Recent

  • Show all results for ""

🎧 New: AI-Generated Podcasts Turn your study notes into engaging audio conversations. Learn more

Quiz
66 Questions
2 Views

Quiz

Created by
@MindBlowingJade

Podcast Beta

Play an AI-generated podcast conversation about this lesson

Questions and Answers

Which of the following is a common infection caused by Streptococcus pneumoniae?

  • Urinary tract infection
  • Gastrointestinal infection
  • Skin infection
  • Pneumonia (correct)

    • What is the shape of Streptococcus pneumoniae?

  • Pear-shaped or lanceolate (correct)
  • Spherical
  • Spiral
  • Rod-shaped

    • What is the unique cultural feature of Streptococcus pneumoniae?

  • Is not inhibited by optochin and bile salts
  • Forms beta-hemolysis on blood agar plates (correct)
  • Forms large colonies on blood agar plates
  • Grows in culture medium enriched with organic liquids

    • What is the main factor of virulence of pneumococci?

    <p>Pneumolysin</p> Signup and view all the answers

    What is the function of coagulase in Staphylococcus aureus?

    <p>Converts fibrinogen to fibrin</p> Signup and view all the answers

    What is the characteristic of the mucus in people with cystic fibrosis?

    <p>Thick and sticky</p> Signup and view all the answers

    What is the main morphological characteristic of staphylococci?

    <p>Spherical</p> Signup and view all the answers

    Which toxin is responsible for inducing a potent immune stimulation and causing toxic shock syndrome?

    <p>Shock Syndrome Toxin</p> Signup and view all the answers

    What is the function of Protein A in S. aureus?

    <p>It binds IgG molecules by their Fc region</p> Signup and view all the answers

    Which type of infection is caused by S. aureus growing in the vagina and releasing toxin in the blood?

    <p>Toxic shock syndrome</p> Signup and view all the answers

    What is the difference between the colonies formed by S. aureus and S. epidermis on blood agar plates?

    <p>S. aureus forms golden colonies and S. epidermis forms white colonies</p> Signup and view all the answers

    Which of the following infections can be caused by Streptococcus pneumoniae?

    <p>Meningitis</p> Signup and view all the answers

    What is the shape of Streptococcus pneumoniae?

    <p>Pear-shaped or lanceolate</p> Signup and view all the answers

    What is the unique cultural feature of Streptococcus pneumoniae?

    <p>Forms small colonies on blood agar plates surrounded by a halo of alpha-hemolysis</p> Signup and view all the answers

    Which toxin is responsible for causing scalded skin syndrome in neonates?

    <p>Exfoliative toxin</p> Signup and view all the answers

    What is the function of Protein A in S. aureus?

    <p>Binds IgG molecules by their Fc region</p> Signup and view all the answers

    Which type of infection is caused by S. aureus growing in the vagina and releasing toxin in the blood?

    <p>Toxic shock syndrome</p> Signup and view all the answers

    What is the characteristic of the colonies formed by S. epidermidis on blood agar plates?

    <p>White</p> Signup and view all the answers

    What is the main factor of virulence of Streptococcus pneumoniae?

    <p>IgA Protease</p> Signup and view all the answers

    What is the function of pneumolysin in Streptococcus pneumoniae?

    <p>It acts on ciliated epithelial cells</p> Signup and view all the answers

    Which species of Staphylococcus is coagulase-negative?

    <p>S. epidermis</p> Signup and view all the answers

    What is the main characteristic of the mucus in people with cystic fibrosis?

    <p>It is sticky and thick</p> Signup and view all the answers

    Which type of infections can be caused by Streptococcus pneumoniae?

    <p>Meningitis</p> Signup and view all the answers

    What is the shape of Streptococcus pneumoniae?

    <p>Pear-shaped</p> Signup and view all the answers

    What is the unique cultural feature of Streptococcus pneumoniae?

    <p>Growth inhibited by optochin and bile salts</p> Signup and view all the answers

    Which of the following is a characteristic of the capsule of pneumococci?

    <p>It inhibits complement activity</p> Signup and view all the answers

    Which of the following is a factor that mediates colonization in the oropharynx and subsequent migration to the lungs in pneumococci?

    <p>IgA Protease</p> Signup and view all the answers

    Which of the following is a characteristic of Staphylococcus aureus colonies on solid media?

    <p>Golden-colored</p> Signup and view all the answers

    Which of the following is a characteristic of people with cystic fibrosis?

    <p>They have thick, sticky mucus in their airways</p> Signup and view all the answers

    What is the function of coagulase in Staphylococcus aureus?

    <p>It converts fibrinogen to fibrin, covering the bacterium and protecting it from phagocytosis</p> Signup and view all the answers

    What is the main function of Protein A in S. aureus?

    <p>It binds IgG molecules by their Fc region, disrupting opsonization and phagocytosis</p> Signup and view all the answers

    Which toxin is responsible for causing scalded skin syndrome in neonates?

    <p>Exfoliative toxin</p> Signup and view all the answers

    Where is S. saprophyticus often found and what infections can it cause?

    <p>It is often found in young sexually active women and can cause urinary tract infection with dysuria and pyuria</p> Signup and view all the answers

    Which of the following is a common infection caused by Streptococcus pneumoniae?

    <p>Meningitis</p> Signup and view all the answers

    What is the shape of Streptococcus pneumoniae?

