EBK WHAT IS LIFE? A GUIDE TO BIOLOGY
4th Edition
ISBN: 9781319159153
Author: PHELAN
Publisher: VST
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Chapter 15, Problem 8MC
Summary Introduction
Introduction:
The viruses are non cellular organisms that are characterized by having an inert crystalline structure outside the living cell .They are obligate intracellular
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Which of the following is a reason that scientists do not classify viruses as living things?
A. They must infect a host because they cannot reproduce on their own.
B. They contain DNA, like all living organisms.
C. The experience evolution through natural selection.
D. They replicate themselves and reproduce
Viruses are not considered to be alive because:
(choose all that apply)
Virus Basics
Viruses are not considered to be alive because:
(choose all that apply)
A. They do not grow
B. They cannot reproduce on their own
C. They are not made of cells
D. They do not contain genetic material (such as DNA)
What is the basic classification of viruses.
In other words, if you find a new virus, what is the first thing to determine?
A.
Is this a DNA or an RNA virus?
B.
Does it cause blue snotty nosed fever?
C.
does it have a vector?
D.
does it infect humans?
Chapter 15 Solutions
EBK WHAT IS LIFE? A GUIDE TO BIOLOGY
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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
- Which of the following refer/s to viruses? A. They are disease-causing. B. They contain DNA or RNA. C. They must have protection for their own genetic material. D. They are parasitic. A, B, C only A, B, C, D A, C, D B, C, Darrow_forwardtwo directly trasmitted viral diseases have the same basic reproduction number (R0 - R not) even though their dynamics are different. Which of the following differences between the two diseases could lead to the same basic reproduction number? a. one disease has a higher transmission rate and a longer recovery period than the other b. one disease has a lower transmission rate and a longer recovery period than the other c. one disease has a lower transmission rate and a shorter recovery period than the other d. for one disease, the recovert period is long; for the other, no one recoversarrow_forwardSelect all the following statements that are TRUE regarding viruses: □ All viruses are potentially dangerous to humans because any virus can infect any host. □ Viruses are fastidious pathogens that require complex growth media. □ Viruses are noncellular particles that take over the metabolism of a cell to generate more virus particles. □ Viruses are genomes made of RNA and DNA that lack many protein. □ Viruses can infect all other known life forms on earth, from Archaea to humans.arrow_forward
- A researcher, studying two different animal viruses (A and B) that infect the same cell type, digests away all the protein and transfers the nucleic acid directly into the host cell. Only virus B causes the infection. This suggests: a. Virus A is likely to be a naked virus. b. Virus A is likely to be an enveloped virus. c. Virus A is likely to be a -ssRNA virus. d. Virus A is likely to be a +ssRNA virus. e. Virus A is likely to be a dsDNA virus. And now explain why.arrow_forwardThe genome of which of the following types of animal virus can act directly as MRNA and be utilized by ribosomes without prior processing? O 1) retroviruses O 2) SSDNA viruses 3) -SSRNA viruses O 4) +SSRNA viruses 5) dsDNA virusesarrow_forwardWhich of the following is a commonality between coxsackievirus A16 infection and a varicella zoster infection?Choose one: A. Both infections are caused by viruses in the herpes family. B. Each disease is usually mild and self-limiting in children but is more severe in adults. C. Both viruses can cause a spotted rash to appear on the palms of the hands and soles of the feet. D. There is a vaccine available for both viruses.arrow_forward
- The following statements are correct, except? a. Non-enveloped viruses bind to their host cells via their capsid surface. b. The cell receptor may determine the host range and tissue tropism of viruses. c. Virus particles bind to receptors on their host cells to initiate entry. d. Naked virus particles bind via their transmembrane glycoproteins.arrow_forwardArrange the following list into the correct sequence for part of the cycle of a retrovirus: 1. dsDNA integrated into host DNA 2.viral proteins synthesized on host ribosomes 3. viral DNA uses host enzymes to transcribe viral RNA 4. reverse transcriptase catalyzes synthesis of ssDNA 5. synthesis of second DNA strand (a) 5, 2, 1, 3, 4 (b) 5, 2, 3, 4, 1 (c) 4, 5, 1, 3, 2 (d) 4, 1, 2, 3, 5 (e) 2, 1, 3, 4, 5arrow_forwardWhy are viruses not grouped into any of the six kingdoms? They are not capable of independent metabolic activity. O They are not capable of existing outside a host cell. O They are only capable of reproducing outside a host cell. O They are surrounded by a capsid that consists mostly of proteins.arrow_forward
- A patient is asked to participate in a trial using a bacteriophage to treat a Streptococcus infection. The patient is worried that she will end up with a viral infection rather than a Streptococcal infection. How would you address her concerns? – discuss the specificity of viral infections. How do they infect host cells, is that a random process?arrow_forwardDo you consider viruses to be alive? Take a position on the issue and perform research to find evidence in support of your argument. Share and discuss this evidence with your peers to come to a final consensus on whether viruses should be considered living organisms.arrow_forwardA virophage is best descirbed as:(a) A bacteriophage that requires a helper virus(b) An animal virus that can also infect bacteria(c) A giant virus(d) A phage that is used therapeutically to treat bacterialinfections(e) A satellite virus that inhabits its helper virus (i.e., itshost virus)arrow_forward
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