Answer Options:
The disease is zoonotic.
The pathogen can’t survive well outside the host.
The pathogen can survive well outside the host.
The pathogen is a fungus.
Answer: The pathogen can’t survive well outside the host.
Question: Which of the following has the highest infectious dose necessary to cause disease?
Answer Options:
Chickenpox (inhalation)
Measles (inhalation)
Gonorrhea (sexual contact)
Viral encephalitis (mosquito bite)
Answer: Gonorrhea (sexual contact)
Question: __________ is present at birth and aids in defending against any invading pathogen.
Answer Options:
Innate immunity
Adaptive immunity
Answer: Innate immunity
Question: True or False: Interferons are effective against viral pathogens.
Answer Options:
True
False
Answer: True
Question: The Iceberg Effect in epidemiology refers to:
Answer Options:
A. Getting an infection from bacteria native to icebergs
B. The process by which an outbreak becomes a pandemic
C. Many more communicable disease infections occur every year than are reported/diagnosed
D. When penguins are vectors for zoonotic disease
Answer: C. Many more communicable disease infections occur every year than are reported/diagnosed
Question: Members of the genus Vibrio belong to the class ________ and are usually found in ________ environments.
Answer Options:
Alphaproteobacteria/soil
Alphaproteobacteria/marine
Gammaproteobacteria/soil
Gammaproteobacteria/marine
Answer: Gammaproteobacteria/marine
Question: Neutrophils with defective lysosomes are unable to:
Answer Options:
Undergo chemotaxis
Migrate
Degrade microorganisms and other foreign material
Attach to microorganisms and other foreign material
Engulf microorganisms and other foreign material
Answer: Degrade microorganisms and other foreign material
Question: Human skin is generally populated by what specialized group of microbes?
Answer Options:
A. Acidophiles
B. Psychrophiles
C. Methanogens
D. Halophiles
Answer: Acidophiles
Question: Which is a suffix (word ending) used to denote something that kills cells:
Answer Options:
-cidal
-lethal
-static
-phobic
Answer: -cidal
Question: The endosymbiotic theory posits that which eukaryotic organelle arose from a bacterial cell being engulfed by a larger archaeal cell?
Answer Options:
Ribosome
Mitochondria
Nucleus
Flagella
Polypeptides
Answer: Mitochondria
Question: A phage is a virus that infects:
Answer Options:
Bacteria
Archaea
Protists
Humans
It is not a virus
Answer: Bacteria
Question: What type of culture contains only one type of bacterial species? Answer in two words, please check spelling.
Answer: pure culture
Question: True or False: A benefit of complex media is that we know the exact proportion of all chemical ingredients used.
Answer Options:
True
False
Answer: False
Question: During which phase of the bacterial growth curve are you most likely to observe an equal proportion of live and dead cells, leaving the population in a steady state?
Answer Options:
Lag Phase
Exponential Phase
Stationary Phase
Death Phase
Answer: Stationary Phase
Question: Which of the following is an example of a zoonotic disease?
Answer Options:
Hantavirus
Ebola
Rabies
All of the above are zoonotic diseases
Answer: All of the above are zoonotic diseases
Question: You have a culture with a cell density of 6.7 x 10^3 CFU/mL. What final dilution factor would give you countable plates from this culture?
Answer Options:
10^5
10^6
10^7
10^8
10^9
Answer: 10^6
Question: The ___ step is the most crucial and frequent source of Gram stain inconsistency.
Answer Options:
primary stain
decolorization
heat fixation
inoculation
Answer: decolorization
Question: When you perform a gram stain, gram negative organisms appear ________ and gram positive organisms appear ________.
Answer Options:
pink; purple
purple; colorless
purple; pink
colorless; pink
Answer: pink; purple