Question 1

Which of the following genera is an anaerobic gram- negative rod?

Accepted Answer

A)  Treponema 
B)  Bacteroides 
C)  Escherichia 
D)  Staphylococcus 
E)  None of the above 
A)  Treponema 
B)  Bacteroides 
C)  Escherichia 
D)  Staphylococcus 
E)  None of the above

Question 2

The bacteria responsible for more infections and more different kinds of infections are

Accepted Answer

A)  Neisseria. 
B)  Staphylococcus. 
C)  Streptococcus. 
D)  Salmonella. 
E)  Pseudomonas. 
A)  Neisseria. 
B)  Staphylococcus. 
C)  Streptococcus. 
D)  Salmonella. 
E)  Pseudomonas.

Question 3

Which of the following pairs is mismatched?

Accepted Answer

A)  Actinomycetes - reproduce by fragmentation 
B)  Chemoautotrophic bacteria - fix atmospheric nitrogen 
C)  Archaea - live in extreme environments 
D)  Dissimilatory sulfate- reducing bacteria - produce H?S 
E)  Cytophaga - a gliding, nonfruiting bacterium 
A)  Actinomycetes - reproduce by fragmentation 
B)  Chemoautotrophic bacteria - fix atmospheric nitrogen 
C)  Archaea - live in extreme environments 
D)  Dissimilatory sulfate- reducing bacteria - produce H?S 
E)  Cytophaga - a gliding, nonfruiting bacterium

Question 4

Actinomycetes differ from fungi because actinomycetes

Accepted Answer

A)  Require light. 
B)  Are decomposers. 
C)  Lack a membrane- bounded nucleus. 
D)  Are chemoheterotrophs. 
E)  Cause disease. 
A)  Require light. 
B)  Are decomposers. 
C)  Lack a membrane- bounded nucleus. 
D)  Are chemoheterotrophs. 
E)  Cause disease.

Question 5

A primary difference between cyanobacteria and purple and green phototrophic bacteria is

Accepted Answer

A)  Energy source. 
B)  Color. 
C)  Cell wall type. 
D)  Electron donor for CO₂ reduction. 
E)  Cell type. 
A)  Energy source. 
B)  Color. 
C)  Cell wall type. 
D)  Electron donor for CO₂ reduction. 
E)  Cell type.

Question 6

Staphylococcus and Streptococcus can be easily differentiated in a laboratory by which one of the following?

Accepted Answer

A)  Gram stain reaction 
B)  Growth in high salt concentrations 
C)  Ability to cause disease 
D)  Cell shape 
E)  None of the above 
A)  Gram stain reaction 
B)  Growth in high salt concentrations 
C)  Ability to cause disease 
D)  Cell shape 
E)  None of the above

Question 7

Pathogenic bacteria are easily identified because they

Accepted Answer

A)  Produce endospores. 
B)  Are motile. 
C)  Are gram- negative. 
D)  Grow at 37°C. 
E)  None of the above. 
A)  Produce endospores. 
B)  Are motile. 
C)  Are gram- negative. 
D)  Grow at 37°C. 
E)  None of the above.

Question 8

Which of the following is a characteristic of Clostridium?

Accepted Answer

A)  Mycobacteria 
B)  Endospore- forming cocci 
C)  Gram- negative aerobic cocci 
D)  Anaerobic gram- negative rods 
E)  None of the above 
A)  Mycobacteria 
B)  Endospore- forming cocci 
C)  Gram- negative aerobic cocci 
D)  Anaerobic gram- negative rods 
E)  None of the above

Question 9

Which of the following is not a characteristic of the regular, nonsporing gram- positive rods?

Accepted Answer

A)  Aerotolerant 
B)  Don't produce endospores 
C)  Fermentative metabolism 
D)  Nonpathogenic 
E)  None of the above 
A)  Aerotolerant 
B)  Don't produce endospores 
C)  Fermentative metabolism 
D)  Nonpathogenic 
E)  None of the above

Question 10

Caulobacter are different from most bacteria because

Accepted Answer

A)  They have stalks. 
B)  They lack cell walls. 
C)  They are gram- negative. 
D)  They are gram- positive. 
E)  None of the above. 
A)  They have stalks. 
B)  They lack cell walls. 
C)  They are gram- negative. 
D)  They are gram- positive. 
E)  None of the above.

Question 11

Which one of the following does not belong with the others?

Accepted Answer

A)  Staphylococcus 
B)  Coxiella 
C)  Ehrlichia 
D)  Rickettsia 
E)  None of the above 
A)  Staphylococcus 
B)  Coxiella 
C)  Ehrlichia 
D)  Rickettsia 
E)  None of the above

Question 12

Which of the following do you expect to be most resistant to high temperatures?

