Domanda del libro di testo
Why are humans considered “dead-end” hosts for many arboviruses?
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Ch. 25 - Pathogenic RNA Viruses
Bauman6th EditionMicrobiology with Diseases by TaxonomyISBN: 9780134832302
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TOC.tableOfContents
- 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: 9780134832302Non è quello che usi tu?Cambia libro di testo
Capitolo 25, Problema 1
_____A single virion is sufficient to cause a cold.
Guida verificata passo dopo passo1
Understand the term 'virion': A virion is a complete virus particle that consists of an RNA or DNA core with a protein coat and is the extracellular infective form of a virus.
Recognize the infectious dose concept: The infectious dose is the number of virions required to establish an infection in a host.
Consider the nature of the common cold virus (usually rhinovirus): It is known for its high infectivity, meaning very few virions are needed to cause infection.
Analyze the statement: 'A single virion is sufficient to cause a cold' implies that even one virus particle can initiate infection, which relates to the minimal infectious dose.
Conclude that the statement is about the minimal infectious dose and the high infectivity of cold viruses, emphasizing that sometimes even one virion can start the infection process.
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Virion and Virus Structure
A virion is the complete, infectious form of a virus outside a host cell, consisting of genetic material enclosed in a protein coat. Understanding the virion's structure helps explain how viruses infect host cells and initiate disease.
Video consigliato:
02:33
Introduction to Animal Virus Infections
Infectious Dose
The infectious dose is the minimum number of viral particles required to establish an infection. Some viruses, like those causing the common cold, can cause infection with very few virions, sometimes even a single one.
Video consigliato:
05:09Intro to Characteristics of Infectious Disease
Pathogenesis of the Common Cold
The common cold is caused primarily by rhinoviruses, which infect the upper respiratory tract. Their ability to cause infection from a low number of virions is linked to their rapid replication and evasion of the immune response.
Video consigliato:
02:35Intro to Bacterial Pathogenesis
Pratica correlata
Domanda del libro di testo
Young Luis has skin lesions. His mother knows from microbiology class that five childhood diseases can produce spots. Name those five diseases and the viruses that cause each. List some questions to ask to determine which of these viruses Luis has.
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Domanda del libro di testo
What viral family causes each of these diseases? (A family may be used more than once.)
1. _____Myocarditis
2. _____Colorado tick fever
3. _____Rabies
4. _____Influenza
5. _____Dengue fever
6. _____German measles
7. _____Acute gastroenteritis
8. _____Ebola virus
9. _____RSV
10. _____Western equine encephalitis
11. _____No known disease
A. Rhabdoviridae
B. Paramyxoviridae
C. Reoviridae
D. Coronaviridae
E. Togaviridae
F. Flaviviridae
G. Orthomyxoviridae
H. Orphan virus
I. Caliciviridae
J. Filoviridae
K. Picornaviridae
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Domanda del libro di testo
Label the steps in retroviral replication shown for HIV.
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Domanda del libro di testo
A segmented genome is one that has __________.
a. more than one strand of nucleic acid
b. double-stranded RNA
c. both RNA and DNA strands
d. both +ssRNA and -ssRNA molecules
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Domanda del libro di testo
What do viruses in the families Picornaviridae, Caliciviridae, Astroviridae, Coronaviridae, Togaviridae, Flaviviridae, and Retroviridae have in common?
a. They are arboviruses.
b. They are nonpathogenic.
c. They have positive single-stranded RNA genomes.
d. They have negative single-stranded RNA genomes.
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