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level: COLONIES

Questions and Answers List

level questions: COLONIES

Question	Answer
Blood agar: Beta hemolytic, pinhead shape with white to golden yellow color, creamy in texture	Staphylococcus aureus
Blood agar: 1 Gamma hemolytic 2 colonies appear brown and sometimes white	Staphylococcus epidermidis
Blood agar: 1 White gamma hemolytic colonies 2 White color and no lysis	Staphylococcus saprophyticus
Blood Agar: 1 beta-hemolytic colonies 2 Pinpoint, flat and gray colony	Streptococcus pyogenes
Blood agar: 1 Beta-hemolytic colonies on blood agar 2 They appear as pinpoint clear colonies	Streptococcus agalactiae
Blood agar: Beta hemolytic colonies	1 Streptococcus equisimilis 2 Enterococcus faecalis 3 Clostridium tetani 4 Clostridium botulinum
Blood agar: Alpha or gamma hemolytic colonies	Streptococcus equinus and Streptococcus bovis
Blood agar: 1 Alpha hemolytic colonies 2 produce a green coloration	Streptococcus mutans and Streptococcus constellatus
Blood agar: 1 Alpha hemolytic 2 small, round, glistening, dome shaped and “nail or checker head” in appearance	Streptococcus pneumoniae
Blood agar: No growth Grows in chocolate agar at 37 degC On MTM or NYC agar at 35-degree C with 5 to 10% carbon dioxide with the use of JEMBEC plate or candle jar:	Neisseria gonorrhoeae
On MTM or NYC agar: Gray to white colonies Grows on: -Chocolate agar -MTM or NYC agar at 35-37 degC -JEMBC plate or candle jar	Neisseria meningitidis
Blood agar: Medusa heat colonies Non hemolytic PLET Medium: Beaten egg white consistency of colonies	Bacillus anthracis
Classified as Group A beta hemolytic streptococcus.	Streptococcus pyogenes
Classified as Group B beta hemolytic streptococcus.	Streptococcus agalactiae
Classified as group C beta hemolytic streptococcus	Streptococcus equisimilis
Classified as Group B alpha or gamma hemolytic non enterococcus	Streptococcus equinus and Streptococcus bovis
formally belonged to enterococcus group B	Enterococcus faecalis and Enterococcus durans
they are large groups of commensals streptococcal bacterial species	Streptococcus mutans and Streptococcus constellatus (THEY ARE KNOWN AS VIRIDANS)
Blood agar: Beta hemolytic purple colonies	Bacillus cereus
Tinsdale medium, potassium tellurite medium and McLeod medium: Gray to black colonies	Corynebacterium diptheriae “Klebs Loeffler Bacillus”
umbrella-like growth in semi-solid agar.	Listeria monocytogenes
Gelatin stab: Brush like growth	Erypsipelothrix rhusiopathiae
Blood agar: Double zone or target hemolysis	Clostridium perfringens