Mcro 251 Final Exam Questions With
Verified Answers
Strep Sore Throat infectious agent - ANSWER Streptococcus pyogenes
Strep Sore Throat morphology - ANSWER cocci, chains
Strep Sore Throat is Gram _______ - ANSWER Positive
Strep Sore Throat signs/symptoms - ANSWER sore red throat with puss, swollen
lymph nodes, difficulty swallowing, abscess formation, rheumatic fever,
glomerulonephritis
Strep Sore Throat virulence - ANSWER 1) M proteins that degrade C3b
2) Hyaluronic acid capsule
3) Protein G - inhibits antibody function
4) C5a peptidase,
exotoxins
Strep Sore Throat treatment - ANSWER Antibiotics (was a dreaded disease
before them)
Strep Sore Throat incubation period - ANSWER Short (2-5 days)
Diphtheria infectious agent - ANSWER Corynebacterium diphtheriae
Diphtheria morphology - ANSWER Rod, aerobic, nonmotile
Diphtheria is Gram _______ - ANSWER Positive
Diphtheria signs/symptoms - ANSWER sore throat, fever, fatigue, malaise,
pseudomembrane on tonsils, paralysis, heart and kidney failure
Diphtheria virulence - ANSWER diphtheria toxin (A-B
toxin)
Diphtheria treatment - ANSWER TDaP/Dtap vaccine, or antitoxin; antibiotic to
prevent transmission
Diphtheria incubation period - ANSWER Short (2-5 days)
The common cold infectious agent - ANSWER rhinovirus (more than 100 types)
,The common cold DNA or RNA? - ANSWER Naked RNA virus
The common cold signs/symptoms - ANSWER scratchy throat, headache, cough,
malaise, nasal discharge (usually no fever)
The common cold virulence - ANSWER Since there are 100+ strains,
body mounts a primary
immune response - RNA
The common cold treatment - ANSWER -Handwashing for prevention
-Common cold medicine that may or may not help
The common cold incubation period - ANSWER -Short (1-2 days)
Adenoviral Pharyngitis infectious agent - ANSWER adenovirus - 50 types
Adenoviral Pharyngitis DNA or RNA? - ANSWER Naked DNA virus
Adenoviral Pharyngitis signs/symptoms - ANSWER fever, sore throat, swollen
lymph nodes, pus on tonsils, sometimes conjunctivitis or pneumonia (mimics
strep)
Adenoviral Pharyngitis virulence - ANSWER There are 50 types of virus - can
mutate and multiply rapidly
Adenoviral Pharyngitis treatment - ANSWER - avoid by hand washing
- no treatment except for symptoms and no vaccine
Pneumococcal Pneumonia infectious agent - ANSWER Streptococcus
pneumoniae
Pneumococcal Pneumonia morphology - ANSWER diplococcus with capsule
Pneumococcal Pneumonia is Gram ___________ - ANSWER Positive
Pneumococcal Pneumonia signs/symptoms - ANSWER cough, fever, sputum
with copper color because of blood, shortness of breath and chest pain,
sequelae = meningitis
Pneumococcal Pneumonia virulence - ANSWER capsule - over 90 strains based
on
the different capsules
Pneumococcal Pneumonia treatment - ANSWER -antibiotics
-capsular vaccine available
, -conjugate vaccine for infants
Pneumococcal Pneumonia incubation period - ANSWER Short (1-3 days)
Klebsiella Pneumonia infectious agent - ANSWER Klebsiella Pneumoniae
Klebsiella Pneumonia morphology - ANSWER Rod
Klebsiella Pneumonia is Gram ________ - ANSWER Negative
Klebsiella Pneumonia signs/symptoms - ANSWER - chills, fever, cough, chest
pain, and bloody mucus sputum
- in bloodstream can cause
endotoxic shock and death
Klebsiella Pneumonia virulence - ANSWER capsule and endotoxin
Klebsiella Pneumonia treatment - ANSWER -antibiotics
-no vaccine
-resistance is a big issue - KPC, resistance on conjugative plasmid
Klebsiella Pneumonia incubation period - ANSWER Short (1-3 days)
Mycoplasmal Pneumonia infectious agent - ANSWER Mycoplasma pneumoniae
Mycoplasmal Pneumonia morphology - ANSWER - no cell wall
- aerobic
Mycoplasmal Pneumonia signs/symptoms - ANSWER - cough, sputum
production, fever, fatigue, muscle ache
- onset of symptoms is gradual
-recurrent infections are common
Mycoplasmal Pneumonia virulence - ANSWER - lack of cell wall
- very small and slow growth
Mycoplasmal Pneumonia treatment - ANSWER no vaccine - since there is no cell
wall they don't respond to beta lactams
Mycoplasmal Pneumonia incubation period - ANSWER Long (2-3 weeks)
Pertussis (Whooping cough) infectious agent - ANSWER Bordetella pertussis
Pertussis (Whooping cough) morphology - ANSWER Aerobic rod
Pertussis (Whooping cough) is Gram __________ - ANSWER Negative
