Question 1

Which of the following is a traditional human use of microorganisms?

Accepted Answer

A)  Baking bread
B)  Cleaning up oil spills
C)  Treating water and sewage
D)  Mass-producing antibioticsE) B) and C)
F) None of the above

Question 2

Many chronic infections are caused by microbes that associate in communities termed ______.

Accepted Answer

A)  biofilms
B)  virions
C)  microbiota
D)  sedimentsE) B) and D)
F) A) and C)

Question 3

Which of the following are not considered microorganisms?

Accepted Answer

A)  Fungi
B)  Protozoa
C)  Viruses
D)  Bacteria
E)  MosquitoesF) A) and B)
G) A) and C)

Question 4

Helminths are ______.

Accepted Answer

A)  molds
B)  parasitic worms
C)  bacteria
D)  protozoa
E)  infectious particlesF) B) and E)
G) B) and C)

Question 5

A scientist studying the sequence of nucleotides in the rRNA of a bacterial species is working on

Accepted Answer

A)  recombinant DNA.
B)  nomenclature.
C)  determining evolutionary relatedness.
D)  bioremediation.
E)  determining if that species is the cause of a new disease.F) C) and D)
G) None of the above

Question 6

Studies of the immune response to an infection caused by microorganisms would be performed by a(n)  ______.

Accepted Answer

A)  hypersensitivity specialist
B)  immunologist
C)  geomicrobiologist
D)  epidemiologistE) B) and D)
F) A) and B)

Question 7

The three cell types discussed, eukaryotes, archaea, and bacteria, all derived from ______.

Accepted Answer

A)  cells with a true nucleus
B)  the last universal common ancestor
C)  photosynthetic bacteria
D)  archaeaE) A) and C)
F) A) and B)

Question 8

The microorganisms that recycle nutrients by breaking down dead matter and wastes are called ______.

Accepted Answer

A)  fermenters
B)  eukaryotes
C)  decomposers
D)  pathogens
E)  prokaryotesF) A) and C)
G) C) and D)

Question 9

Eukaryotic cells are larger than bacterial or archaeal cells; all cells are larger than macromolecules.Where do viruses fit on this scale?

Accepted Answer

A)  Viruses are smaller than eukaryotic cells, but larger than bacterial or archaeal cells.
B)  Viruses are smaller than macromolecules.
C)  Viruses are larger than eukaryotic cells.
D)  Viruses are smaller than bacterial or archaeal cells, but larger than macromolecules.E) None of the above
F) B) and D)

Question 10

The names of the three proposed domains are: Bacteria, Protista, and Eukarya.

Accepted Answer

A) True 
 B)False

Question 11

The first cells appeared about ___ billion years ago.

Accepted Answer

A)  5
B)  4.5
C)  3.5
D)  2
E)  1F) A) and D)
G) C) and E)

Question 12

In which way are archaea and eukaryotes the same?

Accepted Answer

A)  Have a cell wall for rigidity
B)  Can use flagella for movement
C)  Contain mitochondria for energy production
D)  Contain membrane-bound organellesE) A) and B)
F) B) and C)

Question 13

A recently-developed mnemonic for remembering the taxonomic levels from Domain to Species is "Dumb Kids Prefer Candy Over Fancy Green Salad." The word "candy" here is a reminder of the taxonomic level of _______.

Accepted Answer

A)  chain
B)  culture
C)  category
D)  colony
E)  classF) A) and D)
G) D) and E)

Question 14

Koch's postulates are criteria used to establish that

Accepted Answer

A)  microbes are found on dust particles.
B)  a specific microbe should be classified in a specific kingdom.
C)  microbes can be used to clean up toxic spills.
D)  a specific microbe is the cause of a specific disease.
E)  life forms can only arise from preexisting life forms.F) None of the above
G) B) and C)

Question 15

The number one worldwide infectious diseases are ______.

Accepted Answer

A)  AIDS-related diseases
B)  malaria and other protozoan diseases
C)  respiratory diseases
D)  measles and other rash diseases
E)  diarrheal diseasesF) B) and D)
G) B) and E)

Question 16

Among the types of microorganisms, the ______ are noncellular.

Accepted Answer

A)  protozoans
B)  bacteria
C)  viruses
D)  helminthsE) None of the above
F) B) and D)

Question 17

Select the correct descending taxonomic hierarchy (left to right) .

Accepted Answer

A)  Class, phylum, order
B)  Family, genus, species
C)  Kingdom, domain, phylum
D)  Family, order, class
E)  Genus, species, familyF) A) and E)
G) A) and B)

Question 18

Sterile refers to ______.

Accepted Answer

A)  homogenized
B)  absence of any life forms and viral particles
C)  pathogen-free
D)  pasteurized
E)  absence of sporesF) None of the above
G) A) and C)

Question 19

The sum total of all the microbes in a certain environment is termed the ______.

Accepted Answer

A)  microbiome
B)  microbial niche
C)  domain
D)  biofilm
E)  phylogenyF) B) and E)
G) A) and B)

Question 20

The smallest and most significant taxon is a ______.

Accepted Answer

A)  kingdom
B)  phylum
C)  species
D)  family
E)  genusF) A) and D)
G) A) and C)

Exam 1: The Main Themes of Microbiology

A recently-developed mnemonic for remembering the taxonomic levels from Domain to Species is "Dumb Kids Prefer Candy Over Fancy Green Salad." The word "candy" here is a reminder of the taxonomic level of _______.

Correct AnswerverifiedShow Answer

In which way are archaea and eukaryotes the same?

Correct AnswerverifiedShow Answer

The three cell types discussed, eukaryotes, archaea, and bacteria, all derived from ______.

Correct AnswerverifiedShow Answer

Select the correct descending taxonomic hierarchy (left to right) .

Correct AnswerverifiedShow Answer

A scientist studying the sequence of nucleotides in the rRNA of a bacterial species is working on

Correct AnswerverifiedShow Answer

Studies of the immune response to an infection caused by microorganisms would be performed by a(n) ______.

Correct AnswerverifiedShow Answer

Eukaryotic cells are larger than bacterial or archaeal cells; all cells are larger than macromolecules.Where do viruses fit on this scale?

Correct AnswerverifiedShow Answer

Which of the following is a traditional human use of microorganisms?

Correct AnswerverifiedShow Answer

Among the types of microorganisms, the ______ are noncellular.

Correct AnswerverifiedShow Answer

The number one worldwide infectious diseases are ______.

Correct AnswerverifiedShow Answer

The microorganisms that recycle nutrients by breaking down dead matter and wastes are called ______.

Correct AnswerverifiedShow Answer

Helminths are ______.

Correct AnswerverifiedShow Answer

Sterile refers to ______.

Correct AnswerverifiedShow Answer

Which of the following are not considered microorganisms?

Correct AnswerverifiedShow Answer

The smallest and most significant taxon is a ______.

Correct AnswerverifiedShow Answer

Koch's postulates are criteria used to establish that

Correct AnswerverifiedShow Answer

The first cells appeared about ___ billion years ago.

Correct AnswerverifiedShow Answer

The sum total of all the microbes in a certain environment is termed the ______.

Correct AnswerverifiedShow Answer

The names of the three proposed domains are: Bacteria, Protista, and Eukarya.

Correct AnswerverifiedShow Answer

Many chronic infections are caused by microbes that associate in communities termed ______.

Correct AnswerverifiedShow Answer

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