Textbook Question
Name three groups of low G + C Gram-positive bacteria.
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Ch. 11 - Characterizing and Classifying Prokaryotes
Bauman6th EditionMicrobiology with Diseases by TaxonomyISBN: 9780134832302
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Table of contents
- Ch. 1 - A Brief History of Microbiology31
- Ch. 2 - The Chemistry of Microbiology28
- Ch. 3 - Cell Structure and Function39
- Ch. 4 - Microscopy, Staining, and Classification25
- Ch. 5 - Microbial Metabolism51
- Ch. 6 - Microbial Nutrition and Growth37
- Ch. 7 - Microbial Genetics51
- Ch. 8 - Recombinant DNA Technology21
- Ch. 9 - Controlling Microbial Growth in the Environment36
- Ch. 10 - Controlling Microbial Growth in the Body: Antimicrobial Drugs21
- Ch. 11 - Characterizing and Classifying Prokaryotes29
- Ch. 12 - Characterizing and Classifying Eukaryotes34
- Ch. 13 - Characterizing and Classifying Viruses, Viroids, and Prions23
- Ch. 14 - Infection, Infectious Diseases, and Epidemiology35
- Ch. 15 - Innate Immunity34
- Ch. 16 - Adaptive Immunity21
- Ch. 17 - Immunization and Immune Testing29
- Ch. 18 - Immune Disorders22
- Ch. 19 - Pathogenic Gram-Positive Bacteria25
- Ch. 20 - Pathogenic Gram-Negative Cocci and Bacilli28
- Ch. 21 - Rickettsias, Chlamydias, Spirochetes, and Vibrios25
- Ch. 22 - Pathogenic Fungi47
- Ch. 23 - Parasitic Protozoa, Helminths, and Arthropod Vectors44
- Ch. 24 - Pathogenic DNA Viruses23
- Ch. 25 - Pathogenic RNA Viruses30
- Ch. 26 - Applied and Industrial Microbiology29
- Ch. 27 - Microbial Ecology and Microbiomes22
Bauman6th EditionMicrobiology with Diseases by TaxonomyISBN: 9780134832302Not the one you use?Change textbook
Chapter 11, Problem 3
Which of the following terms best describes stiff, spiral-shaped prokaryotic cells?
a. Cocci
b. Bacilli
c. Spirilla
d. Spirochetes
Verified step by step guidance1
Step 1: Understand the shape terminology for prokaryotic cells. 'Cocci' refers to spherical-shaped bacteria, 'Bacilli' refers to rod-shaped bacteria, 'Spirilla' refers to rigid spiral-shaped bacteria, and 'Spirochetes' refers to flexible spiral-shaped bacteria.
Step 2: Identify the key descriptor in the question: 'stiff, spiral-shaped prokaryotic cells.' This indicates the cells have a spiral shape and are rigid rather than flexible.
Step 3: Compare the options with the description: Cocci (spherical) and Bacilli (rod-shaped) do not match the spiral shape, so they can be excluded.
Step 4: Between 'Spirilla' and 'Spirochetes,' note that Spirilla are known to be rigid or stiff spiral-shaped bacteria, while Spirochetes are more flexible and have a unique corkscrew motion.
Step 5: Conclude that the term best describing stiff, spiral-shaped prokaryotic cells is 'Spirilla.'
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Prokaryotic Cell Shapes
Prokaryotic cells have distinct shapes that help in their identification. Common shapes include cocci (spherical), bacilli (rod-shaped), and spiral forms. Understanding these shapes is fundamental to classifying bacteria and predicting their behavior.
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Spiral-Shaped Bacteria Types
Spiral-shaped bacteria are categorized mainly into spirilla and spirochetes. Spirilla are rigid, spiral-shaped bacteria with external flagella, while spirochetes are flexible and have internal flagella, allowing different modes of movement.
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Terminology for Bacterial Morphology
Accurate terminology is essential in microbiology to describe bacterial morphology. Terms like cocci, bacilli, spirilla, and spirochetes specify shape and structural features, aiding in identification and understanding of bacterial physiology.
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Related Practice
Textbook Question
Name and describe three types of bacteria mentioned in this chapter that “glide.”
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Textbook Question
For each of the following statements that is true, write “true” in the blank. For each statement that is false, write the word(s) that should be substituted for the underlined word(s) to make the statement correct.
__________ A bacillus is a bacterium with a slightly curved rod shape.
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Textbook Question
For each of the following statements that is true, write “true” in the blank. For each statement that is false, write the word(s) that should be substituted for the underlined word(s) to make the statement correct.
__________ Chlamydias have peptidoglycan cell walls.
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Textbook Question
Endospores ___________ .
a. remain alive for decades
b. can remain alive in boiling water
c. exist in a state of suspended animation
d. All of the above are correct.
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Textbook Question
For each of the following statements that is true, write “true” in the blank. For each statement that is false, write the word(s) that should be substituted for the underlined word(s) to make the statement correct.
__________ If you were to view staphylococci, you should expect to see clusters of cells.
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