Campbell Biology
12th Edition
ISBN: 9780135188743
Author: Urry
Publisher: PEARSON
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Chapter 19, Problem 3TYU
Summary Introduction
Introduction: Avian influenza virus (H5N1) is a type of influenza A virus that is pathogenic and affects birds. It causes a disease known as bird flu. This disease causes respiratory disease in birds. Humans are infected only when they are in close contact with the infected birds or with environments contaminated with H5N1 virus. H5N1 viral disease is considered to be a promising pandemic threat. A pandemic disease is the spread of an infection worldwide affecting larger human populations.
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e) Bats have been implicated as the source of many viruses against which humans have a difficult time mounting an effective immune response. Interestingly, flight plays an important role. i) Describe and explain i) the role that flight plays in creating these kinds of viruses, ii) how the viruses cross over into humans, and iii) why our immune response has a more difficult time mounting an effective response against them
Which of the following best explains why vaccination of humans against rabies can be delayed until after exposure to a potential source of infection?
A) Antibody responses are more rapid than those against other viruses
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D) The virus does not reach i target organ for several weeks or months
Creutzfeldt-Jakob disease:(a) Is a form of meningitis(b) Is slow to develop with a long period of recuperationbefore the patient is cured(c) Is a transmissible spongiform encephalopathy(d) Can only be transmitted by ingestion of prion-contaminated meat(e) Is always an inherited disease
Chapter 19 Solutions
Campbell Biology
Ch. 19.1 - Prob. 1CCCh. 19.1 - Prob. 2CCCh. 19.2 - Compare the effect on the host cell of a lytic...Ch. 19.2 - MAKE CONNECTIONS Compare the CRISPR-Cas system to...Ch. 19.2 - Prob. 3CCCh. 19.2 - Why is HIV called a retrovirus?Ch. 19.2 - Prob. 5CCCh. 19.3 - Describe two ways in which a preexisting virus can...Ch. 19.3 - Contrast horizontal and vertical transmission of...Ch. 19.3 - WHAT IF? TMV has been isolated from virtually all...
Ch. 19 - Are viruses generally considered living or...Ch. 19 - Prob. 19.2CRCh. 19 - Prob. 19.3CRCh. 19 - Which of the following characteristics,...Ch. 19 - Emerging viruses arise by (A) mutation of existing...Ch. 19 - Prob. 3TYUCh. 19 - Prob. 4TYUCh. 19 - Prob. 5TYUCh. 19 - DRAW IT Redraw Figure 19.8 to show the replicative...Ch. 19 - EVOLUTION CONNECTION The successof some viruses...Ch. 19 - SCIENTIFIC INQUIRY When bacteria infect an animal,...Ch. 19 - WRITE ABOUT A THEME: ORGANIZATION While viruses...Ch. 19 - Prob. 10TYU
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- ) The largest animal virus is classified as: a) Herpesvirus b) Poxvirus c) HIV d) Flu virus e) Adenovirusarrow_forwardWhich statistic below is the best example of incidence of a disease? A) In 2005, 2 million people died from HIV B) A total of 40 million people have died from HIV infection C) In 2005, 4 million people acquired HIV D) A total of 65 million people have gotten HIV E) 25 million people currently suffer from HIV infectionarrow_forwardThe dreaded virus which, on reaching the central nervous system, produces spasms of the muscles of the throat and the cheat while swallowing, and is sure to kill the patient is (a) Poliomyelitis virus (b) AIDS virus (c) Smallpox virus (d) Rabies virusarrow_forward
- The types of host species a particular virus can infect are referred to as its (a) assembly (b) commensal cohort (c) host range (d) prophage factor (e) virulence factorarrow_forwardVaccines typically contain particles that are pieces of the virus or bacteria they target. How do you think this helps you avoid getting sick in the future? a) vaccine-preventable diseases are just part of life. it is better to have the disease than become immune through vaccines b) vaccine programs fail to produce overall health benefits of a population by because they do not reduce the transmission od disease c) the particles act as antibodies, against which the person's immune system will develop antibodies d) the particles act as antigens, against which the person's immune system will develop antibodies e) vaccines create an entirely new immune systemarrow_forwardRabies a)Infects the central nervous system. b)Infects the neuromuscular junction. c)Is caused by a bacterium. d)Is caused by a virus.arrow_forward
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