A complete functional virus that has the capacity to infect the living tissue. A. NOTA B. Virophage C. Viroid D. Bacteriophage E. VIRION
Q: If the HIV did not have a reverse transcriptase enzyme, then which of the following would apply?…
A: Human immunodeficiency virus (HIV) is a retrovirus that comprise a large and diverse family of…
Q: A researcher, studying two different animal viruses (A and B) that infect the same cell type,…
A: Viruses are non-living infectious agents that can replicate only within the living cells of a host…
Q: The genome of a virus consists of (a) DNA (b) RNA (c) prions (d) DNA and RNA (e) DNA or RNA
A: Viruses are obligate parasites that can reproduce only inside the host cells. They also do not have…
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: The ebola virus is ______ times larger than the rhinovirus. A. same size B. 10 C. 100 D.…
A: A virus is a submicroscopic organism which contains genetic information either in the form of DNA…
Q: The virus that causes COVID 19 has characteristics of both the common cold and the virus that causes…
A: COVID-19 is caused by infection with the severe acute respiratory syndrome coronavirus 2…
Q: What is a virus pandemic? a) A sharp and rapid epidemic involving more than one country b) An…
A: The influence of virus and its infection depends on the geographical areas on which it spreads, food…
Q: RNA viruses require their own supply of certain enzymes because(A) host cells rapidly destroy the…
A: Viruses are defined as infectious agents that can survive only by invading the living cells. They…
Q: Viral “spikes” are usually involved in A. Uncoating the virus particle B. Killing the host cell…
A: The small microscopic organisms that cannot be seen with the naked eye are called microorganisms or…
Q: Why are encapsolated bacteria generally more pathogenic than un-capsolated strains. a. Because…
A: The capsule is a layer of polysaccharide found outside the cell envelope of bacteria. Capsule gives…
Q: what impact could a mutation that makes the binding to the ACE-2 receptors stronger have on a…
A: virus are obligate parasites ,which becomes active when inside a living cell . they use many…
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: Clear patches in cell cultures that indicate sites of virus infection are called a. plaques. b.…
A: Viruses are those microorganisms and they can live inside the host cells or other living things.…
Q: What are the types of in vitro virus cultivation systems (Choose all that applies) A. Animal cell…
A: In vitro culture refers to the process of cultivating cells that are derived from the organism in a…
Q: Which of the following refer/s to viruses? A. They are disease-causing. B. They contain DNA or…
A: Introduction: Viruses are non-cellular microscopic particles that can replicate inside the living…
Q: Which receptors of the infl uenza virus are responsible for binding to the host cell? a.…
A: The influenza virus has negative stranded RNA virus encapsulated by the M1 matrix protein. the…
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: The viral ________ play(s) a role in attaching a virion to the host cell. a. core b. capsid c.…
A: A virus consisting a naked capsid goes into the cell by attaching to the attachment factor present…
Q: Which of the following are hosts of West Nile virus which are also responsible for infecting…
A: The illness caused by micro-organisms like bacteria, parasites, fungi and acellular organisms like…
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: Virus spikes are commonly associated with which of the following? a. Non enveloped viruses b.…
A: Virus have spikes protein.
Q: Match the following: a.naked, polyhedral DNA virus b.enveloped, polyhedral DNA virus c.enveloped,…
A: Characteristics of viruses- acellular, can not replicate unless inside of a cell, metabolically…
Q: The first virus studied that led to the term "filterable virus" was rabies?
A: Filterable virus is a virus that is very tiny so that they can pass through a fine-pored filter like…
Q: Polio and hepatitis A viruses are ___________ viruses.a. arbo b. enteric c. cold d. syncytial
A: The virus is microscopic and is even smaller than bacteria. they remain inactive or in the form of…
Q: what could be the root causes why the COVID-19 Virus continue to spread? Name 5 main causes..