Verified Answers
Strep Sore Throat infectious agent - ANSWER Streptococcus pyogenes
Strep Sore Throat morphology - ANSWER cocci, chains
Strep Sore Throat is Gram _______ - ANSWER Positive
Strep Sore Throat signs/symptoms - ANSWER sore red throat with puss, swollen
lymph nodes, difficulty swallowing, abscess formation, rheumatic fever,
glomerulonephritis
Strep Sore Throat virulence - ANSWER 1) M proteins that degrade C3b
2) Hyaluronic acid capsule
3) Protein G - inhibits antibody function
4) C5a peptidase,
exotoxins
Strep Sore Throat treatment - ANSWER Antibiotics (was a dreaded disease
before them)
Strep Sore Throat incubation period - ANSWER Short (2-5 days)
Diphtheria infectious agent - ANSWER Corynebacterium diphtheriae
Diphtheria morphology - ANSWER Rod, aerobic, nonmotile
Diphtheria is Gram _______ - ANSWER Positive
Diphtheria signs/symptoms - ANSWER sore throat, fever, fatigue, malaise,
pseudomembrane on tonsils, paralysis, heart and kidney failure
Diphtheria virulence - ANSWER diphtheria toxin (A-B
toxin)
Diphtheria treatment - ANSWER TDaP/Dtap vaccine, or antitoxin; antibiotic to
prevent transmission
Diphtheria incubation period - ANSWER Short (2-5 days)
The common cold infectious agent - ANSWER rhinovirus (more than 100 types)
,The common cold DNA or RNA? - ANSWER Naked RNA virus
The common cold signs/symptoms - ANSWER scratchy throat, headache, cough,
malaise, nasal discharge (usually no fever)
The common cold virulence - ANSWER Since there are 100+ strains,
body mounts a primary
immune response - RNA
The common cold treatment - ANSWER -Handwashing for prevention
-Common cold medicine that may or may not help
The common cold incubation period - ANSWER -Short (1-2 days)
Adenoviral Pharyngitis infectious agent - ANSWER adenovirus - 50 types
Adenoviral Pharyngitis DNA or RNA? - ANSWER Naked DNA virus
Adenoviral Pharyngitis signs/symptoms - ANSWER fever, sore throat, swollen
lymph nodes, pus on tonsils, sometimes conjunctivitis or pneumonia (mimics
strep)
Adenoviral Pharyngitis virulence - ANSWER There are 50 types of virus - can
mutate and multiply rapidly
Adenoviral Pharyngitis treatment - ANSWER - avoid by hand washing
- no treatment except for symptoms and no vaccine
Pneumococcal Pneumonia infectious agent - ANSWER Streptococcus
pneumoniae
Pneumococcal Pneumonia morphology - ANSWER diplococcus with capsule
Pneumococcal Pneumonia is Gram ___________ - ANSWER Positive
Pneumococcal Pneumonia signs/symptoms - ANSWER cough, fever, sputum
with copper color because of blood, shortness of breath and chest pain,
sequelae = meningitis
Pneumococcal Pneumonia virulence - ANSWER capsule - over 90 strains based
on
the different capsules
Pneumococcal Pneumonia treatment - ANSWER -antibiotics
-capsular vaccine available
, -conjugate vaccine for infants
Pneumococcal Pneumonia incubation period - ANSWER Short (1-3 days)
Klebsiella Pneumonia infectious agent - ANSWER Klebsiella Pneumoniae
Klebsiella Pneumonia morphology - ANSWER Rod
Klebsiella Pneumonia is Gram ________ - ANSWER Negative
Klebsiella Pneumonia signs/symptoms - ANSWER - chills, fever, cough, chest
pain, and bloody mucus sputum
- in bloodstream can cause
endotoxic shock and death
Klebsiella Pneumonia virulence - ANSWER capsule and endotoxin
Klebsiella Pneumonia treatment - ANSWER -antibiotics
-no vaccine
-resistance is a big issue - KPC, resistance on conjugative plasmid
Klebsiella Pneumonia incubation period - ANSWER Short (1-3 days)
Mycoplasmal Pneumonia infectious agent - ANSWER Mycoplasma pneumoniae
Mycoplasmal Pneumonia morphology - ANSWER - no cell wall
- aerobic
Mycoplasmal Pneumonia signs/symptoms - ANSWER - cough, sputum
production, fever, fatigue, muscle ache
- onset of symptoms is gradual
-recurrent infections are common
Mycoplasmal Pneumonia virulence - ANSWER - lack of cell wall
- very small and slow growth
Mycoplasmal Pneumonia treatment - ANSWER no vaccine - since there is no cell
wall they don't respond to beta lactams
Mycoplasmal Pneumonia incubation period - ANSWER Long (2-3 weeks)
Pertussis (Whooping cough) infectious agent - ANSWER Bordetella pertussis
Pertussis (Whooping cough) morphology - ANSWER Aerobic rod
Pertussis (Whooping cough) is Gram __________ - ANSWER Negative
