Answered: The two components common to all…

The two components common to all viruses are nucleic acid (either DNA or RNA) and protein coat called a “capsid.” True False

Concepts of Biology

1st Edition

ISBN:9781938168116

Author:Samantha Fowler, Rebecca Roush, James Wise

Publisher:Samantha Fowler, Rebecca Roush, James Wise

Chapter17: The Immune System And Disease

Section: Chapter Questions

Problem 1ACQ: Figure 17.5 Which of the following statements about virus structure is true? a. All viruses are...

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Concept explainers

Virus

Viruses are infectious microscopic agents that can only reproduce in live cells of animals, plants, or microbes and are smaller than bacteria. Vertebrates, invertebrates, plants, protists, and fungi are among their many hosts. Viruses are unable to multiply on their own due to the lack of necessary cellular machinery, but they can guide the cell machinery of a host to make additional viruses by infection. The virus enters and attaches to a particular host cell, injects its genetic material, and reproduces by using the host’s genetic material. Viruses cause infection by taking entry into the host cell and using the host cell’s enzymes and raw materials to multiply.

Question

he two components common to all viruses are nucleic acid (either DNA or RNA) and protein coat called a “capsid.”

The two components common to all viruses are nucleic acid (either DNA or RNA) and protein coat called a “capsid.”

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False

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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.
Classification of viruses is based on all of the following excepta) type of nucleic acid. b) shape of virus.c) size of virus. d) host infected.e) strandedness of nucleic acid.
All viruses contain nucleic acid and a capsid. True or false?
What component is common for all viruses?a) Ribosomeb) DNAc) RNAd) A protein coate) A protective envelope
According to Capsid structure, which among the following pairs is CORRECTLY matched? a. Mumps viruses : : naked helical b. Parainfluenzae viruses : : enveloped icosahedral c. Influenza viruses : : enveloped icosahedral d. Hepatitis A viruses : : naked icosahedral
What is a common feature found in all viruses?a. An envelopeb. DNAc. Nucleic acid surrounded by a protein capsidd. All of the above can be found in any virus.
Which of the following is true about capsid? There could be more than one answer. Present in both enveloped and naked virus. Composed of individual protein molecules called capsomeresiral nucleic acid. Houses the viral nucleic acid. Capable of self-assembly. Not present in coronavirus
TRUE or FALSE: All icosahedral viruses are enveloped. - Bacteriophages containing icosahedral heads attached to helical tails have this type of capsid structure: Modified Complex Icosahelical Helicosahedron
The relative amounts of each nitrogenous base are tabulated here for four different viruses. For each virus listed in the following table, indicate whether its genetic material is DNA or RNA and whether it is single stranded or double stranded. Explain your reasoning. Virus T C U G A I 0 12 9 12 9 II 23 16 0 16 23 III 34 42 0 18 39 IV 0 24 35 27 17
The different major groups of viruses (families) differ in: host range. the type of genetic material they have. virion size. genome size. presence or absence of an envelope.
What are two things that are true about all known viruses? Hint: one relates to the virus itself, the other relates to the ability of the virus to reproduce (replicate).
A virus that has which type of genome must carry replicase within the viral particle? (choose all that apply) ds DNA ss (+) DNA ss (–) DNA ss (+) RNA ss (–) RNA Which viral type has a genome that can be directly translated? (choose all that apply) ds DNA ss (+) DNA ss (–) DNA ss (+) RNA ss (–) RNA