MIC 205 Final Exam STUDY SET
WITH COMPLETE QUESTIONS AND
CORRECT DETAILED ANSWERS
ALREADY GRADED A+|| RANKED!!!
Which scientist is remembered for having developed the first microscope
that could resolve microorganisms? Lecture - ANSWERS-Dr. Antonie van
Leeuwenhoek: compound microscope
Which domain of life contains microorganisms - ANSWERS-a. Eubacteria
b. Eukaryotes
c. Archaea
True or False - The human body contains 10 times more prokaryotic cells
than eukaryotic cells. - ANSWERS-True: We have more microorganisms on
our bodies than our own cells.
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 - ANSWERS-e. Botox
will not prevent or treat any of these diseases
,Which of the following bacterial species are capable of converting nitrogen
gas in the atmosphere into compounds that other organisms can better
utilize? - ANSWERS-Rhizobium spp. : gram -, fix nitrogen
Of the bacterial species listed below, which do not utilize type IV secretion to
transfer DNA or proteins into eukaryotic cells? - ANSWERS-Neisseria
gonorrhoeae Type V secretion
After graduating from the University of Arizona you decided to become a
benthic marine biologist (studying the sea floor). Your 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? -
ANSWERS-(Alii)Vibrio fischeri - Aliivibrio fisheri; produce visible light at high
bacterial concentrations.
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? - ANSWERS-Klebsiella
pneumoniae : bacillus
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 UofA 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? - ANSWERS-Clostridium difficile :colitis is a chronic, inflammatory
bowel disease
,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? -
ANSWERS-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 individual
infected in part C.
True or False - Koch's Postulates have been used to show that all known
diseases are microbial in origin. - ANSWERS-False: Not known, only a method
to prove what causes disease. Not all diseases are microbial in origin;
example: genetic diseases.
I am sure you took the time to study osmosis. Here is your chance to be
rewarded. What would happen to a bacterial cell if you placed it in an
isotonic solution? - ANSWERS-Nothing would happen to the bacterial cell.
because of cell wall
Which of the following statements best characterizes the role of ATP in active
transport? - ANSWERS-ATP hydrolysis generates the energy to move a
compound from a low concentration outside the cell into the high
concentration inside the cell
When cyanobacteria first evolved photosynthesis (about 2.3 billion years
ago), they killed off most life on earth. What metabolic byproduct of
cyanobacteria photosynthesis killed off most of the other organisms? -
ANSWERS-Oxygen gas (O2)
, Which of the following statements about the bacterial glycocalyx is correct?
Lecture 3 Slide 24-25
a. Some bacteria, including Klebsiella pneumoniae, have a highly organized
glycocalyx - capsule - that can function to protect the bacteria from the host
immune system.
b. Some bacteria secrete protein via the glycocalyx complex between the
inner and outer membrane.
c. Some bacteria utilize the glycocalyx for a type motility known as twitching
motility
d. All of the above are correct statements about bacterial glycocalyx. -
ANSWERS-d. All of the above are correct statements about bacterial
glycocalyx.
What is the fate of the mother cell during bacterial sporulation after the
endospore is released? - ANSWERS-The mother cell is sacrificed in order to
allow the endospore to escape.
What is the process of bacterial communication by which bacteria are able to
determine the number of proximal microorganisms? - ANSWERS-Quorum
sensing
Which of the following statements about the central dogma is not correct?
Lecture 4 slide 11
a. DNA stores information to direct protein synthesis and passes that
information from generation to generation.
b. RNA is a less stable intermediary that forms a template for protein
synthesis.
c. Ribosomes synthesize proteins by polymerizing amino acids in an order
determined by an RNA template
WITH COMPLETE QUESTIONS AND
CORRECT DETAILED ANSWERS
ALREADY GRADED A+|| RANKED!!!
Which scientist is remembered for having developed the first microscope
that could resolve microorganisms? Lecture - ANSWERS-Dr. Antonie van
Leeuwenhoek: compound microscope
Which domain of life contains microorganisms - ANSWERS-a. Eubacteria
b. Eukaryotes
c. Archaea
True or False - The human body contains 10 times more prokaryotic cells
than eukaryotic cells. - ANSWERS-True: We have more microorganisms on
our bodies than our own cells.
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 - ANSWERS-e. Botox
will not prevent or treat any of these diseases
,Which of the following bacterial species are capable of converting nitrogen
gas in the atmosphere into compounds that other organisms can better
utilize? - ANSWERS-Rhizobium spp. : gram -, fix nitrogen
Of the bacterial species listed below, which do not utilize type IV secretion to
transfer DNA or proteins into eukaryotic cells? - ANSWERS-Neisseria
gonorrhoeae Type V secretion
After graduating from the University of Arizona you decided to become a
benthic marine biologist (studying the sea floor). Your 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? -
ANSWERS-(Alii)Vibrio fischeri - Aliivibrio fisheri; produce visible light at high
bacterial concentrations.
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? - ANSWERS-Klebsiella
pneumoniae : bacillus
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 UofA 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? - ANSWERS-Clostridium difficile :colitis is a chronic, inflammatory
bowel disease
,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? -
ANSWERS-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 individual
infected in part C.
True or False - Koch's Postulates have been used to show that all known
diseases are microbial in origin. - ANSWERS-False: Not known, only a method
to prove what causes disease. Not all diseases are microbial in origin;
example: genetic diseases.
I am sure you took the time to study osmosis. Here is your chance to be
rewarded. What would happen to a bacterial cell if you placed it in an
isotonic solution? - ANSWERS-Nothing would happen to the bacterial cell.
because of cell wall
Which of the following statements best characterizes the role of ATP in active
transport? - ANSWERS-ATP hydrolysis generates the energy to move a
compound from a low concentration outside the cell into the high
concentration inside the cell
When cyanobacteria first evolved photosynthesis (about 2.3 billion years
ago), they killed off most life on earth. What metabolic byproduct of
cyanobacteria photosynthesis killed off most of the other organisms? -
ANSWERS-Oxygen gas (O2)
, Which of the following statements about the bacterial glycocalyx is correct?
Lecture 3 Slide 24-25
a. Some bacteria, including Klebsiella pneumoniae, have a highly organized
glycocalyx - capsule - that can function to protect the bacteria from the host
immune system.
b. Some bacteria secrete protein via the glycocalyx complex between the
inner and outer membrane.
c. Some bacteria utilize the glycocalyx for a type motility known as twitching
motility
d. All of the above are correct statements about bacterial glycocalyx. -
ANSWERS-d. All of the above are correct statements about bacterial
glycocalyx.
What is the fate of the mother cell during bacterial sporulation after the
endospore is released? - ANSWERS-The mother cell is sacrificed in order to
allow the endospore to escape.
What is the process of bacterial communication by which bacteria are able to
determine the number of proximal microorganisms? - ANSWERS-Quorum
sensing
Which of the following statements about the central dogma is not correct?
Lecture 4 slide 11
a. DNA stores information to direct protein synthesis and passes that
information from generation to generation.
b. RNA is a less stable intermediary that forms a template for protein
synthesis.
c. Ribosomes synthesize proteins by polymerizing amino acids in an order
determined by an RNA template
