Cards (26)

  • What are the characteristics of Micrococcus?
    • Gram-positive cocci forming pairs and tetrads
    • Catalase positive and coagulase-negative
    • Transient flora on exposed skin
    • Associated with pulmonary infections and bacteremia
  • What infections are Micrococcus associated with?
    Pulmonary infections and septic shock
  • What is the arrangement of Micrococcus bacteria?
    Forming pairs and tetrads
  • What is the catalase and coagulase status of Micrococcus?
    Catalase positive and coagulase-negative
  • Where is Micrococcus commonly found?
    On exposed skin of face, arms, and hands
  • What serious conditions can Micrococcus cause?
    Septic shock and endocarditis
  • What is the genus of the bacteria being discussed?
    Micrococcus
  • What type of bacteria is Micrococcus classified as?
    Gram-positive spherical bacteria
  • Where can Micrococcus typically be found?
    Soil, dust, and human skin
  • What is the domain classification of Micrococcus?
    Bacteria
  • How do Micrococcus bacteria typically arrange themselves?
    In groups of four (tetrads)
  • What is the typical size range of Micrococcus bacteria?
    0.5 to 3.5 micrometers
  • What type of oxygen requirement do Micrococcus bacteria have?
    Obligate aerobes
  • What does it mean that Micrococcus is catalase positive?
    It produces the enzyme catalase
  • What does the enzyme catalase do?
    Breaks down hydrogen peroxide
  • What does it mean that Micrococcus is oxidase positive?
    It produces the enzyme oxidase
  • What is notable about the guanine and cytosine content in Micrococcus?
    Its genome is rich in guanine and cytosine
  • What is a common species of Micrococcus that forms yellow colonies?
    Micrococcus luteus
  • Where is Micrococcus luteus commonly found?
    In milk and dairy products
  • What color colonies does Micrococcus roseus produce?
    Pink colonies
  • Where is Micrococcus roseus commonly found?
    In dust
  • What is the clinical relevance of Micrococcus?
    Generally nonpathogenic, can cause infections
  • In which individuals can Micrococcus cause infections?
    Immunosuppressed individuals
  • How are Micrococcus generally regarded in clinical specimens?
    As contaminants
  • What are the characteristics of Micrococcus bacteria?
    • Gram-positive
    • Spherical shape
    • Arranged in tetrads
    • Obligate aerobes
    • Catalase positive
    • Oxidase positive
    • Rich in guanine and cytosine
  • What is the summary of Micrococcus bacteria's clinical relevance?
    • Generally nonpathogenic
    • Can cause infections in immunosuppressed individuals
    • Often regarded as contaminants in clinical specimens