Question 1

Which of the following is/are true of the sheath of Leptothrix?

Accepted Answer

A) Attaches bacteria to surfaces 
B) May contain ferric and manganic oxides 
C) Helps protect against microbial predators 
D) All of the choices are correct. 
A) Attaches bacteria to surfaces 
B) May contain ferric and manganic oxides 
C) Helps protect against microbial predators 
D) All of the choices are correct.

Question 2

The genus Desulfovibrio

Accepted Answer

A) is a strict anaerobe. 
B) uses sulfate as a terminal electron acceptor during anaerobic respiration. 
C) produces H2S. 
D) All of the choices are correct. 
A) is a strict anaerobe. 
B) uses sulfate as a terminal electron acceptor during anaerobic respiration. 
C) produces H2S. 
D) All of the choices are correct.

Question 3

Members of the genus Pseudomonas

Accepted Answer

A) are aerobes that mineralize a wide variety of organic compounds. 
B) are obligate intracellular parasites. 
C) form cysts when starved for nutrients. 
D) perform anaerobic photosynthesis. 
A) are aerobes that mineralize a wide variety of organic compounds. 
B) are obligate intracellular parasites. 
C) form cysts when starved for nutrients. 
D) perform anaerobic photosynthesis.

Question 4

Bacteria that naturally exhibit bioluminescence have been found in which of the following genera?

Accepted Answer

A) Vibrio 
B) Shigella 
C) Pasteurella 
D) Pseudomonas 
A) Vibrio 
B) Shigella 
C) Pasteurella 
D) Pseudomonas

Question 5

Helicobacter pylori is responsible for ______.

Accepted Answer

A) pneumonia 
B) cholera 
C) dysentery 
D) peptic ulcer disease 
A) pneumonia 
B) cholera 
C) dysentery 
D) peptic ulcer disease

Question 6

Members of the genus Salmonella are common causes of ______.

Accepted Answer

A) gastroenteritis 
B) pneumonia 
C) meningitis 
D) urinary tract infections 
A) gastroenteritis 
B) pneumonia 
C) meningitis 
D) urinary tract infections

Question 7

Sheaths of the bacterium Sphaerotilus are tubelike structures that are in intimate contact with the chain of cells that they enclose.

Accepted Answer

A) True 
 B)False

Question 8

The enzyme formate dehydrogenase (FDH)splits formic acid to H2 and CO2 and is crucial to survival during fermentation because if fermentive intermediates were allowed to accumulate within the cell,the internal pH would become far too _______ to support viability.

Accepted Answer

A) hypertonic 
B) acidic 
C) hypotonic 
D) alkaline 
A) hypertonic 
B) acidic 
C) hypotonic 
D) alkaline

Question 9

An appendage that is an extension of the bacterial cell wall and plasma membrane is a(n)______.

Accepted Answer

A) flagellum 
B) prostheca 
C) pilus 
D) mycelium 
A) flagellum 
B) prostheca 
C) pilus 
D) mycelium

Question 10

Although discussed with the bacteria,Rickettsias are small obligate intracellular parasites and are therefore more properly classified as viruses.

Accepted Answer

A) True 
 B)False

Question 11

The stalk of Caulobacter increases in the surface area of the cell,which facilitates absorption of nutrients from nutrient poor environments.

Accepted Answer

A) True 
 B)False

Question 12

Most myxobacteria

Accepted Answer

A) are micropredators because they secrete digestive enzymes that lyse bacteria and yeasts. 
B) have the ability to aggregate and form a fruiting body under conditions of nutrient limitation. 
C) produce desiccation resistant dormant myxospores. 
D) All of the choices are correct. 
A) are micropredators because they secrete digestive enzymes that lyse bacteria and yeasts. 
B) have the ability to aggregate and form a fruiting body under conditions of nutrient limitation. 
C) produce desiccation resistant dormant myxospores. 
D) All of the choices are correct.

Question 13

Members of the genus Thiothrix are sheathed bacteria that can replicate by releasing gonidia from the open end of the sheath.

Accepted Answer

A) True 
 B)False

Question 14

Burkholderia cepacia and Pseudomonas aeruginosa can be a particular problem with ______.

Accepted Answer

A) pneumonia patients 
B) decay of iron pipes under anaerobic conditions 
C) myasthenia gravis patients 
D) cystic fibrosis patients 
A) pneumonia patients 
B) decay of iron pipes under anaerobic conditions 
C) myasthenia gravis patients 
D) cystic fibrosis patients

Question 15

Species of Shewanella,Geobacter,and some cyanobacteria have evolved a strategy to enable their use of insoluble compounds as electron acceptors: the production of electrically conductive _______ that transfer electrons from the terminal point in the ETC to a metal surface.
or
or

Accepted Answer

nanowires

Question 16

Which of the following is NOT correct regarding the purple photosynthetic bacteria photosynthetic apparatus?

