Concept explainers
Introduction:
The protein coat of the virus is classified according to its structure. Some viruses have envelop that means a lipid membrane that is called capsid. There are various types of protein coat such as icosahedral, helical, prolate.
Answer to Problem 1TY
The correct answer is option (c) capsid.
Explanation of Solution
Explanation/justification for the correct answer:
Option (c) capsid. A capsid is a protein covering of a virus. The structural subunit of proteins is protomers. The genetic material is enclosed within the capsid. The helical and icosahedral capsids are found in the majority of viruses. So, the correct answer is an option (c).
Explanation for incorrect answer:
Option (a) host.Viruses are dependent on the host or living cells for the process of reproduction. Hence, the given option is not correct.
Option (b) Prions. Prions are protein particles that cause disease, and prions are not the component of the virus. Hence, the given option is not correct.
Option (d) viroid. Viroids are an infectious particle, smaller than viruses. Hence, the given option is not correct.
Option (e) cell wall. A virus does not contain a cell wall. Viruses have a protein coat instead of a cell wall. Hence, the given option is not correct.
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Chapter 17 Solutions
PRINCIPLES OF BIOLOGY WITH CONNECT ACCE
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- Figure 21.5 Which of the following statements about virus structure is true? All viruses are encased in a viral membrane The capsomere is made up of small protein subunits called capsids. DNA is the genetic material in all viruses. Glycoproteins help the virus attach to the host cell.arrow_forwardIs a nucleus cell or virus.arrow_forwardIf an animal virus does not lyse the host cell and does not produce symptoms, it is best described as morbid. chronic. latent. non-infectious.arrow_forward
- The illustration best describes: A dormant bacterial infection A dormant viral infection An active bacterial infection An active viral infectionarrow_forwardThe envelope of an animal virus is derived from the_______________of its host cell.a. cell wallb. membranec. glycocalyxd. receptorsarrow_forwardAnalogies DNA or RNA : Virus:: A. capsid : viral envelopes B. RNA : DNA C. White blood cell: Hiv D.TMV: bacterial cellarrow_forward
- Name 1 cellular process that some viruses exploit to enter cells. Give an example of a virus that uses this process and explain in 2-3 sentences how the virus exploits that processarrow_forwardgive me information on one RNA or DNA virus that infects fungi, invertebrates or vertebratesarrow_forwardprophage is a stage in the development of a/ana. bacterial virus. b. poxvirus.c. lytic virusd. enveloped virusarrow_forward
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