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BI 234 GRAM (+) BACTERIA EXAM QUESTIONS AND ANSWERS VERIFIED GRADED A+ LATEST UPDATE $10.99   Add to cart

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BI 234 GRAM (+) BACTERIA EXAM QUESTIONS AND ANSWERS VERIFIED GRADED A+ LATEST UPDATE

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BI 234 GRAM (+) BACTERIA EXAM QUESTIONS AND ANSWERS VERIFIED GRADED A+ LATEST UPDATE Staphylococcus Gram (+) O2 requirement: facultative anaerobes cell shape/arrangement: cocci (graph like clusters) virulence factors: virulent, exotoxins Staphylococcus aureus Gram (+) disease: 1) food po...

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  • November 9, 2024
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BI 234 GRAM (+) BACTERIA EXAM QUESTIONS AND ANSWERS

VERIFIED GRADED A+ LATEST UPDATE


Staphylococcus

Gram (+)

O2 requirement: facultative anaerobes

cell shape/arrangement: cocci (graph like clusters)

virulence factors: virulent, exotoxins

Staphylococcus aureus

Gram (+)

disease: 1) food poisoning 4 hrs onset, enterotoxin- heat stable, 2) scalded skin-

exfoliative toxin, 3)impetigo- honey colored crust pus filled vesicles on face,

4) foliculitis (hair follicles) sty, boil (furuncle), carbuncle (sev.

furuncles), Staphylococcal toxic shock syndrome: fever, vomit, rash, and BP down

common treatment: methicillin, vancomycin, handwashing

mode of transmission: naturally occurring in the nasal passages,

Staphylococcus epidermidis

*normal microbiota

*opportunistic

Streptococcus

Gram (+)

O2 Requirement: facultative anaerobes

, cell morphology/arrangement: cocci in pairs or chains

Lancefield groups A and B include the significant human pathogens

Streptococcus pyogenes (Group A)

Gram (+)

Beta hemolysis

Catalase (-) Negative

pyrogenic toxins

cocci

diseases: strep throat (pharyngitis- pyrogenic toxins cause rash all over the body),

scarlet fever, rheumatic fever, pyoderma (pus-filled lesions), erysicelas

(infected/inflammed lymph nodes), strep TSS (40% mortality, necrotizing fasciiitis, flesh

eating, toxemia

common treatments:

modes of transmission:

Streptococcus agalactiae (Group B)

Gram (+)

Disease: wounds and childbirth (puerperal fever), babies can get meningitis,

bacteremia, and pneumonia

common treatments: prophylactic use of penicillin during childbirth reduces newborn

infections

modes of transmission: part of normal flora; babies at risk during childbirth if mothers

is positive

Alpha hemolytic Streptococci

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