MIC 205 FINAL EXAM COMPLETE QUESTIONS
WITH 100% VERIFIED ANSWERS
1. Which of the following bacterial species are capable of converting nitrogen
gas in the atmosphere into compounds that other organisms can better utilize?
a. Escherichia coli
b. Streptococcus pyogenes
c. Rhizobium spp.
d. Bacillus anthracis
e. Clostridium tetani
• Correct Answer: c. Rhizobium spp.
2. Of the bacterial species listed below, which do not utilize type IV secretion to
transfer DNA or proteins into eukaryotic cells?
a. Bordetella pertussis
b. Legionella pneumophila
c. Helicobacter pylori
d. Neisseria gonorrhoeae
e. Brucella abortus
• Correct Answer: d. Neisseria gonorrhoeae (utilizes Type V secretion)
3. After graduating from the University of Arizona you decided to become a
benthic marine biologist (studying the sea floor). You have been using large
dragnets to collect sea floor marine life. In your first net you see a new species
of anglerfish. These fish have a light organ protruding in front of their mouth
that is used to attract prey fish in the dark depths of the ocean. You suspect that
the light organ will contain bacteria. What species from the list below do you
,suspect is most likely to have colonized the light organ?
a. Escherichia coli
b. Aliivibrio fischeri
c. Salmonella enterica
d. Pseudomonas aeruginosa
e. Staphylococcus aureus
• Correct Answer: b. Aliivibrio fischeri
4. Hans Christian Gram is famous for developing a staining technique that
separates pathogenic bacteria into two roughly equal sized groups. He originally
developed this technique to differentiate two bacteria (one a bacillus and one a
coccus) that were causing the same disease. Which of the bacteria below was
the bacillus in his samples?
a. Streptococcus pneumoniae
b. Staphylococcus aureus
c. Klebsiella pneumoniae
d. Neisseria meningitidis
e. Enterococcus faecalis
• Correct Answer: c. Klebsiella pneumoniae
5. The one thing you learned by your summer at sea (question #3) is that you do
not like water. You decided to return to the arid lands of Arizona where rivers
only have water flowing in them a few weeks out of the year. As fortune would
have it, you have been accepted into the U of A medical school. In your surgical
rotation you will be learning under the tutelage of Dr. Yavan Knowsomuch. On
the first day with her, Dr. Knowsomuch offhandedly remarks that her patients
keep developing colitis after they are discharged from her care. What species of
bacteria do you suspect is causing these symptoms?
a. Staphylococcus aureus
b. Escherichia coli
,c. Clostridium difficile
d. Bacteroides fragilis
e. Streptococcus pyogenes
• Correct Answer: c. Clostridium difficile
6. Robert Koch was one of the scientists in the late 19th century involved in
developing the Germ Theory. This theory states that diseases are caused by
microscopic organisms. Dr. Koch's lasting contribution to this theory was a
systematic approach for identifying the microbial cause of a disease. We call this
approach Koch's Postulates. What were the declarative statements?
a. You must find the microbe in all cases of the disease.
b. You must be able to grow the microbe in a pure culture.
c. The pure culture must be able to cause the same disease in a new individual.
d. You must be able to re-isolate the original organism from the individual infected
in part C.
e. All of the above.
• Correct Answer: e. All of the above.
7. True or False - Koch's Postulates have been used to show that all known
diseases are microbial in origin.
a. True
b. False
• Correct Answer: b. False
8. Which scientist is remembered for having developed the first microscope that
could resolve microorganisms?
a. Robert Koch
b. Louis Pasteur
c. Joseph Lister
, d. Dr. Antonie van Leeuwenhoek
e. Ignaz Semmelweis
• Correct Answer: d. Dr. Antonie van Leeuwenhoek
9. Which domain of life contains microorganisms?
a. Eubacteria
b. Eukaryotes
c. Archaea
d. All of the above
e. None of the above
• Correct Answer: d. All of the above
10. True or False - The human body contains 10 times more prokaryotic cells
than eukaryotic cells.
a. True
b. False
• Correct Answer: a. True
11. Clostridium botulinum is a Gram-positive spore-forming bacterium that
produces a toxin that can block the release of neurotransmitters from human
neurons. The purified toxin has been shown to be useful in the treatment of
which of the following diseases:
a. Aging
b. Diarrhea
c. The flu
d. Alcoholism
e. Botox will not prevent or treat any of these diseases
• Correct Answer: e. Botox will not prevent or treat any of these diseases
WITH 100% VERIFIED ANSWERS
1. Which of the following bacterial species are capable of converting nitrogen
gas in the atmosphere into compounds that other organisms can better utilize?
a. Escherichia coli
b. Streptococcus pyogenes
c. Rhizobium spp.
d. Bacillus anthracis
e. Clostridium tetani
• Correct Answer: c. Rhizobium spp.
