The envelope of enveloped -viruses : a. Determines the viral morphology b. Both choices are false c . Protects the viral genome d. Both choices are correct

Q: Compare the structures of tobacco mosaic virus (TMV) and influenza virus

A: The virus is microscopic and is even smaller than bacteria. They have their genetic material…

Q: Answer the following regarding the varicella-zoster virus: a) the biology of the virus ( type:…

A: Varicella-zoster virus is the virus responsible for causing chickenpox and herpes zoster. Primary…

Q: For a virus to be able to infect a cell, it must   A. Be able to specifically bind to receptors on…

A: Virus are the infective protineous coat found inside a living organism or in extreme conditiin like…

Q: Compare the structure of the influenza and Bacteriophage T4 viruses.  Include the nuclear material,…

A: Viruses are non-cellular organisms that are characterised by having an inert crystalline structure…

Q: Receptor molecules can determine the or tendency of a virus to infect a particular tissue type…

A: Tropism is measured by the presence of virus receptors on the surface of a host cell for several…

Q: Which of the following statements is TRUE concerning viral envelopes? O Only viruses with envelopes…

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

Q: D) polyhedral The first step in viral infection is the recognition between the virus and the host…

A: The virus is a microscopic organism that infects other cells to survive. The virus can only…

Q: Discuss ways that you might distinguish whether an infectious disease in mice is caused by a virus…

A: Infectious diseases can occur by infectious agents that are protozoa, viruses, bacteria, and fungi.…

Q: a. What characteristics of viruses could be used to describe them aslife forms?b. What makes them…

A: A microorganism is a microscopic organism, which may exist in its single-celled form or in a colony…

Q: A prophage occurs during the reproduction cycle of Select one: O A. A lysogenic virus. O B. Alytic…

A: Viruses possess two types of life cycle: lytic cycle and lysogenic cycle. The lysogenic cycle of…

Q: The drugs used against HIV in AIDS therapy are not effective against the flu because a. HIV is an…

A: ANSWER -The medicines used against HIV for AIDS does not work against Flu to and this first to…

Q: Which statements are accurate regarding properties of viruses? Select allthat apply. a. Viruses are…

A: The virus is microscopic and is even smaller than bacteria. They have their genetic material…

Q: During viral infection, attachment is usually specific to a particular celltype becausea. the virus…

A: Viruses do not come under the categories of Prokaryotes or Eukaryotes as they exhibit the dual…

Q: What is an envelope? What are spikes (peplomers)? Why do some enveloped viruses have pleomorphic…

A: A virus is a microorganism that has an infectious property. It cannot reproduce by itself.

Q: Rhinovirus, the most common cause of colds, do not have a lipid envelope. Compared to enveloped…

A: Viral envelope is a loose membranous covering that occurs in some animal viruses, rarely plants and…

Q: What component is common for all viruses? a) Ribosome b) DNA c) RNA d) A protein coat e) A…

A: Virus An infective agent that typically consists of a nucleic acid molecule in a protein coat, is…

Q: Mention one significant function of capsid in virus.

A: Virus is a nucleoprotein entity which able to utilize the synthetic machinery of a living cell of…

Q: Classification of viruses is based on all of the following excepta) type of nucleic acid.     b)…

A: Viruses are the acellular organisms. These are the microscopic structures consists of genetic…

Q: 3. (a). Illustrate and describe the lytic and lysogenic cycles for the production of viruses. (b).…

A: Introduction :  A prokaryotic organism with only one cell is a bacteria. They lack a nucleus and…

Q: Ribosomes are the only organelles present in all viruses. a. True b. False

A: Ribosomes are a cellular organelle present inside the cell which are primarily designed for the…

Q: Explain how the attachment of viruses to bacterial cells is different from the attachment of viruses…

A: Any infectious agent or microorganism (Virus, bacterium, protozoa, ETC) that can cause disease is a…

Q: a. What dictates the host range of animal viruses?b. How is the influenza virus different in its…

A: Viruses are the living organisms characterized by the ability to behave like a living organism…

Q: Compare and contrast bacteria cells and viruses.

