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MCB 2610 exam 1 Question and answers rated A+ 2024/2025
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MCB 2610 exam 1 Question and answers rated A+ 2024/2025 MCB 2610 exam 1 - rossi Serratia Marcescens - correct answer ~single, gram neg. rod ~found in grout, bathrooms, soil ~grows well because of substrates (make ATP) ~causes UTIS.infections/conjuctivitis/ keratitis ~R plasmid = antibio...

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  • October 16, 2024
  • 16
  • 2024/2025
  • Exam (elaborations)
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MCB 2610 exam 1 - rossi
Serratia Marcescens - correct answer ✔~single, gram neg. rod
~found in grout, bathrooms, soil
~grows well because of substrates (make ATP)
~causes UTIS.infections/conjuctivitis/ keratitis
~R plasmid = antibiotic resistance
~pathogenic - killed 1 and infected 11 in training drills
~ motile single polar flagellum
~ facultative anaerobe
~non spore forming
~mesophile


E. Coli - correct answer ✔~gram negative, single, short rods
~common in intestinal tract - .1%
~peritrichous flagella
~usually not pathogenic, but can contaminate food/water (0157:H7)
~causes UTIs
0157:H7 can cause acute/ hemorrhagic diarrhea (danger to old and young -
hemolytic uremic syndrome and kidney failure)
oxidase neg. catalase pos.
facultative anaerobe
non spore forming


legionella pneumonphilia - correct answer ✔~
~small, gram negative rods

,~aerobic, motile by single flagellum
~mesophile with wider range (23-45)
~common in even treated water (convention of legion in phille - 34 deaths,
221 cases at hotel)
~16 serotypes/ subgroups (8-18,000 cases per year in the us)
~24% mortality rate
~transmitted by aerosols
~form 1 - pontaic fever (flu like)
~form 2 - legionnares disease (potentially fatal pneumonia)
~a21 thromycin - children antibio.
~ doxycline/ trimethoprim (adults)
sensitive to heavy metals and chlorines
increasing in frequency


Klebsiella pneumoniae - correct answer ✔~gram negative rod
~pathogenic noscomial pneumonia
~rod shaped (bacillus) singles or in pairs
~ 30% fix N
~found in mouth, skin, intestines, soil (aspiration)
~50% mortality rate with treatment
~2nd leading cause of UTIs
~non- motile
capsule
facultative anaerobe
lactose fermenting
mesophile

, listeria monocytogenes - correct answer ✔~
~foodborne PATHOGEN
~20-30% result in death (2500 cases, 500 deaths per year)
~can be mild but severe in pregnant women (spontaneous abortion bc
immune system is suppressed)
~resistant to freezing, drying, heating
~ peritrichous flagella below 30, no flagella at 37
nova scotia cole slaw and poo
taken in by host cell- phagocytosis, enzymes produced, explosive
polymerization of actin filaments
~beta hemolytic
~ penicillin and ampricillin
~sensitive to alcohols
~facultative anaerobe, gram pos. rod
~non spore frming
~grows 1-45 degrees, ph 4.3-9.6


prokaryotes - correct answer ✔~Bacteria and Archaea
~open floor plan
~lack true membrane bound organelles
~lack true membrane-delimited nucleus


eukaryotes - correct answer ✔~closed floor plan
~membrane bound nucleus and membrane bound organelles
~morphologically more complex than prokaryotes

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