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