Which of the following statements about prions is FALSE? O A They are not viruses. O B They replicate by integrating themselves into the nucleus of a healthy cell. O C They are resistant to degradation due to their misfolded nature. O D They contain no genetic material. O E Transmissible Spongiform Encephalopathies are diseases caused by prions.

Q: The West Nile virus has what mode of transmission? a) Propagative b) Cyclo-propagative c)…

A: Answer- propagative

Q: Which of the following viruses causes chronic persistent infections? a. hepatitis B c. parvovirus b.…

A: Virus, irresistible specialist of little size and straightforward structure that can duplicate just…

Q: The envelope of an animal virus is usually derived from the _____ of its host cell. a. cell wall c.…

A: Animals, plants, and even microorganisms like archaea and bacteria are infected by viruses. In many…

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…

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A: Introduction  Herpesviridae is a large group of DNA virus which has around 135 types found in…

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: Poxviruses are considered unique among the DNA viruses. Where do poxviruses, such as variola or…

A: Viruses are often considered as an infectious agent, that has either DNA or RNA as their genetic…

Q: The process of creating conditions in which viruses evolve reduced virulence is attenuation.…

A: Virulence is the harm caused by pathogen infection, particularly in terms of host morbidity and…

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: Although a virus is very virulent now, it will eventually evolve to become much less virulent.…

A: A virus is a submicroscopic organism that contains genetic information either in the form of DNA…

Q: Viruses can avoid the human immune system by Intracellular reproduction Remaining inactive in a host…

A: Viruses avoid the human immune system basically by increasing the intracellular reproduction.…

Q: Capsid proteins are synthesized during which phase of viral replication? a. replication d.…

A: A virus refers to an infectious particle that possesses its genetic material enclosed inside a…

Q: Viruses are said to be “obligate intracellular parasites.” What does this mean with respect to how…

A: Viruses are infectious particles that requires host cell machinery to replicate. Viruses are…

Q: Which of the following is an example of viral species? a. Flavivirus O b. None of the choices human…

A: Introduction :    Viral species : " a monophyletic group of viruses whose properties can be…

Q: HIV is a virus that infects human beings, which of the following is not a characteristic of this…

A: HIV can result in AIDS if remains untreated for a long time as the virus attacks the immune system…

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: What happens to individual Vaccinia viral particles that do not possess the genes necessary to…

A: As we know that viruses are simple, noncellular entities consist of either DNA or RNA enclosed in a…

Q: A virus consists of a molecule of________ or_______surrounded by a(n)___________ coat. A virus…

A: Virus is a microscopic infectious agent that exhibit both living and non living properties. Virus…

Q: Since most of the diseases of modern times are caused by viruses, there are many antiviral drugs…

A: Antimicrobial drugs differ in their mode of action, including inhibition of cell wall, inhibition of…

Q: Which of the following viruses belong to retroviruses? O a. 5mall pox O b. None .. O c. Rabies O d.…

A: A retrovirus is a kind of virus that places a copy in the host cell's DNA of its RNA genome and…

Q: Which of the following is not associated with prions? a. Replicating shapes b. Mad cow disease c.…

A: An infectious agent is something that invades another living thing. Sorts of irresistible…

Q: Which BEST describes why it is difficult to develop antiviral drugs?. Oa Antivical drugs are very…

A: ANSWER;- c) Viruses are hard to target because they use the host cell's enzyme and ribosomes to…

Q: Which of the following statements about viruses is true?a) They contain DNAb) They contain RNAc)…

A: Viruses are obligate intracellular parasites that requires a living cell of the host for its…

Q: Properties of viruses include: a. ability to replicate in any environment b. visibility under…

A: The small microscopic organisms that cannot be seen with the naked eye are called microorganisms or…

Q: Which TWO statements regarding viral infection are TRUE? O Viral particles may be shed during the…

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Q: Which term best describes the specificity of a virus for its host? O lyticism O lysogeny tissue…

A: According to guidelines we have to answer the first question only. so please kindly post the…

Q: or the following are true about viruses? O They alone cannot reproduce themselves O They contain DNA…

A: Viruses are organisms that need host organisms to replicate. They use host cellular enzymes and cell…

Q: Virus particles are metastable because: O a. Translation is enhanced O b. It defines their host…

A: Virus particles are called as metastable because they have to be both stable and unstable at…

Q: The type of viral replication in which a bacteriophage inserts its DNA into the host genome and…

A: Bacteriophages is defined as a virus that infects the bacteria which varies a lot in shape as well…

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A: CJD stands for Creuzfeldt-Jacob Disease, which is a neurodegenerative disorder caused by an isoform…

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A: Vaccination is the practise of establishing immunity by injecting weakened or dead microorganisms…

Q: hich of the following is inconsistent with the central dogma? a) An RNA molecule that can…

A: Process of DNA molecule synthesis from another DNA molecule is replication. The synthesis of RNA…

Q: A complete functional virus that has the capacity to infect the living tissue.        A. NOTA B.…

A: The organisms that infect the other organisms or cells are called pathogens. Bacteria can infect…

Q: Which of the following is the most probable fate of a newly emerging virus that causes high…

A: The virus emerged as a new strain through mutation of the existing viruses. It can skip from one…

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: Which of the following is NOT a characteristic of viruses? they are smaller than prokaryotic cells…

A: Viruses have a simple structure made up of a nucleic acid (DNA or RNA) enclosed with a protein coat.…

Q: Which of the following is not used to culture viruses in the laboratory? A Guinea pigs B B cell…

A: Viral culture is a laboratory technique in which the ability of virus to infect the cell is tested…

Q: Viruses are able to only infect the cells of very specific species Which of the following host cell…

A: Viruses are the obligate parasite. They behave as living when they infects the living organism.

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A: A virus is a submicroscopic organism which contains genetic information either in the form of DNA…

Q: Why are vaccines and/or passive immunization the method of choice in the treatment or prevention of…

A: The immune system comprises cells and other biomolecules that prevent the invasion and infection of…

Q: The following characteristics vary between different types of viruses except Select one: O a.…

A: Viruses are obligate parasites because they cannot survive outside the host cell. They are…

Q: Choose the correct the correct answer Viral particicles contain both nucleic acid and protein and…

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

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A: Zika is a virus that a person can catch through the bite of an infected mosquito.The most common way…

Q: Which statement below is FALSE with regard to why viruses are not considered cell O viruses do not…

A: First statement: Viruses don't grow and divide but can be assembled from viral components within the…

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Q: Think about the cells that viruses infect. Pick out the correct statements below.   A. The host…

A: Introduction :- A virus is a small parasite that cannot reproduce by itself , it uses the host cell…

Q: Which of the following statements concerning viruses and human health false? O in many diseases…

A: Antibiotics are medicines used to prevent and treat bacterial infections. Antibiotic resistance…

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.