Question 1

As proteins are found in various subcellular fractions, how could they be further analyzed?

Accepted Answer

A proteomic approach to knowing about th

Question 2

Efflux pumps send antibiotics, such as the protein synthesis-inhibitor tetracycline, out of the bacterial cells, enabling them to grow in the presence of antibiotics. Which of the following therapeutic approaches will be LEAST effective?

Accepted Answer

A)  Switch to an antibiotic that is not a substrate of the efflux pump. 
B)  Augment the treatment with an efflux inhibitor. 
C)  Increase the concentration of tetracycline. 
D)  Augment the treatment with an ATP synthase inhibitor. 
E)  Add a second antibiotic to the therapy. 
A)  Switch to an antibiotic that is not a substrate of the efflux pump. 
B)  Augment the treatment with an efflux inhibitor. 
C)  Increase the concentration of tetracycline. 
D)  Augment the treatment with an ATP synthase inhibitor. 
E)  Add a second antibiotic to the therapy.

Question 3

What unusual lipids are found in mycobacteria, and of what benefit are they to these bacteria?

Accepted Answer

Mycobacteria contain mycolic acids and p

Question 4

Describe how vancomycin affects the cell wall of Gram-positive bacteria. How have some cells developed resistance?

Accepted Answer

Gram-positive bacteria have a D-ala- D-a

Question 5

Which name refers to having flagella attached at one or both ends of the cell?

Accepted Answer

A)  peritrichous 
B)  lophotrichous 
C)  monotrichous 
D)  bitrichous 
E)  flagellated 
A)  peritrichous 
B)  lophotrichous 
C)  monotrichous 
D)  bitrichous 
E)  flagellated

Question 6

Which of the following materials is found in aquatic bacteria and used for positioning in the water column?

Accepted Answer

A)  gas vesicle 
B)  sulfur 
C)  polyphosphate 
D)  glycogen 
E)  magnetosome 
A)  gas vesicle 
B)  sulfur 
C)  polyphosphate 
D)  glycogen 
E)  magnetosome

Question 7

The z-ring is

Accepted Answer

A)  made up of an actin-like polymer. 
B)  involved in segregation of two to four nucleoids. 
C)  controlled by a nutrient-dependent regulator. 
D)  involved in replication but not cytokinesis. 
E)  involved in preventing transcription of noncoding regions of DNA. 
A)  made up of an actin-like polymer. 
B)  involved in segregation of two to four nucleoids. 
C)  controlled by a nutrient-dependent regulator. 
D)  involved in replication but not cytokinesis. 
E)  involved in preventing transcription of noncoding regions of DNA.

Question 8

All of the following are used by prokaryotic cells for attaching to solid surfaces EXCEPT

Accepted Answer

A)  endospore. 
B)  capsule. 
C)  stalks. 
D)  fimbriae. 
E)  pili. 
A)  endospore. 
B)  capsule. 
C)  stalks. 
D)  fimbriae. 
E)  pili.

Question 9

List and briefly describe four components of a typical bacterial cell.

Accepted Answer

Possible answers include the following:

Question 10

Which of the following is FALSE regarding the polarity and aging of Caulobacter crescentus?

Accepted Answer

A)  The protein TipN is involved. 
B)  The two poles of the cell are different. 
C)  It contributes to a life cycle. 
D)  It results in two cell types (i.e., stalked cell and swarmer). 
E)  It results in two cell types, each with a monotrichous flagellum. 
A)  The protein TipN is involved. 
B)  The two poles of the cell are different. 
C)  It contributes to a life cycle. 
D)  It results in two cell types (i.e., stalked cell and swarmer). 
E)  It results in two cell types, each with a monotrichous flagellum.

Question 11

The structure shown below is found in the ________ of some bacteria and the larger molecules are connected by the ________ cross-link shown at the arrow.

Accepted Answer

A)  cell wall; sugar 
B)  cell membrane; peptide 
C)  cell membrane; sugar 
D)  cell wall; peptide 
E)  nucleoid membrane; peptide 
A)  cell wall; sugar 
B)  cell membrane; peptide 
C)  cell membrane; sugar 
D)  cell wall; peptide 
E)  nucleoid membrane; peptide

Question 12

Which age class of M. tuberculosis (age 1 or age 3) do you think would be more resistant to quinolones, which block gyrase that supercoils DNA?