A: Viruses are infectious microparticles that cannot replicate independently. They infect the…
Q: Viruses in the Herpesviridae family are double-stranded DNA enveloped viruses. Specifically the…
A: Viruses belonging to Herpesviridae family such as chicken pox and shingles virus are are…
Q: Propose an explanation for why during the history of the discovery of viruses they were first called…
A: following is discussion regarding history of viruses and why they were initially labelled as…
Q: The Size of Viruses varies from: a. 1-100 nm b. 25-300 nm c. 100-1000 nm d. None of the above
A: A virus is an infectious microbe consisting of a segment of nucleic acid (either DNA or RNA)…
Q: The envelope of an animal virus is derived from the of itshost cell.a. cell wall b. membrane c.…
A: Viruses are small infectious agents that can replicate only inside a living cell. They infect both…
Q: dsDNA viruses can have more genetic material than SSRNA viruses because: a. RNA catalyzes its own…
A: Deoxyribonucleic acid (DNA) is a hereditary molecule that passes genetic information from one…
Q: particular animal virus requires the use of DNA polymerase from its host, since it does not possess…
A: A virus is a pathogenic microorganism that is found everywhere on earth. Viruses cause infection in…
Q: Regarding enveloped viruses, which of the following is true of the viral envelope? A. It has the…
A: Enveloped viruses have a lipid membrane coating. Viruses with a lipid membrane are those that have a…
Q: A virus needs a ______ cell in order to reproduce. A. Large B. Host C. Weak D. Dead
A: Viruses are microorganisms who possess DNA or RNA as their genetic material. They gain entry to…
Q: Which of the following is NOT used to treat active viral disease? a. Vaccines b. Antiviral drugs c.…
A: Viruses cause a variety of diseases in humans. Many of these diseases can be prevented by the use of…
Q: Emerging viruses arise by(A) mutation of existing viruses.(B) the spread of existing viruses to new…
A: Viruses are the pathogenic agents that cause several diseases in humans as well as in animals and in…
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: Within a few weeks of treatment for herpes virus with the drug isonazide, a patient's herpes virus…
A: Herpes simplex virus is divided into two types as: herpes simplex virus-1 and herpes simplex…
Q: A" is a retrovirus. It can integrate DNA into random sites of human genome. Another virus "B" can…
A: Gene therapy is a modern experimental technique that makes use of genes in treating and preventing…
Q: Please refer to the passage to help you answer this problem. Which of these characteristics is NOT…
A: Viruses- they are agent with small size and simple composition that can multiply only in living…
Q: Viral tropism refers to: A: The variety of organisms that the virus can infect B: The types of…
A: The cellular and host tropism of viruses is among the most essential and notable properties of…
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: To infect their specific host cells, viruses go through these chronological steps EXCEPT a.…
A: For infecting host cells, virus uses host cell process to replicate. During the replication of virus…
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: Which of the following viruses can be oncogenic in humans?a. papillomavirus b. Epstein-Barr virus…
A: Virus - Virus is a microscopic infectious agent which infects other living cells. Virus is made up…
Q: To cause a human pandemic, the H5N1 avian flu virus wouldhave to(A) spread to primates such as…
A: Avian flu virus is the influenza virus that causes infections in humans. The acute respiratory…
Q: In recent history we have been fairly successful in eradicating or substantially diminishing the…
A: Eradication refers to the global incidence of infection caused by a certain agent permanently…
Step by step
Solved in 5 steps
- To infect their specific host cells, viruses go through these chronological steps EXCEPT a. Release of progeny viruses b. Absorption and penetration of the viral particles c. Uncoating of the nucleic acid of the viral particles d. Synthesis and assembly of viral particle componentsDescribe the properties of virus particles that contribute to their survival in the environment and transmission to cause human infectionExplain how a virus can be genetically engineered to make it highly virulent and infectious
- You discovered a novel virus causing a new disease. Briefly describe how will you go about characterizing it to prove that it is indeed a novel virus.A patient presents at the clinic with an acute viral infection. Assays that analyze the viral life cycle classify the virus into Group V with a segmented genome. Which virus is the most likely diagnosis for the patient? a. Rabies virus b. Picornavirus c. HIV-1 d. Influenza A virusWhich of the following does NOT inititiate DNA synthesis? a. a single-stranded DNA virus. b. a (-) single stranded RNA virus c. a (+) single stranded RNA virus d. a double-stranded DNA virus (Poxviridae) e. Both (-) and (+) single-stranded RNA viruses
- Explain why a virus can only infect specific cells andorganisms.a. Since viruses lack metabolic enzymes, how can they synthesize necessary components? b. Name some enzymes that viruses may have for invading and completing their cycles.You are a scientist developing a vaccine against a newly discovered animal virus. What part of the virus would you target your vaccine against and why?
- Give one example of a segmented virus and describe how the structure of the virusinfluences its pathogenicity.Explain what a virus is and how it is structured.Which of the following statements about viruses is false? a. Viruses require a host cell to reproduce. b. Viruses are sensitive to interferons. c. Viral infections can generally be controlled with antibiotics. d. Viruses encode their own genome.