TEST BANK FOR OPEXSTAX MICROBIOLOGY
QUESTIONS AND SOLUTIONS.ALL CHAPTERS
INCLUDED
Chapter 1: An Invisible World
* = Correct answer Multi
ple Choice
1. Yeasts are which of the following?
A. a type of algae
B. a type of protist
C. any unicellular microbe
D. unicellular fungi*
Difficulty: Moderate ASM Standar
d: 20
3. The cell walls of archaeans often contain which of the following substances?
A. cellulose
B. chitin
C. peptidoglycan
D. pseudopeptidoglycan*
ASM Standard: 20
4. Which of the following is not true of archaeans? A. Some species live on the human body.
B. They are genetically distinct from bacteria.
C. They are only found in extreme environments.*
D. They have substantial metabolic differences from bacteria.
Difficulty: Difficult AS
M Standard: 20
Page 1 of 1
,Which of the following is not true about the process of ferm
entation? A. It can help preserve foods, preventing spoila
ge.
B. It converts sugars to organic acids, alcohols, and/or gases such as carbon dioxide.
C. It is carried out exclusively by unicellular eukaryotes such as yeast.*
D. It is used to make foods such as cheese and bread.
Difficulty: Moderate AS
M Standard: 11, 23, 26
5. The Romans may have reduced their risk of waterborne infectious diseases by using w
hich of the following?
A. a variety of pharmaceutical products
B. aqueducts and a sewer system*
C. prophylactic antibiotics
D. quarantine of people with lepros
y Difficulty: Moderate
ASM Standard: 23
6. For which of the following is Thucydides known?
A. developing an effective sewer system in ancient Greece, helping to reduce levels
of disease in cities
B. observing microbes, using a microscope, for the first time, even distinguishing betw
een bacteria and fungi
C. proposing that disease was caused by microorganisms
D. realizing that people who had been infected by the Athenian plague had immunit
y to reinfection*
Difficulty: Moderate A
SM Standard: 23, 31
7. Ernst Haeckel proposed a classification system consisting of which of the follow
ing subgroups? A. five kingdoms
B. four kingdoms*
C. two domains and three kingdoms
D. two domains and five kingdoms
Difficulty: Moderate ASM Standar
d: N/A
Page 2 of 1
,8. Viruses not included in phylogenetic trees for which of the following reasons? A. It is
too difficult to observe their characteristics.
B. They are acellular and nonliving.*
C. They do not have any genes, which prevents genetic analysis.
D. They lack a nucleus.
Difficulty: Moderate ASM Standar
d: 5
9. Which is the best description of the primary purpose of a phylogeny? A. Phylogenies s
how all the alterative names for each species.
B. Phylogenies show all the common names for each species.
C. Phylogenies show evolutionary relatedness between organisms.*
D. Phylogenies show interactions between species in a shared habitat.
Difficulty: Moderate ASM Standar
d: 5
10. Current phylogenetic analyses include which of the following?
A. information from a range of sources, including morphological, genetic, and biochemi
cal data*
B. information on visible similarities only
C. information regarding how to classify organisms on the basis of external morphologi
cal characteristics and visible behaviors
D. varied morphological and structural characteristics, with preference for leaving histori
cal classifications to prevent confusion
Difficulty: Moderate ASM Standar
d: 5
11. Diatoms are classified within which of the following domains?
A. Archaea
B. Bacteria
C. Eukarya*
D. Prokaryota
Difficulty: Moderate ASM Standar
d: N/A
12. Horizontal gene transfer involves which of the following?
A. any transfer of genes in a laboratory setting
Page 3 of 1
, B. the- transfer- of- genes- from- a- virus- to- a- bacterium- or- vice- versa- but- not- any- other- for-
m-of-gene-transfer
C. the- transfer- of- genes- from- one- individual- to- another,- including- from- one- specie-
s-to-another,-but-not-from-parent-to-offspring*-D.-the-transfer-of-genes-from-p-
arent-to-offspring
Difficulty:-Moderat-
e-ASM-Standard:-2,-
4
13. Bacteria- are- generally- identified- to- species- by- using- which- of- the- following?
A. a- combination- of- genetic,- biochemical,- and- microscopic- approaches*
B. a- combination- of- microscopic- and- physiological- approaches,- but- not- genetics
C. primarily- characteristics- such- as- motility- that- can- be- visualized- using- microscopy
D. primarily- morphological- characteristics- of- individual- cells
Difficulty:-Moderate-A-
SM-Standard:-34,-36
14. For- taxonomic- classification- of- microbes,- serological- tests- typically- are- used- to- do- whic-
h-of-the-following?
A. determine- complete- genome- sequences- for- microbes
B. identify- proteins- on- the- basis- of- their- reaction- with- specific- antibodies*
C. run- analyses- to- identify- whether- particular- genes- are- present
D. visualize- microbial- external- morphology
Difficulty:-Moderate-A-
SM-Standard:-34,-36
Which-of-the-following-is-true-of-the-microbial-world?-A.-All-
microbes-are-harmful.
B.- Humans- could- survive- without- microbes.
C.- Many-microbes-are-helpful.*D.-Most-microbes-are-path-
ogenic.
