Question 1

All of the following pertain to endotoxins, except they

Accepted Answer

A) are specific bacterial cell wall lipids. 
B) can stimulate fever in the human body. 
C) can cause shock in the human body. 
D) are involved in typhoid fever and some meningitis cases. 
E) are found in acid-fast bacterial cell walls. 
A) are specific bacterial cell wall lipids. 
B) can stimulate fever in the human body. 
C) can cause shock in the human body. 
D) are involved in typhoid fever and some meningitis cases. 
E) are found in acid-fast bacterial cell walls.

Question 2

Iodine is the decolorizer in the Gram stain.

Accepted Answer

A) True 
 B)False

Question 3

Bacteria in the genus Mycoplasma and bacteria called L-forms lack cell walls.

Accepted Answer

A) True 
 B)False

Question 4

A newly described unicellular organism was isolated from a salt mine.This organism has no membranous organelles and its cell wall lacks peptidoglycan.Attempts to culture it in a medium with less than 25% salt were unsuccessful, but it was able to grow well on 25% salt supplemented agar.This organism would best be described as a ______________ and is most likely in the domain ___________.

Accepted Answer

A) halophile; Bacteria. 
B) thermophile; Bacteria. 
C) thermophile; Eukarya. 
D) halophile; Archaea. 
E) thermophile; Archaea. 
A) halophile; Bacteria. 
B) thermophile; Bacteria. 
C) thermophile; Eukarya. 
D) halophile; Archaea. 
E) thermophile; Archaea.

Question 5

A bacterial cell exhibiting chemotaxis probably has

Accepted Answer

A) fimbriae. 
B) capsules. 
C) mesosomes. 
D) flagella. 
E) metachromatic granules. 
A) fimbriae. 
B) capsules. 
C) mesosomes. 
D) flagella. 
E) metachromatic granules.

Question 6

Which cell structure is an important component in modern genetic engineering techniques?

Accepted Answer

A) ribosomes 
B) capsules 
C) plasmids 
D) inclusions 
E) mesosomes 
A) ribosomes 
B) capsules 
C) plasmids 
D) inclusions 
E) mesosomes

Question 7

Which structure protects bacteria from being phagocytized?

Accepted Answer

A) slime layer 
B) fimbriae 
C) cell membrane 
D) capsule 
E) All of these choices are correct. 
A) slime layer 
B) fimbriae 
C) cell membrane 
D) capsule 
E) All of these choices are correct.

Question 8

Which term is not used to describe bacterial cell shapes?

Accepted Answer

A) coccus 
B) tetrad 
C) vibrio 
D) rod 
E) spirochete 
A) coccus 
B) tetrad 
C) vibrio 
D) rod 
E) spirochete

Question 9

A prokaryotic ribosome has a 70 S size composed of two smaller subunits of which the smaller subunit is S size.-16-2013

Accepted Answer

The answer of A prokaryotic ribosome has a 70 S...

Question 10

The transfer of genes during bacterial conjugation involves rigid, tubular appendages called

Accepted Answer

A) flagella. 
B) cilia. 
C) fimbriae. 
D) periplasmic flagella (axial filaments). 
E) sex pili. 
A) flagella. 
B) cilia. 
C) fimbriae. 
D) periplasmic flagella (axial filaments). 
E) sex pili.

Question 11

Which of the following makes possible the differentiation of members of the genus Mycobacterium and the genus Nocardia from other bacteria?

Accepted Answer

A) the Gram stain 
B) the presence of flagella 
C) the acid-fast stain 
D) an endospore stain 
E) the capsule stain 
A) the Gram stain 
B) the presence of flagella 
C) the acid-fast stain 
D) an endospore stain 
E) the capsule stain

Question 12

The cell _____ is composed of three layers: the glycocalyx, the cell wall, and the cell membrane.

Accepted Answer

The answer of The cell _____ is composed of three...

Question 13

Which of the three domains includes organisms that would be most likely to survive the environmental conditions that existed on Earth nearly 4 billion years ago?

Accepted Answer

A) Eukarya 
B) Archaea 
C) Bacteria 
A) Eukarya 
B) Archaea 
C) Bacteria

Question 14

The difference in cell wall structure of Mycobacterium and Nocardia compared to the typical gram-positive bacterial cell wall structure is

Accepted Answer

A) the presence of more peptidoglycan. 
B) the predominance of unique, waxy lipids. 
C) the rapid decolorization during staining. 
D) the presence of lipopolysaccharide. 
E) All of these choices are correct. 
A) the presence of more peptidoglycan. 
B) the predominance of unique, waxy lipids. 
C) the rapid decolorization during staining. 
D) the presence of lipopolysaccharide. 
E) All of these choices are correct.

Question 15

A halophile would ______________ in a high salt environment.

Accepted Answer

A) undergo plasmolysis 
B) undergo osmotic lysis 
C) become crenated 
D) thrive 
E) form endospores 
A) undergo plasmolysis 
B) undergo osmotic lysis 
C) become crenated 
D) thrive 
E) form endospores

Question 16

The process of endospore formation is _____________, while the process of an endospore growing into a vegetative cell is ____________.

