Ch. 11 - The Prokaryotes: Domains Bacteria and Archaea

Tortora - Microbiology: An Introduction 14th Edition

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Tortora 14th Edition

Ch. 11 - The Prokaryotes: Domains Bacteria and Archaea

Problem 3

Chapter 11, Problem 3

Pathogenic bacteria can be
a. motile.
b. rods.
c. cocci.
d. anaerobic.
e. all of the above.

Verified step by step guidance

Understand the question is asking about characteristics that pathogenic bacteria can have.

Recall that 'motile' means capable of movement, which some pathogenic bacteria are, using structures like flagella.

Recognize that 'rods' (bacilli) and 'cocci' (spherical bacteria) are common bacterial shapes, and pathogenic bacteria can have either shape.

Know that 'anaerobic' bacteria can survive or grow without oxygen, and some pathogenic bacteria are anaerobic.

Conclude that since pathogenic bacteria can be motile, rods, cocci, and anaerobic, the correct answer includes all these options.

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Bacterial Morphology

Bacteria exhibit various shapes, primarily rods (bacilli) and spheres (cocci). These shapes help in identification and classification of bacteria, including pathogenic types that cause diseases.

Bacterial Motility

Some bacteria are motile, meaning they can move using structures like flagella. Motility aids in colonization and infection processes, allowing pathogens to reach favorable environments within the host.

Oxygen Requirements of Bacteria

Bacteria can be aerobic (requiring oxygen) or anaerobic (thriving without oxygen). Pathogenic bacteria include anaerobes that survive in oxygen-poor tissues, influencing infection sites and treatment strategies.

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Oxygen Requirements for Microbial Growth

Related Practice

Textbook Question

Compare and contrast each of the following:

a. Cyanobacteria and algae

b. Actinomycetes and fungi

c. Bacillus and Lactobacillus

d. Pseudomonas and Escherichia

e. Leptospira and Spirillum

f. Escherichia and Bacteroides

g. Rickettsia and Chlamydia

h. Mycobacterium and Mycoplasma

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Textbook Question

Which of the following does not belong with the others?

a. Enterobacteriales

b. Lactobacillales

c. Legionellales

d. Pasteurellales

e. Vibrionales

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Textbook Question

Draw a key to differentiate the following bacteria: cyanobacteria, Cytophaga, Desulfovibrio, Frankia, Hyphomicrobium, methanogens, myxobacteria, Nitrobacter, purple bacteria, Sphaerotilus, and Sulfolobus.

Textbook Question

These organisms are important in sewage treatment and can produce a fuel used for home heating and for generating electricity.

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Textbook Question

Which of the following terms is the most specific?

a. bacillus

b. Bacillus

c. gram-positive

d. endospore-forming rods and cocci

e. anaerobic

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Textbook Question