Staphylococcus, Streptococcus,Viruses, Gram Negative

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Staphylococcus, Streptococcus,Viruses, Gram Negative - Quiz

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Questions and Answers
  • 1. 

    -Clusters of sperically shaped cell-High salt tolerace-facultative anaerobes-nonmotile-catalase positive (+) Are all characteristics of?

    • A.

      Streptococcus

    • B.

      Staphylococcus

    • C.

      Rotovirus

    • D.

      Influenza

    Correct Answer
    B. Staphylococcus
    Explanation
    Staphylococcus is the correct answer because it exhibits all the characteristics mentioned. Staphylococcus cells are typically arranged in clusters and have a spherical shape. They are known to have high salt tolerance and can survive in both aerobic and anaerobic conditions. Staphylococcus is nonmotile, meaning it does not have the ability to move on its own. It is also catalase positive, which means it produces the enzyme catalase.

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  • 2. 

    Pathogenicity factors for Staphylococcus include

    • A.

      Salt tolerance

    • B.

      Slimy capsule

    • C.

      Slow growth

    • D.

      Flagella

    • E.

      More than one is correct

    Correct Answer
    E. More than one is correct
    Explanation
    The correct answer is "more than one is correct." Staphylococcus, being a pathogenic bacterium, possesses multiple pathogenicity factors that contribute to its ability to cause disease. These factors include salt tolerance, a slimy capsule that helps it evade the immune system, and the ability to grow slowly, which allows it to persist in the host. While Staphylococcus does not have flagella, it possesses other virulence factors that enable its pathogenicity.

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  • 3. 

    The diagnosis of Stapylococcus include all the following except:-fluid sample taken from infected area-urine test-detection of clustered gram (+) cocci-coagulase test used to determine if S. aureus (post) or S. epidermidis (neg)

    • A.

      Fluid sample taken from the infected area

    • B.

      Detection of clustered gram (+) cocci

    • C.

      Urine test

    Correct Answer
    C. Urine test
    Explanation
    The diagnosis of Staphylococcus involves various methods, including fluid sample taken from the infected area and detection of clustered gram (+) cocci. The urine test, however, is not typically used for diagnosing Staphylococcus infections. Instead, it is commonly used to detect urinary tract infections caused by other bacteria or pathogens. Therefore, the urine test is not included in the diagnosis of Staphylococcus.

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  • 4. 

    Which of the following is not a treatment for Stapylococcus?-Cephalosporin-90 to 95% of S. aureus are resistant to penicillin-Methicillin was used, but now MRSA is common-MRSA are usually resistant to several antibiotics-treat with vancomycin-VRSA developing

    • A.

      Treating with vancomycin

    • B.

      Methicillin but now MRSA is common

    • C.

      Cephalosporin

    Correct Answer
    C. Cephalosporin
    Explanation
    Cephalosporin is not a treatment for Staphylococcus because it is mentioned in the question that 90 to 95% of S. aureus strains are resistant to penicillin, and cephalosporin is a type of beta-lactam antibiotic that is structurally similar to penicillin. Since most strains of Staphylococcus are resistant to penicillin, it is likely that they would also be resistant to cephalosporin. Therefore, cephalosporin would not be an effective treatment option for Staphylococcus.

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  • 5. 

    _________ allows Staphylococcus  to get inbetween the cells.

    Correct Answer
    protien A
    hyaluronidase
    a capsule
    Explanation
    Protein A, hyaluronidase, and a capsule all contribute to the ability of Staphylococcus to get in between cells. Protein A is a virulence factor that helps the bacteria evade the immune system. Hyaluronidase is an enzyme that breaks down hyaluronic acid, a component of the extracellular matrix, allowing the bacteria to penetrate tissues. The capsule is a protective layer that helps the bacteria evade phagocytosis by immune cells. Together, these factors enhance the ability of Staphylococcus to invade and cause infection.

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  • 6. 

    Describe pathogenicity factors that allow Staphylococcus to avoid the immune system.

  • 7. 

    Which of the following cause damage to the host regarding Staphylococcus?

    • A.

      Cytolytic, exfoliative, toxic shock, enterotoxins

    • B.

      Pyrogenic, lyses to the cell, coagulation, attaching to smooth surfaces

    • C.

