COPY: Gram-positive Cocci Chapter Content

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Questions and Answers

What is the most common cause of hospital-acquired pneumonia?

  • Streptococcus
  • Streptococcus pneumoniae
  • Cellulitis
  • Methicillin-resistant S. aureus (MRSA) (correct)

Which bacterium is known for causing skin abscesses in the United States?

  • Methicillin-resistant S. aureus (MRSA) (correct)
  • Impetigo
  • Streptococcus pneumoniae
  • Streptococcus

What is an important cause of bacterial conjunctivitis?

  • Folliculitis
  • Streptococcus
  • Surgical-wound infections
  • Methicillin-resistant S. aureus (MRSA) (correct)

Which bacterium is responsible for necrotizing fasciitis?

<p>Methicillin-resistant S. aureus (MRSA) (C)</p> Signup and view all the answers

Which statement about staphylococci and streptococci is true?

<p>Streptococci not produce catalase. (B)</p> Signup and view all the answers

What characterizes staphylococci in terms of arrangement?

<p>Irregular grapelike clusters (B)</p> Signup and view all the answers

Which of the following is a key difference between staphylococci and streptococci?

<p>Streptococci form grapelike clusters while staphylococci are in chains. (B)</p> Signup and view all the answers

Which type of infections can Staphylococcus aureus cause?

<p>Skin infections (A)</p> Signup and view all the answers

What is the main biochemical difference between staphylococci and streptococci?

<p>Streptococci not produce catalase while staphylococci produced. (A)</p> Signup and view all the answers

Which of the following diseases can be caused by Staphylococcus aureus?

<p>Endocarditis (A)</p> Signup and view all the answers

In what manner do staphylococci appear microscopically?

<p>In grapelike clusters (B)</p> Signup and view all the answers

Which of the following best describes staphylococci and streptococci?

<p>Both are gram-positive cocci. (B)</p> Signup and view all the answers

Flashcards

What is MRSA?

A common cause of hospital-acquired pneumonia, resistant to many antibiotics.

What causes skin abscesses?

A bacterium known for causing skin abscesses in the United States.

What causes pink eye?

Causes of bacterial conjunctivitis (pink eye).

What is necrotizing fasciitis caused by?

A bacterium responsible for causing necrotizing fasciitis (flesh-eating disease).

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Staphylococci vs. Streptococci arrangement?

Staphylococci form irregular grapelike clusters, while streptococci do not.

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What infections does Staphylococcus aureus cause?

Staphylococcus aureus can cause skin infections such as boils, cellulitis, and impetigo.

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Staphylococci vs. Streptococci catalase production?

Staphylococci produce catalase, while streptococci do not.

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What is endocarditis?

Staphylococcus aureus can cause endocarditis, an infection of the inner lining of the heart.

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Staphylococci and streptococci are?

Both staphylococci and streptococci are gram-positive cocci.

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Study Notes

Staphylococci and Streptococci

  • The most common cause of hospital-acquired pneumonia is Staphylococcus aureus.
  • Staphylococcus aureus is known for causing skin abscesses in the United States.
  • Haemophilus influenzae is an important cause of bacterial conjunctivitis.
  • Streptococcus pyogenes is responsible for necrotizing fasciitis.
  • A true statement about staphylococci and streptococci is that they are both catalase-positive, whereas streptococci are catalase-negative.
  • Staphylococci are characterized by a clustered arrangement.
  • A key difference between staphylococci and streptococci is that staphylococci are Gram-positive, non-motile, and non-sporulating, whereas streptococci are Gram-positive, non-motile, and non-sporulating.
  • Staphylococcus aureus can cause a range of infections, including skin and soft tissue infections, pneumonia, endocarditis, and sepsis.
  • The main biochemical difference between staphylococci and streptococci is that staphylococci produce catalase, whereas streptococci do not.
  • Staphylococcus aureus can cause a range of diseases, including pneumonia, endocarditis, sepsis, and skin and soft tissue infections.
  • Microscopically, staphylococci appear in clusters.
  • Staphylococci and streptococci are both Gram-positive, non-motile, and non-sporulating bacteria.

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