Difficulty:- Easy
ASM- Standard:- 23,- 24
15. Which- of- the- following- is- when- humans- first- suspected- the- existence- of- microbes?
A. during- the- Industrial- Revolution
B. in- prehistoric- times*
C. in- the- last- century
Page- 4- of- 1
QUESTIONS AND SOLUTIONS.ALL CHAPTERS
INCLUDED
Chapter 1: An Invisible World
* = Correct answer Multi
ple Choice
1. Yeasts are which of the following?
A. a type of algae
B. a type of protist
C. any unicellular microbe
D. unicellular fungi*
Difficulty: Moderate ASM Standar
d: 20
3. The cell walls of archaeans often contain which of the following substances?
A. cellulose
B. chitin
C. peptidoglycan
D. pseudopeptidoglycan*
ASM Standard: 20
4. Which of the following is not true of archaeans? A. Some species live on the human body.
B. They are genetically distinct from bacteria.
C. They are only found in extreme environments.*
D. They have substantial metabolic differences from bacteria.
Difficulty: Difficult AS
M Standard: 20
Page 1 of 1
,Which of the following is not true about the process of ferm
entation? A. It can help preserve foods, preventing spoila
ge.
B. It converts sugars to organic acids, alcohols, and/or gases such as carbon dioxide.
C. It is carried out exclusively by unicellular eukaryotes such as yeast.*
D. It is used to make foods such as cheese and bread.
Difficulty: Moderate AS
M Standard: 11, 23, 26
5. The Romans may have reduced their risk of waterborne infectious diseases by using w
hich of the following?
A. a variety of pharmaceutical products
B. aqueducts and a sewer system*
C. prophylactic antibiotics
D. quarantine of people with lepros
y Difficulty: Moderate
ASM Standard: 23
6. For which of the following is Thucydides known?
A. developing an effective sewer system in ancient Greece, helping to reduce levels
of disease in cities
B. observing microbes, using a microscope, for the first time, even distinguishing betw
een bacteria and fungi
C. proposing that disease was caused by microorganisms
D. realizing that people who had been infected by the Athenian plague had immunit
y to reinfection*
Difficulty: Moderate A
SM Standard: 23, 31
7. Ernst Haeckel proposed a classification system consisting of which of the follow
ing subgroups? A. five kingdoms
B. four kingdoms*
C. two domains and three kingdoms
D. two domains and five kingdoms
Difficulty: Moderate ASM Standar
d: N/A
Page 2 of 1
,8. Viruses not included in phylogenetic trees for which of the following reasons? A. It is
too difficult to observe their characteristics.
B. They are acellular and nonliving.*
C. They do not have any genes, which prevents genetic analysis.
D. They lack a nucleus.
Difficulty: Moderate ASM Standar
d: 5
9. Which is the best description of the primary purpose of a phylogeny? A. Phylogenies s
how all the alterative names for each species.
B. Phylogenies show all the common names for each species.
C. Phylogenies show evolutionary relatedness between organisms.*
D. Phylogenies show interactions between species in a shared habitat.
Difficulty: Moderate ASM Standar
d: 5
10. Current phylogenetic analyses include which of the following?
A. information from a range of sources, including morphological, genetic, and biochemi
cal data*
B. information on visible similarities only
C. information regarding how to classify organisms on the basis of external morphologi
cal characteristics and visible behaviors
D. varied morphological and structural characteristics, with preference for leaving histori
cal classifications to prevent confusion
Difficulty: Moderate ASM Standar
d: 5
11. Diatoms are classified within which of the following domains?
A. Archaea
B. Bacteria
C. Eukarya*
D. Prokaryota
Difficulty: Moderate ASM Standar
d: N/A
12. Horizontal gene transfer involves which of the following?
A. any transfer of genes in a laboratory setting
Page 3 of 1
, B. the- transfer- of- genes- from- a- virus- to- a- bacterium- or- vice- versa- but- not- any- other- for-
m-of-gene-transfer
C. the- transfer- of- genes- from- one- individual- to- another,- including- from- one- specie-
s-to-another,-but-not-from-parent-to-offspring*-D.-the-transfer-of-genes-from-p-
arent-to-offspring
Difficulty:-Moderat-
e-ASM-Standard:-2,-
4
13. Bacteria- are- generally- identified- to- species- by- using- which- of- the- following?
A. a- combination- of- genetic,- biochemical,- and- microscopic- approaches*
B. a- combination- of- microscopic- and- physiological- approaches,- but- not- genetics
C. primarily- characteristics- such- as- motility- that- can- be- visualized- using- microscopy
D. primarily- morphological- characteristics- of- individual- cells
Difficulty:-Moderate-A-
SM-Standard:-34,-36
14. For- taxonomic- classification- of- microbes,- serological- tests- typically- are- used- to- do- whic-
h-of-the-following?
A. determine- complete- genome- sequences- for- microbes
B. identify- proteins- on- the- basis- of- their- reaction- with- specific- antibodies*
C. run- analyses- to- identify- whether- particular- genes- are- present
D. visualize- microbial- external- morphology
Difficulty:-Moderate-A-
SM-Standard:-34,-36
Which-of-the-following-is-true-of-the-microbial-world?-A.-All-
microbes-are-harmful.
B.- Humans- could- survive- without- microbes.
C.- Many-microbes-are-helpful.*D.-Most-microbes-are-path-
ogenic.
Difficulty:- Easy
ASM- Standard:- 23,- 24
15. Which- of- the- following- is- when- humans- first- suspected- the- existence- of- microbes?
A. during- the- Industrial- Revolution
B. in- prehistoric- times*
C. in- the- last- century
Page- 4- of- 1
