Which of the following statements is TRUE concerning viral envelopes?Only viruses with envelopes have their contents enclosed by a layer containing lipidsOnly 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.

Introduction:- Viruses are small obligate intracellular parasites, which contain either RNA or DNA…

Answered: Which of the following statements is…

Biology 2e

2nd Edition

ISBN:9781947172517

Author:Matthew Douglas, Jung Choi, Mary Ann Clark

Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark

Chapter21: Viruses

Section: Chapter Questions

Problem 1VCQ: Figure 21.5 Which of the following statements about virus structure is true? All viruses are encased...

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Figure 17.6 Influenza virus is packaged in a viral envelope, which fuses with the plasma membrane. This way, the virus can exit the host cell without killing it. What advantage does the virus gain by keeping the host cell alive?
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.
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.
What allows the membrane of the HIV and the membrane of the host to fuse? The virus capsid dissolves in the phospholipid bilayer of the host cell membrane The virus contacts proteins on the cell membrane of the host, and then the viral proteins undergo conformational changes The virus docks at a pore, which then pulls the virus into the cell membrane due to molecular attractions
The proteins on the surface of envelope viruses generally have to perform a few key tasks, including: (Choose all that apply) Translating viral proteins. Membrane fusion. Binding to molecules on the surface of host cells. Replicating the viral genome.
produce a diagram of the replication of a viral genome of stranded RNA simple [+] and mRNA production via Reverse Transcriptase. Produce a diagram of the replication and early maturation of a virus wrapped Produce a diagram of the replication and early maturation of a virus naked. Produce a diagram of the release of an enveloped virus by budding.
In electron micrographs of HSV infection, it can be seen that the intact virus initially reacts with cell-surface proteoglycans, then with specific receptors. This is later followed by viral capsids docking with nuclear pores. Afterward, the capsids go from being full to being "empty." Which of the following statements best fits these observations? The viral envelope is not required for infectivity, since the envelope does not enter the nucleus. The viral envelope mediates entry into the cell, the capsid mediates entry into the nuclear membrane, and the genome is all that enters the nucleus. Only the genetic material of the virus is involved in the cell's infectivity, and is injected into the host cell like the genome of a phage. Viral capsids are needed for the cell to become infected; since the full capsids enter the nucleus.
Which cellular organelle or structure produces viral envelope?* OEndoplasmic reticulum. Free ribosomes O Nuclear envelope. Plasma membrane ) Nucleus.
A virus that typically forms an envelope is now being prevented from budding out of the host cell. Would this virus still be considered infectious? Why or why not? Please explain in detail.
Which of the following components of a virus is NOT encoded by its own genome? O capsid of HIV O lipid bilayer of HIV envelope O spike glycoproteins of HIV envelope O anchoring structures of bacteriophage
Which of the following highly contagious viruses is a single-stranded ribonucleic acid (RNA) virus with a helical capsid and envelope and is transmitted by coming in contact with respiratory secretions? "This is a highly contagious respiratory illness transmitted when an infected person coughs or sneezes virus particles into the air," the health department said in a written statement. "It's so contagious that if one person is sick and spreading measles, nine out of 10 people around them who aren't immune will get it, too." Group of answer choices a. Measles b. Parvovirus c. Coxsackie virus A d. Rhinovirus
Rhinovirus, the most common cause of colds, do not have a lipid envelope. Compared to enveloped viruses these and other nonenveloped viruses tend to remain infectious outside the body longer, are more likely to be spread by contact with surfaces, and are likely to be rendered harmless by exposure to hand sanitizer or hand washing. Explain how the lack of an envelope could contribute to these characteristics.

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