Gram Positive Cocci (Staphelococci)

Question 1

Catalase test used to differentiate between??

Answer 1

Staphylococcus and streptococcus

Question 2

The most virulence species of staphylococcus is?

Answer 2

Staph .aureus

Question 3

Staph .aureus cussing pink colones on???

Answer 3

Macconkey agar. Lactose fermentation

Question 3

Staph.aureus give yellow color on media?

Answer 3

Cultivation of staph. aureus on mannitol salt agar resolute in fermentation of phenol red to yellow

Question 4

Staph.aureus on solid media (nutrients )agar give !

Answer 4

Gray to golden yellow colonies

Question 5

Staphylococcus bacteria it’s the commonest cuss of ! Hospital acquired infractions and nosocomial information(true ✅or false❌)

Answer 5

True ✅

Question 6

Staph.aureus morphology?

Answer 6

• gram positive cocci
• grape like cluster
• non motile
• non sporing

Question 7

Cluster characters of staph .aureus?

Answer 7

• Facultative anaerobic
• Grow on
  1- nutrient agar .give golden yellow colonies
  2- blood agar.beta hemolytic colonies
  3- coagulase and catalase (positive)