    <p>Pear-shaped</p> Signup and view all the answers

    What is the unique cultural feature of Streptococcus pneumoniae?

    <p>Growth inhibited by bile salts</p> Signup and view all the answers

    Which toxin acts as a superantigen inducing a potent immune stimulation?

    <p>Shock Syndrome Toxin</p> Signup and view all the answers

    Which protein is only present in S. aureus and binds IgG molecules by their Fc region?

    <p>Protein A</p> Signup and view all the answers

    Which enzyme is responsible for the degradation of lipids (sebum) with antimicrobial activity in the skin?

    <p>Lipase</p> Signup and view all the answers

    Which strain of S. aureus is often found in young sexually active women as a cause of urinary tract infection with dysuria and pyuria?

    <p>S. saprophyticus</p> Signup and view all the answers

    Which of the following is a characteristic of Staphylococcus aureus colonies on solid media?

    <p>They are white</p> Signup and view all the answers

    Which factor is responsible for the protection of pneumococci from phagocytosis and inhibition of complement activity?

    <p>Capsule</p> Signup and view all the answers

    What is the main function of coagulase in Staphylococcus aureus?

    <p>It determines the enveloping of fibrinogen around bacterial cell, interfering the phagocytosis</p> Signup and view all the answers

    What is the main morphological change in a patient with meningitis?

    <p>Inflammation of the meninges</p> Signup and view all the answers

    Which of the following is a characteristic of Streptococcus pneumoniae colonies on blood agar plates?

    <p>They form small colonies surrounded by a halo of alpha-hemolysis</p> Signup and view all the answers

    What type of metabolism does Streptococcus pneumoniae use?

    <p>Fermentative metabolism</p> Signup and view all the answers

    What is the main factor responsible for the protection of Streptococcus pneumoniae from phagocytosis and inhibition of complement activity?

    <p>Capsule</p> Signup and view all the answers

    What is the main factor of virulence of pneumococci?

    <p>Capsule</p> Signup and view all the answers

    What is the main function of coagulase in Staphylococcus aureus?

    <p>Converts fibrinogen into fibrin</p> Signup and view all the answers

    Which of the following is a characteristic of people with cystic fibrosis?

    <p>Reduced activity of macrophages</p> Signup and view all the answers

    Which of the following is a common infection caused by Staphylococcus aureus?

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

    What is the function of coagulase in Staphylococcus aureus?

    <p>It converts fibrinogen into fibrin, which covers the bacterium and protects it from phagocytosis.</p> Signup and view all the answers

    What is the function of Protein A in S. aureus?

    <p>It binds IgG molecules by their Fc region, disrupting opsonization and phagocytosis.</p> Signup and view all the answers

    What is the main characteristic of Staphylococcus aureus colonies on solid media?

    <p>They form golden colonies.</p> Signup and view all the answers

    What type of infection is caused by S. saprophyticus and where is it often found?

    <p>Urinary tract infections in young sexually active women.</p> Signup and view all the answers

    Which type of infections can be caused by Streptococcus pneumoniae?

    <p>Both forms at the level of the upper respiratory tract and serious and invasive forms such as pneumonia, meningitis and sepsis</p> Signup and view all the answers

    What is the unique cultural feature of Streptococcus pneumoniae?

    <p>Optochin and bile salts sensitivity</p> Signup and view all the answers

    What is the main site of residence of Streptococcus pneumoniae?

    <p>Upper respiratory tract</p> Signup and view all the answers

    What is the function of Protein A in Staphylococcus aureus?

    <p>It binds IgG molecules by their Fab region.</p> Signup and view all the answers

    Which toxin is responsible for inducing a potent immune stimulation in Staphylococcus aureus?

    <p>Superantigens</p> Signup and view all the answers

    What is the characteristic of Staphylococcus epidermidis colonies on solid media?

    <p>White colonies</p> Signup and view all the answers

    Which strain of Staphylococcus is often found in young sexually active women as a cause of urinary tract infection with dysuria and pyuria?

    <p>S. saprophyticus</p> Signup and view all the answers

    Which of the following is a characteristic of people with cystic fibrosis?

    <p>They have reduced activity of macrophages.</p> Signup and view all the answers

    What is the function of pneumolysin in Streptococcus pneumoniae?

    <p>It creates pores in cholesterol-containing membranes.</p> Signup and view all the answers

    What is the main function of coagulase in Staphylococcus aureus?

    <p>It determines the enveloping of fibrinogen around bacterial cell.</p> Signup and view all the answers

    What is the unique cultural feature of Streptococcus pneumoniae?

    <p>It produces golden-colored colonies on solid media.</p> Signup and view all the answers

    More Quizzes Like This

    Quiz sur les infections
    36 questions

    Quiz sur les infections

    CelebratedUvite avatar
    CelebratedUvite
    S. pneumonia Characteristics Quiz
    10 questions

    S. pneumonia Characteristics Quiz

    RapidVampire avatar
    RapidVampire
    Clostridium perfringens: Characteristics and Toxinogenic Types
    5 questions

    Clostridium perfringens: Characteristics and Toxinogenic Types

    TrustingStatistics avatar
    TrustingStatistics
    Group B Streptococcus (GBS) Characteristics
    10 questions

    Group B Streptococcus (GBS) Characteristics

    GraciousTechnetium avatar
    GraciousTechnetium
    Use Quizgecko on...
    Browser
    Open
    Browser
    Browser