Accepted Answer

The polar-aging phenomenon of M. tubercu

As proteins are found in various subcellular fractions, how could they be further analyzed?

Efflux pumps send antibiotics, such as the protein synthesis-inhibitor tetracycline, out of the bacterial cells, enabling them to grow in the presence of antibiotics. Which of the following therapeutic approaches will be LEAST effective?

What unusual lipids are found in mycobacteria, and of what benefit are they to these bacteria?

Describe how vancomycin affects the cell wall of Gram-positive bacteria. How have some cells developed resistance?

Which name refers to having flagella attached at one or both ends of the cell?

Which of the following materials is found in aquatic bacteria and used for positioning in the water column?

The z-ring is

All of the following are used by prokaryotic cells for attaching to solid surfaces EXCEPT

List and briefly describe four components of a typical bacterial cell.

Which of the following is FALSE regarding the polarity and aging of Caulobacter crescentus?

The structure shown below is found in the of some bacteria and the larger molecules are connected by the cross-link shown at the arrow.

Which age class of M. tuberculosis (age 1 or age 3) do you think would be more resistant to quinolones, which block gyrase that supercoils DNA?

Microbial Life: Origin and Discovery

Observing the Microbial Cell

Bacterial Culture, Growth, and Development

Environmental Influences and Control of Microbial Growth

Viruses

Genomes and Chromosomes

Transcription, Translation, and Bioinformatics

Gene Transfer, Mutations, and Genome Evolution

Molecular Regulation

Viral Molecular Biology

Biotechniques and Synthetic Biology

Energetics and Catabolism

Electron Flow in Organotrophy, Lithotrophy, and Phototrophy

Biosynthesis

Food and Industrial Microbiology

Origins and Evolution

Bacterial Diversity

Archaeal Diversity

Eukaryotic Diversity

Microbial Ecology

Microbes in Global Elemental Cycles

Human Microbiota and Innate Immunity

The Adaptive Immune Response

Microbial Pathogenesis

Microbial Diseases

Antimicrobial Therapy

Clinical Microbiology and Epidemiology

Filters

Exam 3: Cell Structure and Function

As proteins are found in various subcellular fractions, how could they be further analyzed?

Efflux pumps send antibiotics, such as the protein synthesis-inhibitor tetracycline, out of the bacterial cells, enabling them to grow in the presence of antibiotics. Which of the following therapeutic approaches will be LEAST effective?

What unusual lipids are found in mycobacteria, and of what benefit are they to these bacteria?

Describe how vancomycin affects the cell wall of Gram-positive bacteria. How have some cells developed resistance?

Which name refers to having flagella attached at one or both ends of the cell?

Which of the following materials is found in aquatic bacteria and used for positioning in the water column?

The z-ring is

All of the following are used by prokaryotic cells for attaching to solid surfaces EXCEPT

List and briefly describe four components of a typical bacterial cell.

Which of the following is FALSE regarding the polarity and aging of Caulobacter crescentus?

The structure shown below is found in the ________ of some bacteria and the larger molecules are connected by the ________ cross-link shown at the arrow.

Which age class of M. tuberculosis (age 1 or age 3) do you think would be more resistant to quinolones, which block gyrase that supercoils DNA?

Microbial Life: Origin and Discovery

Observing the Microbial Cell

Bacterial Culture, Growth, and Development

Environmental Influences and Control of Microbial Growth

Viruses

Genomes and Chromosomes

Transcription, Translation, and Bioinformatics

Gene Transfer, Mutations, and Genome Evolution

Molecular Regulation

Viral Molecular Biology

Biotechniques and Synthetic Biology

Energetics and Catabolism

Electron Flow in Organotrophy, Lithotrophy, and Phototrophy

Biosynthesis

Food and Industrial Microbiology

Origins and Evolution

Bacterial Diversity

Archaeal Diversity

Eukaryotic Diversity

Microbial Ecology

Microbes in Global Elemental Cycles

Human Microbiota and Innate Immunity

The Adaptive Immune Response

Microbial Pathogenesis

Microbial Diseases

Antimicrobial Therapy

Clinical Microbiology and Epidemiology

Filters

The structure shown below is found in the of some bacteria and the larger molecules are connected by the cross-link shown at the arrow.