A: Microscopic organisms occur as “uni-or multi-cellular” along with cluster of cells. There are…

Q: Find the wrong information about virus attachment and absorption to host cell. A. The surface…

A: Viruses are simple, noncellular entities consisting of one or more molecules of either DNA or RNA…

Q: After attachment and entry, the next step of viral lifecycle is to…

A: To complete their life cycle, the viruses require a host cell. This is due to the fact that they…

Q: How does soap kill coronavirus?  B. Why virus can not be washed off with water along?  C. Why soap…

A: Coronavirus can be prevented by practicing good hand hygiene. The best technique to eliminate…

Q: A virus with an envelope is most likely  A. an animal virus  B. better able to hide from the hosts…

A: when virus infect a cell , it penetrate the cell membrane and reaches the nucleus . after its life…

Q: Discuss how the components of viruses assemble to make new virus particles. What is the difference…

A: The viruses consist of two parts, primarily which include nucleoid and capsid. Assembly of nucleoid…

Q: Which receptor of the influenza virus is most involved in binding tothe respiratory cells?a.…

A: The influenza virus is the causative agent of infection disease known as influenza also called flu…

Q: A. How would a virus look under darkfield microscopy? B. Before a virulent virus can undergo…

A: Viruses are non cellular organisms that are characterised by having an inert crystalline structure…

Q: Structurally, a virus consists of a. DNA and RNA b. Capsid c. Protein molecule at its core d.…

A: The virus are classified as intermediate form in between the living and non-living materials. They…

Q: An experimental drug therapy to treat patients with antibiotic-resistant bacteria involves…

A: phage therapy depends on the choice of phage/s. a cocktail of multiple phages that display a wider…

Q: The envelope of an animal virus is derived from the of its host cell.   Select one: A.  Cell wall…

A: Viruses are considered acellular but they are able to replicate inside the host cell. They do not…

Q: Which structure of a virus protects it from degradation, contains its genome, and enables it to be…

A: Virus is a microscopic organism that vary in size and shape and cause harmful infectious diseases.…

Q: A prophage occurs during the reproduction cycle of Select one: O A. A lysogenic virus. B. A lytic…

A: Virus is a microorganism that is neither prokaryotic or eukaryotic. This is because the virus…

Q: All of the following statements correctly describes the properties of Influenza A virus EXCEPT…

A: Influenza A viruses are negative-sense RNA viruses with  single-stranded, segmented RNA viruses. The…

Q: Which of the following is characteristic of all viruses?   A. A protein capsid.   B. a viral…

A: Viruses are classified as non-cellular, tiny infectious agents. They can only replicate inside the…

Q: Which measurement is most reasonable for a virus? a. 65 nanometers b. 1 micrometer c. 900…

A: Virus  The virus are the submicroscopic infectious particle that only replicate inside the living…

Q: a. How are viral envelopes formed? Why are enveloped viruses that infect plants and bacteria rare?…

A: Hi! As you have posted multiple questions, I will be answering the first question for you. If you…

Q: Which of these is not a general pattern of virus morphology?a. enveloped, helical b. naked,…

A: Virus is generally a nucleoprotein and ultramicroscopic entity which only becomes active inside a…

Q: Which of the following does NOT inititiate DNA synthesis ? (correct answer e) a. a single-stranded…

A: Deoxy ribo nucleic acid (DNA) is the genetic material of most organisms and it contains coded…

Q: Briefly describe how the variola virus acquires multiple envelope membranes from an infected cell.

A: Indefinite maintenance of a virulent disease in populations of varied sizes depends on 3 factors:…

Q: Explain one structural distinction between viruses and cells.

A: Cell is the basic and fundamental unit of life. All organism more complex than the viruses consists…

Q: A patient presents at the clinic with an acute viral infection. Assays that analyze the viral life…

A: Viruses are not living cells, viruses are packs of genetic materials enclosed within a protein coat.…

Q: Describe a drug therapy that has been used for patients infected with SARS CoV2.  What does it…

A: There are few important points : This disease is caused by virus called as covid-19 and has been…

Q: Rhinoviruses, the most common cause of colds, do not have a lipid envelope. Compared to enveloped…

A: Viruses are considered to be connecting link between the living and non-living. They are obligate…

Q: Explain that a virus can’t be treated with an antibiotic and why.  Think about selective toxicity…

A: Explain that a virus can’t be treated with an antibiotic and why.  Think about selective toxicity…

Q: What allows the membrane of the HIV and the membrane of the host to fuse? The virus capsid dissolves…

A: Human Immunodeficiency Virus (HIV) infects the other cells by fusing its viral envelope with the…

Q: Moderna and Pfizer vaccines for COVID-19 use mRNA to the Spike protein combined with lipids. Which…

A: Moderna and Pfizer are made from mRNA (messenger RNA), these vaccines deliver the genetic…

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.