2. Of the bacterial species listed below, which do not utilize type IV secretion to
transfer DNA or proteins into eukaryotic cells?
a. Bordetella pertussis
b. Legionella pneumophila
c. Helicobacter pylori
d. Neisseria gonorrhoeae
e. Brucella abortus
• Correct Answer: d. Neisseria gonorrhoeae (utilizes Type V secretion)
3. After graduating from the University of Arizona you decided to become a
benthic marine biologist (studying the sea floor). You have been using large
dragnets to collect sea floor marine life. In your first net you see a new species
of anglerfish. These fish have a light organ protruding in front of their mouth
that is used to attract prey fish in the dark depths of the ocean. You suspect that
the light organ will contain bacteria. What species from the list below do you
,suspect is most likely to have colonized the light organ?
a. Escherichia coli
b. Aliivibrio fischeri
c. Salmonella enterica
d. Pseudomonas aeruginosa
e. Staphylococcus aureus
• Correct Answer: b. Aliivibrio fischeri
4. Hans Christian Gram is famous for developing a staining technique that
separates pathogenic bacteria into two roughly equal sized groups. He originally
developed this technique to differentiate two bacteria (one a bacillus and one a
coccus) that were causing the same disease. Which of the bacteria below was
the bacillus in his samples?
a. Streptococcus pneumoniae
b. Staphylococcus aureus
c. Klebsiella pneumoniae
d. Neisseria meningitidis
e. Enterococcus faecalis
• Correct Answer: c. Klebsiella pneumoniae
5. The one thing you learned by your summer at sea (question #3) is that you do
not like water. You decided to return to the arid lands of Arizona where rivers
only have water flowing in them a few weeks out of the year. As fortune would
have it, you have been accepted into the U of A medical school. In your surgical
rotation you will be learning under the tutelage of Dr. Yavan Knowsomuch. On
the first day with her, Dr. Knowsomuch offhandedly remarks that her patients
keep developing colitis after they are discharged from her care. What species of
bacteria do you suspect is causing these symptoms?
a. Staphylococcus aureus
b. Escherichia coli
,c. Clostridium difficile
d. Bacteroides fragilis
e. Streptococcus pyogenes
• Correct Answer: c. Clostridium difficile
6. Robert Koch was one of the scientists in the late 19th century involved in
developing the Germ Theory. This theory states that diseases are caused by
microscopic organisms. Dr. Koch's lasting contribution to this theory was a
systematic approach for identifying the microbial cause of a disease. We call this
approach Koch's Postulates. What were the declarative statements?
a. You must find the microbe in all cases of the disease.
b. You must be able to grow the microbe in a pure culture.
c. The pure culture must be able to cause the same disease in a new individual.
d. You must be able to re-isolate the original organism from the individual infected
in part C.
e. All of the above.
• Correct Answer: e. All of the above.
7. True or False - Koch's Postulates have been used to show that all known
diseases are microbial in origin.
a. True
b. False
• Correct Answer: b. False
8. Which scientist is remembered for having developed the first microscope that
could resolve microorganisms?
a. Robert Koch
b. Louis Pasteur
c. Joseph Lister
, d. Dr. Antonie van Leeuwenhoek
e. Ignaz Semmelweis
• Correct Answer: d. Dr. Antonie van Leeuwenhoek
9. Which domain of life contains microorganisms?
a. Eubacteria
b. Eukaryotes
c. Archaea
d. All of the above
e. None of the above
• Correct Answer: d. All of the above
10. True or False - The human body contains 10 times more prokaryotic cells
than eukaryotic cells.
a. True
b. False
• Correct Answer: a. True
11. Clostridium botulinum is a Gram-positive spore-forming bacterium that
produces a toxin that can block the release of neurotransmitters from human
neurons. The purified toxin has been shown to be useful in the treatment of
which of the following diseases:
a. Aging
b. Diarrhea
c. The flu
d. Alcoholism
e. Botox will not prevent or treat any of these diseases
• Correct Answer: e. Botox will not prevent or treat any of these diseases
