EP HUMAN BIOLOGY-MODIFIED MASTERING
8th Edition
ISBN: 9780134326436
Author: Johnson
Publisher: PEARSON CO
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Chapter 9, Problem 2CR
Summary Introduction
To review:
The unusual characteristics about viruses, due to which sometimes they are considered as living things and sometimes as nonliving entities.
Introduction:
Viruses are the most dangerous infectious agent. It is very simple in structure. It consists of small pieces of genetic material that is either RNA (ribonucleic acid) or DNA (deoxyribonucleic acid). Its genetic material is enclosed in a protein coat. It can cause different types of severe illness such as AIDS (acquired immunodeficiency virus).
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Some people feel that viruses are living organisms. Give an explanation as to why they cannot be considered living at this time.
How common is ABV in the USA?
In the United States, over half of adults have been infected with ABV by age 40. Once ABV is in a person's body, it stays there for life and can reactivate.
Match terms with descriptions based on the text above. You can use an answer more than once or not at all.
"Over half of adults have been infected with ABV by age 40."
ABV could belong to this group of viruses:
A.
Human Papilloma Viruses
B.
Incidence of ABV
C.
Herpesviruses
D.
Prevalence of ABV by age 40
Explain why a virus is considered living or not living?
Chapter 9 Solutions
EP HUMAN BIOLOGY-MODIFIED MASTERING
Ch. 9 - Prob. 1QCCh. 9 - Prob. 2QCCh. 9 - Define the term pathogen and give some examples.Ch. 9 - Prob. 2CRCh. 9 - Prob. 3CRCh. 9 - Prob. 4CRCh. 9 - Prob. 5CRCh. 9 - Describe in general terms the distinction between...Ch. 9 - Describe the concept of an antigen and how it...Ch. 9 - Prob. 8CR
Ch. 9 - Prob. 9CRCh. 9 - Prob. 10CRCh. 9 - Prob. 1TYCh. 9 - Prob. 2TYCh. 9 - Prob. 3TYCh. 9 - Prob. 4TYCh. 9 - Prob. 5TYCh. 9 -
6. Which of the following is a benefit of...Ch. 9 - Prob. 7TYCh. 9 -
8. The following are steps in phagocytosis: (1)...Ch. 9 - Prob. 9TYCh. 9 - Prob. 10TYCh. 9 - Prob. 11TYCh. 9 - Prob. 12TYCh. 9 - Which of the following increases the likelihood of...Ch. 9 - Which of the following does not belong with the...Ch. 9 - Which of the following statements about HIV is...Ch. 9 - Prob. 1AWKCh. 9 - Prob. 2AWKCh. 9 -
3. Everyone knows that bacteria can cause...Ch. 9 - Prob. 4AWKCh. 9 - Prob. 5AWKCh. 9 - Why is it that most people get the chicken pox...Ch. 9 - The immune system is supposed to defend us from...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Figure 17.5 Which of the following statements about virus structure is true? a. All viruses are encased in a viral membrane. b. The capsomere is made up of small protein subunits called capsids. c. DNA is the genetic material in all viruses. d. Glycoproteins help the virus attach to the host cell.arrow_forwardAll viruses contain nucleic acid and a capsid. True or false?arrow_forwardDiscuss the following statement: “Viruses exist in the twilight zone of life: outside cells they are simply dead assemblies of molecules; inside cells, however, they are alive.”arrow_forward
- Viruses are very unique when it comes to their infection mechanism?arrow_forwardWhich of the following statements is TRUE concerning viral envelopes? Only viruses with envelopes have their contents enclosed by a layer containing lipids Only viruses without envelopes interact with receptor proteins on the surface of the host cell. Only viruses without envelopes can release their genetic material into the cytoplasm of the host. Only viruses with envelopes package their genetic material by engulfing it.arrow_forwardBecause viruses lack some of the traits seen in all living things, many scientists do not believe viruses to be genuinely "alive." Using a few characteristics of live organisms as examples, explain why viruses may not be truly "alive."arrow_forward
- Many viruses have the ability to resurrect dead cells. Why investigating this feature of viruses may be relevant to youarrow_forwardA common characteristic of viruses is that they contain both RNA and DNA in their genome. True Falsearrow_forwardDescribe the ways that viruses can spread between hosts.arrow_forward
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