MICROBIOLOGY 2460 EXAM 2 LATEST ACTUAL EXAM WITH
VERIFIED QUESTIONS & CORRECT ANSWERS
Question 1.
The term prokaryotes refers to which of the follow-
ing?
A. very small organisms
B. unicellular organisms that have no nucleus
C. multicellular organisms
D. cells that resemble animal cells more than plant
cells.
Correct Answer: B
Question 2.
The term microbiota refers to which of the following? a. all microorganisms of the same
species b. all of the microorganisms involved in a symbiotic relationship c. all
microorganisms in a certain region of the human body d. all microorganisms in a certain
geographic region
Correct Answer: C
Question 3.
Which of the following refers to the type of interaction between two prokaryotic
populations in which one population benefits and the other is not affected? a. mutualism
b. commensalism c. parasitism d. neutralism
Correct Answer: B
Question 4.
Which of the following describes Proteobacteria in domain Bacteria? a. phylum b. class c.
species d. genus
Correct Answer: A
Question 5.
All Alphaproteobacteria are which of the following? a. oligotrophs b. intracellular c.
pathogenic d. all of the above e. none of the above
Correct Answer: A
Question 6.
Class Betaproteobacteria includes all but which of the following genera? a. Neisseria. b.
Bordetella. c. Leptothrix. d. Campylobacter.
Correct Answer: D
,Question 7.
Haemophilus influenzae is a common cause of which of the following? a. influenza b.
dysentery c. upper respiratory tract infections d. hemophilia
Correct Answer: C
Question 8.
Which of the following is the organelle that spirochetes use to propel themselves? a.
plasma membrane b. axial filament c. pilum d. fimbria
Correct Answer: B
Question 9.
Which of the following bacteria are the most prevalent in the human gut? a. cyanobacteria
b. staphylococci c. Borrelia d. Bacteroides
Correct Answer: D
Question 10.
Which of the following refers to photosynthesis performed by bacteria with the use of
water as the donor of electrons? a. oxygenic b. anoxygenic c. heterotrophic d.
phototrophic
Correct Answer: A
Question 11.
Which of the following bacterial species is classified as high G+C gram-positive? a.
Corynebacterium diphtheriae b. Staphylococcus aureus c. Bacillus anthracis d.
Streptococcus pneumoni
Correct Answer: A
Question 12.
The term "deeply branching" refers to which of the following? a. the cellular shape of
deeply branching bacteria b. the position in the evolutionary tree of deeply branching
bacteria c. the ability of deeply branching bacteria to live in deep ocean waters d. the
pattern of growth in culture of deeply branching bacteria
Correct Answer: B
Question 13.
Which of these deeply branching bacteria is considered a polyextremophile? a. Aquifex
pyrophilus b. Deinococcus radiodurans c. Staphylococcus aureus d. Mycobacterium
tuberculosis
Correct Answer: B
, Question 14.
Archaea and Bacteria are most similar in terms of their ________. a. genetics b. cell wall
structure c. ecology d. unicellular structure
Correct Answer: D
Question 15.
Which of the following is true of archaea that produce methane? a. They reduce carbon
dioxide in the presence of nitrogen. b. They live in the most extreme environments. c.
They are always anaerobes. d. They have been discovered on Mars.
Correct Answer: B
Question 16.
Which genus includes the causative agent for malaria? a. Euglena b. Paramecium c.
Plasmodium d. Trypanosoma
Correct Answer: C
Question 17.
Which protist is a concern because of its ability to contaminate water supplies and cause
diarrheal illness? a. Plasmodium vivax b. Toxoplasma gondii c. Giardia lamblia d.
Trichomonas vaginalis
Correct Answer: C
Question 18.
A fluke is classified within which of the following? a. Nematoda b. Rotifera c.
Platyhelminthes d. Annelida
Correct Answer: C
Question 19.
A nonsegmented worm is found during a routine colonoscopy of an individual who
reported having abdominal cramps, nausea, and vomiting. This worm is likely which of the
following? a. nematode b. fluke c. trematode d. annelid
Correct Answer: A
Question 20.
A segmented worm has male and female reproductive organs in each segment. Some use
hooks to attach to the intestinal wall. Which type of worm is this? a. fluke b. nematode c.
cestode d. annelid
Correct Answer: C
VERIFIED QUESTIONS & CORRECT ANSWERS
Question 1.
