Question 1

The first prokaryotes appeared about ___ billion years ago.

Accepted Answer

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

Question 2

The study of the immune response to infection caused by microorganisms is

Accepted Answer

A)  hypersensitivity.
B)  epidemiology.
C)  immunology.
D)  morbidity.
E)  geomicrobiology.F) A) and D)
G) C) and E) C

Question 3

Which of the following is a scientific name?

Accepted Answer

A)  gram-positive streptococcus
B)  Staphlyococcus
C)  Streptococcus pyogenes
D)  anthrax
E)  StreptobacilliF) B) and E)
G) C) and E)

Question 4

One distinguishing characteristic of the archaebacteria is that they live in extreme environments.

Accepted Answer

A) True 
 B)False

Question 5

When assigning a scientific name to an organism,

Accepted Answer

A)  the species name is capitalized.
B)  the species name is placed first.
C)  the species name can be abbreviated.
D)  both genus and species names are capitalized.
E)  both genus and species names are italicized or underlined.F) A) and B)
G) C) and D)

Question 6

The number one worldwide infectious diseases are

Accepted Answer

A)  AIDS-related diseases.
B)  diarrheal diseases.
C)  malaria diseases.
D)  measles.
E)  respiratory diseases.F) B) and D)
G) A) and E)

Question 7

Which scientific name is written correctly?

Accepted Answer

A)  Staphylococcus aureus.
B)  staphylococcus aureus
C)  Staphylococcus Aureus
D)  Staphylococcus aureus
E)  S.aureusF) B) and C)
G) A) and E)

Question 8

All microorganisms are parasites.

Accepted Answer

A) True 
 B)False

Question 9

Which scientific field is involved in the identification,classification,and naming of organisms?

Accepted Answer

A)  nomenclature
B)  taxonomy
C)  phylogeny
D)  Woesean classificationE) A) and B)
F) A) and C)

Question 10

When humans manipulate the genes of microorganisms,the process is called

Accepted Answer

A)  bioremediation.
B)  genetic engineering.
C)  epidemiology.
D)  immunology.
E)  taxonomy.F) A) and B)
G) A) and C)

Question 11

All microorganisms are best defined as organisms that

Accepted Answer

A)  cause human disease.
B)  lack a cell nucleus.
C)  are infectious particles.
D)  are too small to be seen with the unaided eye.
E)  can only be found growing in laboratories.F) C) and D)
G) D) and E) D

Question 12

A scientist who constructs a hypothesis,tests its validity by outlining predicted events of the hypothesis,and conducts experiments to test for those events is using the _____ approach.

Accepted Answer

A)  Koch
B)  scientific method
C)  spontaneous generation
D)  taxonomicE) A) and B)
F) A) and C) B

Question 13

The scientist/s who proposed that organisms be assigned to one of three domains is/are

Accepted Answer

A)  Robert Koch and Louis Pasteur.
B)  Antonie van Leeuwenhoek.
C)  Carl Woese and George Fox.
D)  Robert Whittaker.
E)  Francesco Redi.F) B) and E)
G) B) and D)

Question 14

Which area of biology states that living things undergo gradual structural and functional changes over long periods of time?

Accepted Answer

A)  morphology
B)  phylogeny
C)  evolution
D)  genetics
E)  transformation.F) A) and E)
G) All of the above

Question 15

The term sterile means free of all life forms.

Accepted Answer

A) True 
 B)False

Question 16

The scientific method includes all of the following except

Accepted Answer

A)  hypothesis.
B)  experimentation.
C)  observation.
D)  publish.E) All of the above
F) A) and B)

Question 17

Sterile refers to

Accepted Answer

A)  pathogen-free.
B)  absence of spores.
C)  absence of any life forms and viral particles.
D)  pasteurized.
E)  homogenized.F) A) and E)
G) A) and D)

Question 18

Analysis of the small subunit rRNAs from all organisms in the three current domains suggests that

Accepted Answer

A)  the eukaryotes arose from prokaryotes.
B)  the Archaea are more closely related to eukaryotes than prokaryotes.
C)  all modern and extinct organisms on earth arose from a common ancestor.
D)  the prokarytoes,Archaea,and eukaryotes are not related. Refer to "Systems of Presenting a Universal Tree of Life" for a discussion of the ssu rRNAs and their role in taxonomy.E) A) and B)
F) None of the above

Question 19

Which group of microorganisms is composed only of hereditary material wrapped in a protein covering?

Accepted Answer

A)  viruses
B)  bacteria
C)  parasites
D)  fungi
E)  yeastsF) A) and D)
G) D) and E)

Question 20

Once an organism is assigned to a particular taxonomic hierarchy,it is permanent and cannot be revised.

Accepted Answer

A) True 
 B)False

Exam 1: The Main Themes of Microbiology

The first prokaryotes appeared about ___ billion years ago.

Correct AnswerverifiedShow Answer

The study of the immune response to infection caused by microorganisms is

Correct AnswerverifiedC

Which of the following is a scientific name?

Correct AnswerverifiedShow Answer

One distinguishing characteristic of the archaebacteria is that they live in extreme environments.

Correct AnswerverifiedShow Answer

When assigning a scientific name to an organism,

Correct AnswerverifiedShow Answer

The number one worldwide infectious diseases are

Correct AnswerverifiedShow Answer

Which scientific name is written correctly?

Correct AnswerverifiedShow Answer

All microorganisms are parasites.

Correct AnswerverifiedShow Answer

Which scientific field is involved in the identification,classification,and naming of organisms?

Correct AnswerverifiedShow Answer

When humans manipulate the genes of microorganisms,the process is called

Correct AnswerverifiedShow Answer

All microorganisms are best defined as organisms that

Correct AnswerverifiedD

A scientist who constructs a hypothesis,tests its validity by outlining predicted events of the hypothesis,and conducts experiments to test for those events is using the _____ approach.

Correct AnswerverifiedB

The scientist/s who proposed that organisms be assigned to one of three domains is/are

Correct AnswerverifiedShow Answer

Which area of biology states that living things undergo gradual structural and functional changes over long periods of time?

Correct AnswerverifiedShow Answer

The term sterile means free of all life forms.

Correct AnswerverifiedShow Answer

The scientific method includes all of the following except

Correct AnswerverifiedShow Answer

Sterile refers to

Correct AnswerverifiedShow Answer

Analysis of the small subunit rRNAs from all organisms in the three current domains suggests that

Correct AnswerverifiedShow Answer

Which group of microorganisms is composed only of hereditary material wrapped in a protein covering?

Correct AnswerverifiedShow Answer

Once an organism is assigned to a particular taxonomic hierarchy,it is permanent and cannot be revised.

Correct AnswerverifiedShow Answer

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C

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D

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B

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