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WorksheetsMicrobiology Quiz: Streptococcus Identification
Total questions: 10
Worksheet time: 5mins
What is the aim of the Catalase activity test?
To determine the type of RBCs hemolysis
To distinguish Streptococcus pneumoniae from other alpha-hemolytic streptococci
To determine the ability of microorganisms to produce catalase enzyme
To identify the species responsible for strep throat
Which Streptococcus species is responsible for strep throat?
S. pneumoniae
S. pyogens
S. viridans
S. faecalis
What is the principle of the Bile solubility test?
S. pneumoniae is inhibited by optochin
To distinguish Streptococcus pyogenes from other beta-hemolytic streptococci
Bile salts cause lysis of sensitive bacteria
To determine the type of RBCs hemolysis
What is the aim of the Optochin blood test?
To determine the ability of microorganisms to produce catalase enzyme
To distinguish Streptococcus pneumoniae from other alpha-hemolytic streptococci
To determine the type of RBCs hemolysis
To identify the species responsible for strep throat
What is the result of the Bacitracin test for Streptococcus pyogenes?
Bile soluble
Inhibited by optochin
Sensitive
Resistant
What is the major clinical significance of Streptococcus?
Throat infection
Necrotizing fasciitis
Cellulitis
Pink eye
What is the result of the Catalase activity test for Streptococcus?
Effervescent
No effervescent
Green hemolysis
Partial hemolysis
What is the principle of the Quellung test?
To determine the type of RBCs hemolysis
Bile salts cause lysis of sensitive bacteria
Capsular swelling test for S. pneumonia
To distinguish Streptococcus pyogenes from other beta-hemolytic streptococci
What is the result of the Culture on blood agar for S. faecalis?
Complete RBCs lysis
Partial hemolysis
No hemolysis
Hb → met-Hb
What is the type of medium used in the Chocolate Agar test?
Enriched medium
Solid medium
Differential medium
Selective medium
