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MCB3020 EXAM 1 USF QUESTIONS AND ANSWERS
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MCB3020 EXAM 1 USF QUESTIONS AND ANSWERS
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Name: Score:71 Multiple choice questions
Definition 1 of 71
a measure of the degree to which bacteria in a solution retard the transition of light by
absorbing it
Optical density (OD)
Photolithoautotrophs
Water Activity (Aw)
Quorum sensing
Definition 2 of 71
molecule produced by many gram-negative organisms during quorum sensing; it induces the
expression of virulence genes
Acyl-homoserine lactone (AHL)
Superoxide dismutase (sod)
Macconkey (mac) agar
Water activity (aw)
Definition 3 of 71
a group translocation system that chemically alters glucose as it enters the cell
water activity (aw)
superoxide dismutase (sod)
phosphotransferase system (PTS)
optical density (od)
,Definition 4 of 71
Enzyme produced by human cells in response to infection and destroys the cell walls of
pathogens
Teichoic Acid
Catalase
Amylase
Lysozyme
Definition 5 of 71
organisms that grow well at 0 degrees C and have an optimum growth at 15 degrees C
Psychrophiles
Thermophiles
Psychrotrophs
microaerophile
Definition 6 of 71
does not require oxygen for growth but it grows significantly faster w oxygen
Facultative anaerobe
obligate anaerobe
Obligate anaerobe
Microaerophile
Definition 7 of 71
Derive carbon source solely from CO2
Autotroph
Capsule
Heterotroph
Aerotolerant Anaerobe
,Definition 8 of 71
"magic bullets"
Robert Koch
Paul Ehrlich
Edward Jenner
Louis Pasteur
Definition 9 of 71
optimum growth temps around 20-45 (E. coli) human pathogens grow best near body temp
around 37
Psychrophiles
Mesophiles
Psychrophiles
Psychrotrophs
Definition 10 of 71
Monera
Catch all kingdom
Phosphodiester bonds
Facultative anaerobe
Prokaryotic kingdom
, Definition 11 of 71
the ratio of the velocity of light in a vacuum to its veloctiy in a medium- determines how much
light will bend as it passes through the medium
Refractive index
Resolving power
Resolution
Viscosity
Definition 12 of 71
Gram-positive, coccus bacteria
Lactobacillus or Clostridium
Enterobacter and Escherichia
Streptococcus or Staphylococcus
Bacillus and Corynebacterium
Definition 13 of 71
Spirochete-shaped bacteria
Penicillin
Hepatitis a and epidemic parotitis
Lyme Disease and syphilis
Clostridium perfringens
Definition 14 of 71
Adds rigidity to the cell wall in some gram-positive bacteria
Slime Layer
Capsule
Lysozyme
Teichoic Acid
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