Question 1

Bergey's Manual of Systematic Bacteriology contains

Accepted Answer

A)  recipes for bacterial growth media. 
B)  treatments for bacterial diseases. 
C)  genetic sequences of prokaryotes. 
D)  rules for naming new bacterial species. 
E)  classification schemes for prokaryotes. 
A)  recipes for bacterial growth media. 
B)  treatments for bacterial diseases. 
C)  genetic sequences of prokaryotes. 
D)  rules for naming new bacterial species. 
E)  classification schemes for prokaryotes. E

Question 2

Gram negative facultative anaerobes that metabolize carbohydrates via glycolysis are members of the

Accepted Answer

A)  deltaproteobacteria. 
B)  gammaproteobacteria. 
C)  betaproteobacteria. 
D)  alphaproteobacteria. 
E)  epsilonproteobacteria. 
A)  deltaproteobacteria. 
B)  gammaproteobacteria. 
C)  betaproteobacteria. 
D)  alphaproteobacteria. 
E)  epsilonproteobacteria. B

Question 3

The are the largest known group of archaea.

Accepted Answer

A)  hyperthermophiles 
B)  methanogens 
C)  halophiles 
D)  cyanobacteria 
E)  thermophiles 
A)  hyperthermophiles 
B)  methanogens 
C)  halophiles 
D)  cyanobacteria 
E)  thermophiles B

Question 4

A microbiologist observes what appears to be a pink- staining long rod within the periplasmic space of a Gram- negative bacillus. What is this structure likely to be?

Accepted Answer

A)  Rickettsia 
B)  a heterocyst 
C)  Bdellovibrio 
D)  an endospore 
E)  Chlamydia 
A)  Rickettsia 
B)  a heterocyst 
C)  Bdellovibrio 
D)  an endospore 
E)  Chlamydia

Question 5

The include the genus Aquifex.

Accepted Answer

A)  proteobacteria 
B)  high G + C Gram- positive bacteria 
C)  deeply branching bacteria 
D)  clostridia 
E)  archaea 
A)  proteobacteria 
B)  high G + C Gram- positive bacteria 
C)  deeply branching bacteria 
D)  clostridia 
E)  archaea

Question 6

Mycoplasmas are named for the large quantities of mycolic acid in their cell walls.

Accepted Answer

A) True 
 B)False

Question 7

Heterocysts are found in

Accepted Answer

A)  chlamydias. 
B)  myxobacteria. 
C)  cyanobacteria. 
D)  alphaproteobacteria. 
E)  mycoplasmas. 
A)  chlamydias. 
B)  myxobacteria. 
C)  cyanobacteria. 
D)  alphaproteobacteria. 
E)  mycoplasmas.

Question 8

The members of the (alphaproteobacteria/gammaproteobacteria/actinomycetes) may alternate between a flagellated motile stage and a nonmotile stage attached by means of a prosthecae.

Accepted Answer

The answer of The members of the (alphaproteobacteria/gammaproteobacteria/actinomycetes) may alternate...

Question 9

The arrangement represented in the figure is typical of which of the following genera of bacteria?

Accepted Answer

A)  Escherichia 
B)  Corynebacterium 
C)  Bacillus 
D)  Streptococcus 
E)  Actinomyces 
A)  Escherichia 
B)  Corynebacterium 
C)  Bacillus 
D)  Streptococcus 
E)  Actinomyces

Question 10

Most of the methane produced by methanogens is oxidized by other types of bacteria before it affects the Earth's climate.

Accepted Answer

A) True 
 B)False

Question 11

Explain the significance of endospores.

Accepted Answer

Because an endospore can regenerate the

Question 12

Which of the following characteristics distinguish the archaea from the bacteria?

Accepted Answer

A)  cytoplasmic membrane lipids 
B)  16S ribosomal RNA (rRN
A)  sequences 
C)  cell wall composition 
D)  cell wall composition, cytoplasmic membrane lipids, and 16S rRNA sequences 
E)  the deoxyribonucleotides in the DNA 
A)  cytoplasmic membrane lipids 
B)  16S ribosomal RNA (rRN
A)  sequences 
C)  cell wall composition 
D)  cell wall composition, cytoplasmic membrane lipids, and 16S rRNA sequences 
E)  the deoxyribonucleotides in the DNA

Question 13

Cocci can be spherical as well as kidney- shaped.

Accepted Answer

A) True 
 B)False

Question 14

Members of the genus Chlamydia are

Accepted Answer

A)  intracellular parasites. 
B)  Gram- positive bacteria. 
C)  classified with the deeply branching bacteria. 
D)  endospore- formers. 
E)  thermophiles. 
A)  intracellular parasites. 
B)  Gram- positive bacteria. 
C)  classified with the deeply branching bacteria. 
D)  endospore- formers. 
E)  thermophiles.

Question 15

When an endospore germinates, it gives rise to two daughter cells called vegetative cells.