The term prokaryotes refers to which of the follow-
ing?
A. very small organisms
B. unicellular organisms that have no nucleus
C. multicellular organisms
D. cells that resemble animal cells more than plant
cells.
Correct Answer: B
Question 2.
The term microbiota refers to which of the following? a. all microorganisms of the same
species b. all of the microorganisms involved in a symbiotic relationship c. all
microorganisms in a certain region of the human body d. all microorganisms in a certain
geographic region
Correct Answer: C
Question 3.
Which of the following refers to the type of interaction between two prokaryotic
populations in which one population benefits and the other is not affected? a. mutualism
b. commensalism c. parasitism d. neutralism
Correct Answer: B
Question 4.
Which of the following describes Proteobacteria in domain Bacteria? a. phylum b. class c.
species d. genus
Correct Answer: A
Question 5.
All Alphaproteobacteria are which of the following? a. oligotrophs b. intracellular c.
pathogenic d. all of the above e. none of the above
Correct Answer: A
Question 6.
Class Betaproteobacteria includes all but which of the following genera? a. Neisseria. b.
Bordetella. c. Leptothrix. d. Campylobacter.
Correct Answer: D
,Question 7.
Haemophilus influenzae is a common cause of which of the following? a. influenza b.
dysentery c. upper respiratory tract infections d. hemophilia
Correct Answer: C
Question 8.
Which of the following is the organelle that spirochetes use to propel themselves? a.
plasma membrane b. axial filament c. pilum d. fimbria
Correct Answer: B
Question 9.
Which of the following bacteria are the most prevalent in the human gut? a. cyanobacteria
b. staphylococci c. Borrelia d. Bacteroides
Correct Answer: D
Question 10.
Which of the following refers to photosynthesis performed by bacteria with the use of
water as the donor of electrons? a. oxygenic b. anoxygenic c. heterotrophic d.
phototrophic
Correct Answer: A
Question 11.
Which of the following bacterial species is classified as high G+C gram-positive? a.
Corynebacterium diphtheriae b. Staphylococcus aureus c. Bacillus anthracis d.
Streptococcus pneumoni
Correct Answer: A
Question 12.
The term "deeply branching" refers to which of the following? a. the cellular shape of
deeply branching bacteria b. the position in the evolutionary tree of deeply branching
bacteria c. the ability of deeply branching bacteria to live in deep ocean waters d. the
pattern of growth in culture of deeply branching bacteria
Correct Answer: B
Question 13.
Which of these deeply branching bacteria is considered a polyextremophile? a. Aquifex
pyrophilus b. Deinococcus radiodurans c. Staphylococcus aureus d. Mycobacterium
tuberculosis
Correct Answer: B
, Question 14.
Archaea and Bacteria are most similar in terms of their ________. a. genetics b. cell wall
structure c. ecology d. unicellular structure
Correct Answer: D
Question 15.
Which of the following is true of archaea that produce methane? a. They reduce carbon
dioxide in the presence of nitrogen. b. They live in the most extreme environments. c.
They are always anaerobes. d. They have been discovered on Mars.
Correct Answer: B
Question 16.
Which genus includes the causative agent for malaria? a. Euglena b. Paramecium c.
Plasmodium d. Trypanosoma
Correct Answer: C
Question 17.
Which protist is a concern because of its ability to contaminate water supplies and cause
diarrheal illness? a. Plasmodium vivax b. Toxoplasma gondii c. Giardia lamblia d.
Trichomonas vaginalis
Correct Answer: C
Question 18.
A fluke is classified within which of the following? a. Nematoda b. Rotifera c.
Platyhelminthes d. Annelida
Correct Answer: C
Question 19.
A nonsegmented worm is found during a routine colonoscopy of an individual who
reported having abdominal cramps, nausea, and vomiting. This worm is likely which of the
following? a. nematode b. fluke c. trematode d. annelid
Correct Answer: A
Question 20.
A segmented worm has male and female reproductive organs in each segment. Some use
hooks to attach to the intestinal wall. Which type of worm is this? a. fluke b. nematode c.
cestode d. annelid
Correct Answer: C