Accepted Answer

A) Apparatus is straight to decrease surface area and contain reactions 
B) Performs anoxygenic photosynthesis 
C) Possesses bacteriochlorophylls a or b 
D) Apparatus is continuous with the plasma membrane 
E) Has intracytoplasmic membranes (ICMs)to provide space for photosynthetic units (PSUs) 
A) Apparatus is straight to decrease surface area and contain reactions 
B) Performs anoxygenic photosynthesis 
C) Possesses bacteriochlorophylls a or b 
D) Apparatus is continuous with the plasma membrane 
E) Has intracytoplasmic membranes (ICMs)to provide space for photosynthetic units (PSUs)

Question 17

In the genus Caulobacter,asymmetric transverse fission produces a flagellated that adheres to surfaces.

Accepted Answer

The answer of In the genus Caulobacter,asymmetric transverse fission produces...

Question 18

Methylotrophic bacteria

Accepted Answer

A) are strict anaerobes. 
B) use reduced one-carbon compounds as their main source of carbon. 
C) are members of the Archaea based on 16S rRNA sequencing. 
D) produce methane as a by-product of their metabolism. 
A) are strict anaerobes. 
B) use reduced one-carbon compounds as their main source of carbon. 
C) are members of the Archaea based on 16S rRNA sequencing. 
D) produce methane as a by-product of their metabolism.

Question 19

When using as an electron donor.

Accepted Answer

nitrate de

Question 20

Which of the following is not true about Methylococcus and Methylomonas?

Accepted Answer

A) They are strict anaerobes. 
B) Most species are capable of forming cysts. 
C) They contain complex arrays of intracellular membranes when using methane. 
D) All of the choices are correct. 
A) They are strict anaerobes. 
B) Most species are capable of forming cysts. 
C) They contain complex arrays of intracellular membranes when using methane. 
D) All of the choices are correct.

Exam 22: The Proteobacteria

Which of the following is/are true of the sheath of Leptothrix?

The genus Desulfovibrio

Members of the genus Pseudomonas

Bacteria that naturally exhibit bioluminescence have been found in which of the following genera?

Helicobacter pylori is responsible for ______.

Members of the genus Salmonella are common causes of ______.

Sheaths of the bacterium Sphaerotilus are tubelike structures that are in intimate contact with the chain of cells that they enclose.

The enzyme formate dehydrogenase (FDH)splits formic acid to H2 and CO2 and is crucial to survival during fermentation because if fermentive intermediates were allowed to accumulate within the cell,the internal pH would become far too _______ to support viability.

An appendage that is an extension of the bacterial cell wall and plasma membrane is a(n)______.

Although discussed with the bacteria,Rickettsias are small obligate intracellular parasites and are therefore more properly classified as viruses.

The stalk of Caulobacter increases in the surface area of the cell,which facilitates absorption of nutrients from nutrient poor environments.

Most myxobacteria

Members of the genus Thiothrix are sheathed bacteria that can replicate by releasing gonidia from the open end of the sheath.

Burkholderia cepacia and Pseudomonas aeruginosa can be a particular problem with ______.

Species of Shewanella,Geobacter,and some cyanobacteria have evolved a strategy to enable their use of insoluble compounds as electron acceptors: the production of electrically conductive _______ that transfer electrons from the terminal point in the ETC to a metal surface. or or

Which of the following is NOT correct regarding the purple photosynthetic bacteria photosynthetic apparatus?

In the genus Caulobacter,asymmetric transverse fission produces a flagellated that adheres to surfaces.

Methylotrophic bacteria

When using as an electron donor.

Which of the following is not true about Methylococcus and Methylomonas?

The Evolution of Microorganisms and Microbiology

Microscopy

Bacterial Cell Structure

Archaeal Cell Structure

Eukaryotic Cell Structure

Viruses and Other Acellular Infectious Agents

Microbial Growth

Control of Microorganisms in the Environment

Antimicrobial Chemotherapy

Introduction to Metabolism

Catabolism: Energy Release and Conservation

Anabolism: the Use of Energy in Biosynthesis

Bacterial Genome Replication and Expression

Regulation of Bacterial Cellular Processes

Eukaryotic and Archaeal Genome Replication and Expression

Mechanisms of Genetic Variation

Recombinant DNA Technology

Microbial Genomics

Microbial Taxonomy and the Evolution of Diversity

Archaea

The Deinococci, Mollicutes, and Nonproteobacterial Gram-Negative Bacteria

Firmicutes: The Low G-C Gram-Positive Bacteria

Actinobacteria: the High G-C Gram-Positive Bacteria

Protists

Fungi Eumycota

Viruses

Biogeochemical Cycling and Global Climate Change

Methods in Microbial Ecology

Microorganisms in Marine and Freshwater Ecosystems

Microorganisms in Terrestrial Ecosystems

Microbial Interactions

Innate Host Resistance

Adaptive Immunity

Pathogenicity and Infection

Clinical Microbiology and Immunology

Epidemiology and Public Health Microbiology

Human Diseases Caused by Viruses and Prions

Human Diseases Caused by Bacteria

Human Diseases Caused by Fungi and Protists

Microbiology of Food

Biotechnology and Industrial Microbiology

Applied Environmental Microbiology

Filters

The enzyme formate dehydrogenase (FDH)splits formic acid to H₂ and CO₂ and is crucial to survival during fermentation because if fermentive intermediates were allowed to accumulate within the cell,the internal pH would become far too _______ to support viability.