Accepted Answer

A) True 
 B)False

Question 16

The "giant" bacterium Epulopiscium reproduces by means of

Accepted Answer

A)  budding. 
B)  snapping division. 
C)  sexual reproduction. 
D)  viviparity. 
E)  binary fission. 
A)  budding. 
B)  snapping division. 
C)  sexual reproduction. 
D)  viviparity. 
E)  binary fission.

Question 17

A large number of Gram- negative human pathogens are members of the

Accepted Answer

A)  epsilonproteobacteria. 
B)  deltaproteobacteria. 
C)  gammaproteobacteria. 
D)  betaproteobacteria. 
E)  alphaproteobacteria. 
A)  epsilonproteobacteria. 
B)  deltaproteobacteria. 
C)  gammaproteobacteria. 
D)  betaproteobacteria. 
E)  alphaproteobacteria.

Question 18

Myxobacteria exhibit traits, such as cooperation and differentiation, not normally observed in prokaryotes.

Accepted Answer

A) True 
 B)False

Question 19

Many cyanobacteria carry out both oxygenic photosynthesis and nitrogen fixation, but oxygen inhibits nitrogen fixation. How do these cyanobacteria manage both processes?

Accepted Answer

A)  Nitrogen fixation is sequestered in special cells called heterocysts. 
B)  The processes are seasonal; photosynthesis occurs in summer and nitrogen fixation takes place in winter. 
C)  They trap the oxygen in special cells called heterocysts. 
D)  They have special membranous structures like chloroplasts to separate the processes within the cell. 
E)  They produce cells called akinetes for photosynthesis. 
A)  Nitrogen fixation is sequestered in special cells called heterocysts. 
B)  The processes are seasonal; photosynthesis occurs in summer and nitrogen fixation takes place in winter. 
C)  They trap the oxygen in special cells called heterocysts. 
D)  They have special membranous structures like chloroplasts to separate the processes within the cell. 
E)  They produce cells called akinetes for photosynthesis.

Question 20

Which of the following bacteria oxidize ammonia (NH3) to produce nitrate (NO3)?

Accepted Answer

A)  Rhizobium 
B)  Cyanobacter 
C)  Nitrobacter 
D)  Azospirillum 
E)  Nocardia 
A)  Rhizobium 
B)  Cyanobacter 
C)  Nitrobacter 
D)  Azospirillum 
E)  Nocardia

Exam 11: Characterizing and Classifying Prokaryotes

Bergey's Manual of Systematic Bacteriology contains

Gram negative facultative anaerobes that metabolize carbohydrates via glycolysis are members of the

The are the largest known group of archaea.

A microbiologist observes what appears to be a pink- staining long rod within the periplasmic space of a Gram- negative bacillus. What is this structure likely to be?

The include the genus Aquifex.

Mycoplasmas are named for the large quantities of mycolic acid in their cell walls.

Heterocysts are found in

The members of the (alphaproteobacteria/gammaproteobacteria/actinomycetes) may alternate between a flagellated motile stage and a nonmotile stage attached by means of a prosthecae.

The arrangement represented in the figure is typical of which of the following genera of bacteria?

Most of the methane produced by methanogens is oxidized by other types of bacteria before it affects the Earth's climate.

Explain the significance of endospores.

Which of the following characteristics distinguish the archaea from the bacteria?

Cocci can be spherical as well as kidney- shaped.

Members of the genus Chlamydia are

When an endospore germinates, it gives rise to two daughter cells called vegetative cells.

The "giant" bacterium Epulopiscium reproduces by means of

A large number of Gram- negative human pathogens are members of the

Myxobacteria exhibit traits, such as cooperation and differentiation, not normally observed in prokaryotes.

Many cyanobacteria carry out both oxygenic photosynthesis and nitrogen fixation, but oxygen inhibits nitrogen fixation. How do these cyanobacteria manage both processes?

Which of the following bacteria oxidize ammonia (NH3) to produce nitrate (NO3)?

A Brief History of Microbiology

The Chemistry of Microbiology

Cell Structure and Function

Microscopy, Staining, and Classification

Microbial Metabolism

Microbial Nutrition and Growth

Microbial Genetics

Recombinant Dna Technology

Controlling Microbial Growth in the Environment

Controlling Microbial Growth in the Body: Antimicrobial Drugs

Characterizing and Classifying Eukaryotes

Characterizing and Classifying Viruses, Viroids, and Prions

Infection, Infectious Disease, and Epidemiology

Innate Immunity

Adaptive Immunity

Immunization and Immune Testing

Immune Disorders

Pathogenic Gram-Positive Bacteria

Pathogenic Gram-Negative Cocci and Bacilli

Rickettsias, Chlamydias, Spirochetes, and Vibrios

Pathogenic Fungi

Parasitic Protozoa, Helminths, and Arthropod Vectors

Pathogenic Dna Viruses

Pathogenic Rna Viruses

Applied and Environmental Microbiology

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