Question 1

You have isolated a gram- positive rod. What should you do next?

Accepted Answer

A)  Lactose fermentation 
B)  Flagella stain 
C)  Enterotube 
D)  Gram stain 
E)  Endospore stain 
A)  Lactose fermentation 
B)  Flagella stain 
C)  Enterotube 
D)  Gram stain 
E)  Endospore stain E

Question 2

You have isolated an aerobic gram- positive, endospore- forming bacterium that grows wells on nutrient agar. To which of the following groups does it most likely belong?

Accepted Answer

A)  Deltaproteobacteria 
B)  Phototrphic bacteria 
C)  Bacillales 
D)  Gammaproteobacteria 
E)  Can't tell 
A)  Deltaproteobacteria 
B)  Phototrphic bacteria 
C)  Bacillales 
D)  Gammaproteobacteria 
E)  Can't tell C

Question 3

Which of the following are found primarily in the intestines of humans?

Accepted Answer

A)  Facultatively anaerobic gram- negative rods 
B)  Aerobic, helical bacteria 
C)  Gram- positive cocci 
D)  Gram- negative aerobic rods and cocci 
E)  None of the above 
A)  Facultatively anaerobic gram- negative rods 
B)  Aerobic, helical bacteria 
C)  Gram- positive cocci 
D)  Gram- negative aerobic rods and cocci 
E)  None of the above A

Question 4

Which of the following is not a characteristic of spirochetes?

Accepted Answer

A)  Gram- negative 
B)  Easily observed with brightfield microscopy 
C)  Possess an axial filament 
D)  Helical shape 
E)  Difficult to culture in vitro 
A)  Gram- negative 
B)  Easily observed with brightfield microscopy 
C)  Possess an axial filament 
D)  Helical shape 
E)  Difficult to culture in vitro

Question 5

Borrelia is classified as a spirochete because it

Accepted Answer

A)  Is a pathogen. 
B)  Is aerobic. 
C)  Possesses an axial filament. 
D)  Is a rod. 
E)  None of the above. 
A)  Is a pathogen. 
B)  Is aerobic. 
C)  Possesses an axial filament. 
D)  Is a rod. 
E)  None of the above.

Question 6

You have isolated a bacterium that grows in a medium containing only inorganic nutrients. Ammonia is oxidized to nitrate ion. This bacterium is

Accepted Answer

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

Question 7

Escherichia coli belongs to the

Accepted Answer

A)  Actinomycetes. 
B)  Spirochetes. 
C)  Green sulfur bacteria. 
D)  Proteobacteria. 
E)  Gram- positive bacteria. 
A)  Actinomycetes. 
B)  Spirochetes. 
C)  Green sulfur bacteria. 
D)  Proteobacteria. 
E)  Gram- positive bacteria.

Question 8

Which of the following lacks a cell wall?

Accepted Answer

A)  Clostridium 
B)  Mycobacterium 
C)  Nocardia 
D)  Mycoplasma 
E)  Borrelia 
A)  Clostridium 
B)  Mycobacterium 
C)  Nocardia 
D)  Mycoplasma 
E)  Borrelia

Question 9

Which of the following is not an enteric?

Accepted Answer

A)  Enterobacter 
B)  Escherichia 
C)  Salmonella 
D)  Campylobacter 
E)  Shigella 
A)  Enterobacter 
B)  Escherichia 
C)  Salmonella 
D)  Campylobacter 
E)  Shigella

Question 10

Salmonella, Shigella, Yersinia, and Serratia are all

Accepted Answer

A)  Gram- positive aerobic cocci. 
B)  Pathogens. 
C)  Gram- negative facultatively anaerobic rods. 
D)  Fermentative. 
E)  None of the above. 
A)  Gram- positive aerobic cocci. 
B)  Pathogens. 
C)  Gram- negative facultatively anaerobic rods. 
D)  Fermentative. 
E)  None of the above.

Question 11

Which of the following does not belong with the others?

Accepted Answer

A)  Methanobacterium 
B)  Sulfolobus 
C)  Staphylococcus 
D)  Halobacterium 
E)  Halococcus 
A)  Methanobacterium 
B)  Sulfolobus 
C)  Staphylococcus 
D)  Halobacterium 
E)  Halococcus

Question 12

Which of the following pairs is mismatched?

Accepted Answer

A)  Mycobacteria - acid- fast 
B)  Aerobic, helical bacteria - gram- negative 
C)  Spirochete - axial filament 
D)  Enterics - gram- negative 
E)  None of the above 
A)  Mycobacteria - acid- fast 
B)  Aerobic, helical bacteria - gram- negative 
C)  Spirochete - axial filament 
D)  Enterics - gram- negative 
E)  None of the above

Question 13

Streptomyces differs from Actinomyces because Streptomyces

Accepted Answer

A)  Is aerobic. 
B)  Produces conidia. 
C)  Forms filaments. 
D)  Makes antibiotics. 
E)  None of the above. 
A)  Is aerobic. 
B)  Produces conidia. 
C)  Forms filaments. 
D)  Makes antibiotics. 
E)  None of the above.

