Textbook Question
Sketch, name, and describe three flagellar arrangements in bacteria.
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Ch. 3 - Cell Structure and Function
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 3, Problem 1
Match the structures with their descriptions following. A letter may be used more than once or not at all, and more than one letter may be correct for each blank.
____ Glycocalyx
____ Flagella
____ Axial filaments
____ Cilia
____ Fimbriae
____ Pili
____ Hami
A. Bristlelike projections found in quantities of 100 or more
B. Long whip
C. Responsible for conjugation
D. “Sweet cup” composed of polysaccharides and/or polypeptides
E. Numerous “grappling-hook” projections
F. Responsible for motility of spirochetes
G. Extensions not used for cell motility
H. Made of tubulin in eukaryotes
I. Made of flagellin in bacteria
Verified step by step guidance1
Step 1: Understand each structure and its general characteristics. For example, Glycocalyx is an outer coating often composed of polysaccharides and/or polypeptides, which corresponds to a 'sweet cup' description.
Step 2: Match Glycocalyx with description D, since it is known as a 'sweet cup' composed of polysaccharides and/or polypeptides.
Step 3: Identify Flagella as long whip-like structures responsible for motility, which matches descriptions B (long whip) and I (made of flagellin in bacteria).
Step 4: Axial filaments are unique to spirochetes and are responsible for their motility, so match them with F (responsible for motility of spirochetes).
Step 5: For Cilia, which are bristlelike projections found in large numbers (100 or more) and made of tubulin in eukaryotes, match with A (bristlelike projections found in quantities of 100 or more) and H (made of tubulin in eukaryotes).
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Bacterial Surface Structures
Bacterial surface structures include various appendages like flagella, fimbriae, pili, and glycocalyx, each serving distinct functions such as motility, attachment, or protection. Understanding these structures helps in identifying their roles and matching them to descriptions based on morphology and function.
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03:52
Review of Prokaryotic Surface Structures
Motility Mechanisms in Bacteria
Motility in bacteria is primarily facilitated by flagella and axial filaments. Flagella are long, whip-like structures made of flagellin that rotate to propel the cell, while axial filaments, found in spirochetes, wrap around the cell and enable corkscrew movement.
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03:49Mechanism of Natural Transformation
Functions of Specialized Appendages
Specialized appendages like pili and fimbriae have roles beyond motility; pili are involved in conjugation (DNA transfer), while fimbriae aid in attachment to surfaces. Hami are unique grappling-hook-like structures used by some archaea for attachment, highlighting diversity in microbial appendages.
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06:04Functional Groups
Related Practice
Textbook Question
Label the structures of the following prokaryotic and eukaryotic cells. With a single word or short phrase, explain the function of each structure.
a.
b.
c.
d.
e.
f.
g.
h.
i.
j.
k.
l.
m.
n.
o.
p.
q.
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Textbook Question
A cell may allow a large or charged chemical to move across the cytoplasmic membrane, down the chemical’s electrical and chemical gradients, in a process called _________ . .
a. active transport
b. facilitated diffusion
c. endocytosis
d. pinocytosis
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Textbook Question
Describe (or draw) an example of diffusion down a concentration gradient.
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