Accepted Answer

A) germination; sporulation 
B) reproduction; sporulation 
C) germination; reproduction 
D) sporulation; germination 
A) germination; sporulation 
B) reproduction; sporulation 
C) germination; reproduction 
D) sporulation; germination

Question 17

Which is mismatched?

Accepted Answer

A) Chlamydias - lack ability to independently complete growth and metabolism 
B) green sulfur bacteria - photosynthetic anaerobes that use sulfur in metabolism 
C) Cyanobacteria - filamentous, gliding thermophilic bacteria 
D) Myxobacteria - gliding, fruiting slime bacteria 
A) Chlamydias - lack ability to independently complete growth and metabolism 
B) green sulfur bacteria - photosynthetic anaerobes that use sulfur in metabolism 
C) Cyanobacteria - filamentous, gliding thermophilic bacteria 
D) Myxobacteria - gliding, fruiting slime bacteria

Question 18

The prokaryotic flagellum has three parts: the _____, the hook, and the basal body.

Accepted Answer

The answer of The prokaryotic flagellum has three parts: the...

Question 19

What is the correct sequence for a Gram stain?

Accepted Answer

A) Gram's iodine, Crystal Violet, Alcohol, Safranin 
B) crystal Violet, Safranin, Alcohol, Gram's iodine 
C) crystal Violet, Gram's iodine, Alcohol, Safranin 
D) safranin, Crystal Violet, Gram's iodine, Alcohol 
E) alcohol, Crystal Violet, Safranin, Gram's iodine 
A) Gram's iodine, Crystal Violet, Alcohol, Safranin 
B) crystal Violet, Safranin, Alcohol, Gram's iodine 
C) crystal Violet, Gram's iodine, Alcohol, Safranin 
D) safranin, Crystal Violet, Gram's iodine, Alcohol 
E) alcohol, Crystal Violet, Safranin, Gram's iodine

Question 20

What unit of measure is most appropriate for expressing the size of bacteria?

Accepted Answer

A) micrometer 
B) nanometer 
C) milimeter 
D) picometer 
A) micrometer 
B) nanometer 
C) milimeter 
D) picometer

Exam 4: A Survey of Prokaryotic Cells and Microorganisms

All of the following pertain to endotoxins, except they

Iodine is the decolorizer in the Gram stain.

Bacteria in the genus Mycoplasma and bacteria called L-forms lack cell walls.

A bacterial cell exhibiting chemotaxis probably has

Which cell structure is an important component in modern genetic engineering techniques?

Which structure protects bacteria from being phagocytized?

Which term is not used to describe bacterial cell shapes?

A prokaryotic ribosome has a 70 S size composed of two smaller subunits of which the smaller subunit is S size.-16-2013

The transfer of genes during bacterial conjugation involves rigid, tubular appendages called

Which of the following makes possible the differentiation of members of the genus Mycobacterium and the genus Nocardia from other bacteria?

The cell _____ is composed of three layers: the glycocalyx, the cell wall, and the cell membrane.

Which of the three domains includes organisms that would be most likely to survive the environmental conditions that existed on Earth nearly 4 billion years ago?

The difference in cell wall structure of Mycobacterium and Nocardia compared to the typical gram-positive bacterial cell wall structure is

A halophile would ______________ in a high salt environment.

The process of endospore formation is _____________, while the process of an endospore growing into a vegetative cell is ____________.

Which is mismatched?

The prokaryotic flagellum has three parts: the _____, the hook, and the basal body.

What is the correct sequence for a Gram stain?

What unit of measure is most appropriate for expressing the size of bacteria?

The Main Themes of Microbiology

The Chemistry of Biology

Tools of the Laboratory: Methods of Studying Microorganisms

A Survey of Eukaryotic Cells and Microorganisms

An Introduction to Viruses

Microbial Nutrition, Ecology, and Growth

An Introduction to Microbial Metabolism: the Chemical Crossroads of Life

Microbial Genetics

Genetic Engineering: a Revolution in Molecular Biology

Physical and Chemical Agents for Microbial Control

Drugs, Microbes, Host--The Elements of Chemotherapy

Microbe-Human Interactions: Infection and Disease

An Introduction to Host Defenses and Innate Immunities

Adaptive, Specific Immunity and Immunization

Disorders in Immunity

Procedures for Identifying Pathogens and Diagnosing Infections

The Gram-Positive and Gram-Negative Cocci of Medical Importance

The Gram-Positive Bacilli of Medical Importance

The Gram-Negative Bacilli of Medical Importance

Miscellaneous Bacterial Agents of Disease

The Fungi of Medical Importance

The Parasites of Medical Importance

Introduction to Viruses That Infect Humans: the Dna Viruses

The Rna Viruses That Infect Humans

Environmental Microbiology

Applied and Industrial Microbiology

Filters

The process of endospore formation is _, while the process of an endospore growing into a vegetative cell is .