      Reproduction, fimbriae, glycocalyc, cytolytic, exfoliative

    Correct Answer
    A. Cytolytic, exfoliative, toxic shock, enterotoxins
    Explanation
    Staphylococcus can cause damage to the host through the production of cytolytic toxins, which can cause cell lysis and damage to host tissues. Exfoliative toxins produced by Staphylococcus can cause exfoliation of the skin, leading to skin damage. Toxic shock syndrome is caused by the production of toxins by Staphylococcus, which can lead to severe systemic symptoms and organ damage. Enterotoxins produced by Staphylococcus can cause gastrointestinal symptoms and damage to the intestines.

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  • 8. 

    List and describe some diseases caused by Stapylococcus.

  • 9. 

    -chains of sperically shaped cells -no part of normal skin flora-may be a part of normal pharnyx flora-facultative anaerobes-catalase negative-peroxidase positiveAre all characteristics of ?

    • A.

      Staphylococcus

    • B.

      A contagious disease

    • C.

      Streptococcus

    • D.

      More than one answer is correct

    Correct Answer
    C. Streptococcus
    Explanation
    The given characteristics of chains of spherically shaped cells, no part of normal skin flora, may be a part of normal pharynx flora, facultative anaerobes, catalase negative, and peroxidase positive are all consistent with the characteristics of Streptococcus. Streptococcus is a genus of bacteria that commonly forms chains of spherical cells, can be found in the pharynx as part of normal flora, are facultative anaerobes, and possess the mentioned enzymatic properties. Therefore, Streptococcus is the correct answer based on the given characteristics.

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  • 10. 

    The pathogenicity factors for Streptococcus include the following

    • A.

      M protien, hyaloronic capsule, progenic, streptolysins

    • B.

      Endospore production, motile, flagella

    • C.

      Gram negative shape, obligate anaerobe, antibiotic blocker

    Correct Answer
    A. M protien, hyaloronic capsule, progenic, streptolysins
    Explanation
    The correct answer is M protein, hyaluronic capsule, progenic, and streptolysins. These are all pathogenicity factors for Streptococcus. M protein helps the bacteria evade the immune system, hyaluronic capsule protects the bacteria from phagocytosis, progenic enzymes degrade host tissues, and streptolysins are toxins that cause damage to host cells. These factors contribute to the virulence and pathogenicity of Streptococcus.

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  • 11. 

    Describe the diagnosis and treatment for Streptococcus.

  • 12. 

    In reference to the Enteric (gram -) which of the following are characteristics?-members of the animal intestinal microbiota-bacillus (some cocobacillus) shaped-all reduce nitrate to nitrite-all fement glucose anerobically-all are oxidase negative-most are peritrichous-many have capsule

    • A.

      All are oxidase negative

    • B.

      All are peritrichous

    • C.

      All are the above are true

    Correct Answer
    C. All are the above are true
    Explanation
    The given correct answer states that all of the characteristics mentioned in the question are true for Enteric (gram -) bacteria. This means that members of the animal intestinal microbiota, bacillus (some cocobacillus) shaped, all reduce nitrate to nitrite, all ferment glucose anaerobically, all are oxidase negative, most are peritrichous, and many have a capsule.

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  • 13. 

    Describe the pathogenicity and virulence factors used to overcome or evade thier hosts.

  • 14. 

    Are diagonosis for the gram (-) Enterobacteriacae (Enterics).

    Correct Answer
    collect sample of urine, blood, feces or CSF- culture- gram stain- or to use selective and differential media to identify.
    go see the doctor
    no kind of sample is require and it just goes away on its on
    Explanation
    The correct answer is "collect sample of urine, blood, feces or CSF- culture- gram stain- or to use selective and differential media to identify." This is because in order to diagnose the gram (-) Enterobacteriaceae (Enterics), it is necessary to collect samples of urine, blood, feces, or cerebrospinal fluid (CSF) and perform a culture, gram stain, or use selective and differential media to identify the specific bacteria causing the infection. Simply going to see a doctor or assuming it will go away on its own without any sample collection and diagnostic tests would not lead to an accurate diagnosis.

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  • 15. 

    Describe some treatments for treating a gram negative bacteria such as Enterobacteriacae (Enterics).

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  • Current Version
  • Mar 21, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Nov 10, 2010
    Quiz Created by
    Lakadams
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