Question 14

Which of the following form conidiospores?

Accepted Answer

A)  Rickettsias 
B)  Spiral and curved bacteria 
C)  Actinomycetes and related organisms 
D)  Anaerobic gram- negative cocci 
E)  Endospore- forming gram- positive rods and cocci 
A)  Rickettsias 
B)  Spiral and curved bacteria 
C)  Actinomycetes and related organisms 
D)  Anaerobic gram- negative cocci 
E)  Endospore- forming gram- positive rods and cocci

Question 15

What should you do if you suspect a patient has tuberculosis?

Accepted Answer

A)  Look at a wet mount. 
B)  An acid- fast stain. 
C)  A Gram stain. 
D)  Check for motility. 
A)  Look at a wet mount. 
B)  An acid- fast stain. 
C)  A Gram stain. 
D)  Check for motility.

Question 16

Which of the following is not a characteristic of Neisseria?

Accepted Answer

A)  Oxidase- positive 
B)  Cocci 
C)  Requires X and V factors 
D)  Gram- negative 
E)  None of the above 
A)  Oxidase- positive 
B)  Cocci 
C)  Requires X and V factors 
D)  Gram- negative 
E)  None of the above

Question 17

The nonsulfur photosynthetic bacteria use organic compounds as

Accepted Answer

A)  Electron donors to reduce CO?. 
B)  Energy sources. 
C)  Carbon sources. 
D)  Electron acceptors. 
E)  All of the above. 
A)  Electron donors to reduce CO?. 
B)  Energy sources. 
C)  Carbon sources. 
D)  Electron acceptors. 
E)  All of the above.

Question 18

Which of the following is not gram- positive?

Accepted Answer

A)  Mycobacterium 
B)  Bacillus 
C)  Staphylococcus 
D)  Treponema 
E)  Corynebacterium 
A)  Mycobacterium 
B)  Bacillus 
C)  Staphylococcus 
D)  Treponema 
E)  Corynebacterium

Question 19

All of the following are gram- positive. Which does not belong with the others?

Accepted Answer

A)  Listeria 
B)  Corynebacterium 
C)  Mycobacterium 
D)  Actinomyces 
E)  Bacillus 
A)  Listeria 
B)  Corynebacterium 
C)  Mycobacterium 
D)  Actinomyces 
E)  Bacillus

Question 20

Requirements for X and V factors are used to identify

Accepted Answer

A)  Neisseria. 
B)  Haemophilus. 
C)  Staphylococcus. 
D)  Escherichia. 
E)  None of the above. 
A)  Neisseria. 
B)  Haemophilus. 
C)  Staphylococcus. 
D)  Escherichia. 
E)  None of the above.

Exam 11: The Prokaryotes: Domains Bacteria and Archaea

You have isolated a gram- positive rod. What should you do next?

You have isolated an aerobic gram- positive, endospore- forming bacterium that grows wells on nutrient agar. To which of the following groups does it most likely belong?

Which of the following are found primarily in the intestines of humans?

Which of the following is not a characteristic of spirochetes?

Borrelia is classified as a spirochete because it

You have isolated a bacterium that grows in a medium containing only inorganic nutrients. Ammonia is oxidized to nitrate ion. This bacterium is

Escherichia coli belongs to the

Which of the following lacks a cell wall?

Which of the following is not an enteric?

Salmonella, Shigella, Yersinia, and Serratia are all

Which of the following does not belong with the others?

Which of the following pairs is mismatched?

Streptomyces differs from Actinomyces because Streptomyces

Which of the following form conidiospores?

What should you do if you suspect a patient has tuberculosis?

Which of the following is not a characteristic of Neisseria?

The nonsulfur photosynthetic bacteria use organic compounds as

Which of the following is not gram- positive?

All of the following are gram- positive. Which does not belong with the others?

Requirements for X and V factors are used to identify

The Microbial World and You

Chemical Principles

Observing Microorganisms Through a Microscope

Functional Anatomy of Prokaryotic and Eukaryotic Cells

Microbial Metabolism

Microbial Growth

The Control of Microbial Growth

Microbial Genetics

Biotechnology and Recombinant DNA

Classification of Microorganisms

The Eukaryotes: Fungi, Algae, Protozoa, and Helminths

Viruses, Viroids, and Prions

Principles of Disease and Epidemiology

Microbial Mechanisms of Pathogenicity

Innate Immunity: Nonspecific Defenses of the Host

Adaptive Immunity: Specific Defenses of the Host

Practical Applications of Immunology

Disorders Associated With the Immune System

Antimicrobial Drugs

Microbial Diseases of the Skin and Eyes

Microbial Diseases of the Nervous System

Microbial Diseases of the Cardiovascular and Lymphatic Systems

Microbial Diseases of the Respiratory System

Microbial Diseases of the Digestive System

Microbial Diseases of the Urinary and Reproductive Systems

Environmental Microbiology

Applied and Industrial Microbiology

Filters