Accepted Answer

A)  Staphylococcus aureus 
B)  Streptococcocus pyogenes 
C)  Eschericia coli 
D)  Neisseria gonorrhoeae 
E)  Bacillus subtilis 
A)  Staphylococcus aureus 
B)  Streptococcocus pyogenes 
C)  Eschericia coli 
D)  Neisseria gonorrhoeae 
E)  Bacillus subtilis

Question 13

Thiobacillus oxidizes inorganic sulfur compounds and reduces CO₂. This bacterium is

Accepted Answer

A)  A chemoautotroph 
B)  A photoautotroph 
C)  A chemoheterotroph 
D)  A gammaproteobacteria 
E)  None of the above. 
A)  A chemoautotroph 
B)  A photoautotroph 
C)  A chemoheterotroph 
D)  A gammaproteobacteria 
E)  None of the above.

Question 14

Which one of the following does not belong with the others?

Accepted Answer

A)  Campylobacter 
B)  Bordetella 
C)  Burkholderia 
D)  Pseudomonas 
E)  Salmonella 
A)  Campylobacter 
B)  Bordetella 
C)  Burkholderia 
D)  Pseudomonas 
E)  Salmonella

Question 15

You have isolated a bacterium that grows in a medium containing an organic substrate and nitrate in the absence of oxygen. The nitrate is reduced to nitrogen gas. This bacterium is

Accepted Answer

A)  A chemoautotroph. 
B)  Using anaerobic respiration. 
C)  A photoautotroph. 
D)  Gram- negative. 
E)  A photoheterotroph. 
A)  A chemoautotroph. 
B)  Using anaerobic respiration. 
C)  A photoautotroph. 
D)  Gram- negative. 
E)  A photoheterotroph.

Question 16

Which of the following is the best reason to classify Streptococcus in the Lactobacillales?

Accepted Answer

A)  Morphology 
B)  rRNA sequences 
C)  Gram reaction 
D)  Fermentation of lactose 
E)  All of the above. 
A)  Morphology 
B)  rRNA sequences 
C)  Gram reaction 
D)  Fermentation of lactose 
E)  All of the above.

Question 17

Rickettsias differ from chlamydias in that rickettsias

Accepted Answer

A)  Are gram- negative. 
B)  Are intracellular parasites. 
C)  Form elementary bodies. 
D)  Require an arthropod for transmission. 
E)  None of the above. 
A)  Are gram- negative. 
B)  Are intracellular parasites. 
C)  Form elementary bodies. 
D)  Require an arthropod for transmission. 
E)  None of the above.

Question 18

You have isolated a prokaryotic cell. The first step in identification is a(n)

Accepted Answer

A)  Flagella stain. 
B)  Gram stain. 
C)  Endospore stain. 
D)  DNA fingerprint. 
E)  Lactose fermentation test. 
A)  Flagella stain. 
B)  Gram stain. 
C)  Endospore stain. 
D)  DNA fingerprint. 
E)  Lactose fermentation test.

Question 19

Which of the following is not gram- negative?

Accepted Answer

A)  Bacteroides 
B)  Pseudomonas 
C)  Rickettsia 
D)  Salmonella 
E)  Streptococcus 
A)  Bacteroides 
B)  Pseudomonas 
C)  Rickettsia 
D)  Salmonella 
E)  Streptococcus

Question 20

All of the following are true about the causative agent of Rocky Mountain spotted fever except

Accepted Answer

A)  It is gram- negative. 
B)  It is found in soil and water. 
C)  It is an intracellular parasite. 
D)  It is transmitted by ticks. 
E)  It is in the genus Rickettsia. 
A)  It is gram- negative. 
B)  It is found in soil and water. 
C)  It is an intracellular parasite. 
D)  It is transmitted by ticks. 
E)  It is in the genus Rickettsia.

Exam 11: The Prokaryotes: Domains Bacteria and Archaea

Which of the following genera is an anaerobic gram- negative rod?

The bacteria responsible for more infections and more different kinds of infections are

Which of the following pairs is mismatched?

Actinomycetes differ from fungi because actinomycetes

A primary difference between cyanobacteria and purple and green phototrophic bacteria is

Staphylococcus and Streptococcus can be easily differentiated in a laboratory by which one of the following?

Pathogenic bacteria are easily identified because they

Which of the following is a characteristic of Clostridium?

Which of the following is not a characteristic of the regular, nonsporing gram- positive rods?

Caulobacter are different from most bacteria because

Which one of the following does not belong with the others?

Which of the following do you expect to be most resistant to high temperatures?

Thiobacillus oxidizes inorganic sulfur compounds and reduces CO₂. This bacterium is

Which one of the following does not belong with the others?

You have isolated a bacterium that grows in a medium containing an organic substrate and nitrate in the absence of oxygen. The nitrate is reduced to nitrogen gas. This bacterium is

Which of the following is the best reason to classify Streptococcus in the Lactobacillales?

Rickettsias differ from chlamydias in that rickettsias

You have isolated a prokaryotic cell. The first step in identification is a(n)

Which of the following is not gram- negative?

All of the following are true about the causative agent of Rocky Mountain spotted fever except

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