphylococcus lugdunensis?
Produces beta-lactamase enzyme.
Produces coagulase enzymeProduces exfoliative toxinProduces delta-hemolysis.30s - Q11Which of the following is a characteristic of Staphylococcus epidermidis?Produces biofilmProduces exfoliative toxinProduces coagulase enzymeProduces beta-hemolysis30s
- Q12
Capsule: Polypeptide of D-glutamic acid: Enables the organism to evade phagocytosis
falsetrueTrue or False30s - Q13
................................is an active proteolytic enzyme which lyses fibrin by catalytic conversion of plasminogen to plasmin.
Streptokinase: Fibrinolysin.
Streptodornase: Streptococcal deoxyribonuclease
Erythrogenic toxin: Pyrogenic exotoxins
Hyaluronidase
30s - Q14
What causes secretory diarrhea due to release of enterotoxin in the intestine?
Clostridial myonecrosis
Clostridial food poisoning
Blood agar medium
Biochemical reaction
30s - Q15
What are characteristics of Clostridium perfringens?
Human disease is caused by C. perfringens type A and C Pathogenicity determinant\//Capsulated, non-motile, short gram-positive rods in which spores are hardly seen.A-EmultiplemAll of the abovethere are five toxigenic groups\30s