BIOD 171Final Exam LATEST 2025 UPDATE
WITH COMPLETE QUESTIONS AND
CORRECTLY WELL DEFINED ANSWERS
100%GUARANTEED PASS!!!
What would a researcher be certain to note while analyzing a microbial
sample? --<<answer>>--A lab researcher would be certain to note:
1. Size and shape
2. Any observable motility
3. Gram status (positive or negative)
4. The presence of any chemical reactions
5. Changes in color localized to the organism or the surrounding media
6. Capture (or draw) images of any of the characteristics described
above
Which non-selective yet differential agar plate should be used if a
Streptococcus sample is suspected? --<<answer>>--A BAP (blood agar
plate) would be the quickest way to identify and classify a potential
streptococcus microbe based on its hemolytic properties.
,What disease can result if a patient with streptococcal pharyngitis goes
untreated? --<<answer>>--Rheumatic fever occurs in approximately 3% of
untreated cases of streptococcal pharyngitis, presenting approximately
2-3 weeks post-infection.
Streptococcus, E. coli, pseudomonas, and klebsiella are all capable of
causing what disease? --<<answer>>--All of the above foreign microbes
are capable of causing septicemia, also known as blood poisoning.
What is a facultative anaerobe? --<<answer>>--A facultative anaerobe is
capable of growth under both aerobic (with oxygen) and anaerobic (in
the absence of oxygen) condition.
How can Staphylococcus be differentially tested? --<<answer>>--
Staphylococcus species are capable of growth in the presence of bile
salts.
A bacterial swab is taken from a patient with impetigo and streaked
across an MSA plate. Following incubation at 37C, what will be the color
of the agar? --<<answer>>--The causative agent of impetigo is staph
aureus, a Gram-positive bacterium capable of fermenting mannitol.
Fermentation will lower the pH of the agar and change the dye color
from red to yellow.
, If a patient were suspected to have tuberculosis (TB), which differential
stain would you select and why? --<<answer>>--To stain for TB, one would
utilize an acid-fast stain to best visual the foreign microbe. As a
mycobacterium tuberculosis would stain poorly (indeterminate) using
the Gram stain.
According to the module, which mycobacterium infection will be
treated free of charge by the World Health Organization (WHO)? --
<<answer>>--Leprosy is completely curable using a multiple-drug therapy
regimen consisting of various combinations of the drugs dapsone,
rifampin and clofazimine—all of which is given free of charge.
What are the three main conditions caused by the botulism toxin? --
<<answer>>--Foodborne, infant and wound. Foodborne botulism is often
the result of improperly canned, contaminated, low-acidic foods such as
green beans, corn and beats. Infant botulism occurs when children,
usually under the age of 6 months consume foods containing the
bacteria. A potential source of infant botulism is honey (which is why
pediatricians recommend avoiding feeding honey to infants) but can
also be found in common places such as soil. Wound botulism occurs
when C. botulinum bacteria colonize a deep wound, often a puncture
such as those who inject street drugs such as heroine. As contaminated
needles are injected through the skin, spores enter the body and, in the
absence of oxygen, release the toxin.
WITH COMPLETE QUESTIONS AND
CORRECTLY WELL DEFINED ANSWERS
100%GUARANTEED PASS!!!
What would a researcher be certain to note while analyzing a microbial
sample? --<<answer>>--A lab researcher would be certain to note:
1. Size and shape
2. Any observable motility
3. Gram status (positive or negative)
4. The presence of any chemical reactions
5. Changes in color localized to the organism or the surrounding media
6. Capture (or draw) images of any of the characteristics described
above
Which non-selective yet differential agar plate should be used if a
Streptococcus sample is suspected? --<<answer>>--A BAP (blood agar
plate) would be the quickest way to identify and classify a potential
streptococcus microbe based on its hemolytic properties.
,What disease can result if a patient with streptococcal pharyngitis goes
untreated? --<<answer>>--Rheumatic fever occurs in approximately 3% of
untreated cases of streptococcal pharyngitis, presenting approximately
2-3 weeks post-infection.
Streptococcus, E. coli, pseudomonas, and klebsiella are all capable of
causing what disease? --<<answer>>--All of the above foreign microbes
are capable of causing septicemia, also known as blood poisoning.
What is a facultative anaerobe? --<<answer>>--A facultative anaerobe is
capable of growth under both aerobic (with oxygen) and anaerobic (in
the absence of oxygen) condition.
How can Staphylococcus be differentially tested? --<<answer>>--
Staphylococcus species are capable of growth in the presence of bile
salts.
A bacterial swab is taken from a patient with impetigo and streaked
across an MSA plate. Following incubation at 37C, what will be the color
of the agar? --<<answer>>--The causative agent of impetigo is staph
aureus, a Gram-positive bacterium capable of fermenting mannitol.
Fermentation will lower the pH of the agar and change the dye color
from red to yellow.
, If a patient were suspected to have tuberculosis (TB), which differential
stain would you select and why? --<<answer>>--To stain for TB, one would
utilize an acid-fast stain to best visual the foreign microbe. As a
mycobacterium tuberculosis would stain poorly (indeterminate) using
the Gram stain.
According to the module, which mycobacterium infection will be
treated free of charge by the World Health Organization (WHO)? --
<<answer>>--Leprosy is completely curable using a multiple-drug therapy
regimen consisting of various combinations of the drugs dapsone,
rifampin and clofazimine—all of which is given free of charge.
What are the three main conditions caused by the botulism toxin? --
<<answer>>--Foodborne, infant and wound. Foodborne botulism is often
the result of improperly canned, contaminated, low-acidic foods such as
green beans, corn and beats. Infant botulism occurs when children,
usually under the age of 6 months consume foods containing the
bacteria. A potential source of infant botulism is honey (which is why
pediatricians recommend avoiding feeding honey to infants) but can
also be found in common places such as soil. Wound botulism occurs
when C. botulinum bacteria colonize a deep wound, often a puncture
such as those who inject street drugs such as heroine. As contaminated
needles are injected through the skin, spores enter the body and, in the
absence of oxygen, release the toxin.
