For a virus to be able to infect a cell, it must   A. Be able to specifically bind to receptors on the cell surface   B. Collide with the cell with sufficient force to break through   C. Be unrecognizable by local leukocytes   D. First inject an enzyme probe in to the cell

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: Enveloped viruses enter host cells through ____________ and leave cells through _____________. Check…

A: Virus are microscopic entities just like other microbes but are even tiny than bacteria . They enter…

Q: The five stages of the bacteriophage lytic cycle occur in this order:a. penetration, attachment,…

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

Q: Which of the following compounds represents a peptidoglycan specific antibiotic ? A. tetracycline B.…

A: Peptidoglycan is a layer present in bacterial cell wall, It is a basic unit. due to its structure,…

Q: Which of the following proteins would you expect a mutation in for a virus to infect a new host…

A: Mutation alters the nucleotide sequence of the genome of virus.

Q: How does a retrovirus prepare its genetic material for incorporation into the host cell genome?   a.…

A: Retrovirus enters the host cell through the attachment of their surface proteins. Retrovirus is an…

Q: A virus is isolated, and individual virions appear spherical. What type of virus is this? A.…

A: The essential construction or structure of a virus is comprised of a hereditary information molecule…

Q: Viruses may include of any of the following structures, EXCEPT: a. DNA   b. ribosomes…

A: Viruses are the small microorganisms that are parasites to humans, plants and other organisms. These…

Q: Which of the following is true?   A. Viruses cannot reproduce outside a host cell.   B. Prions…

A: Introduction : Viruses : Viruses Are Microscopic Infectious Organisms That Can Only Multiply Inside…

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: Match the best possible fit for the following Animal virus replication stages. A. Attachment B.…

A: Viruses contain nucleic acid/ribonucleic acid in the core region while the exterior/…

Q: Viruses code for their own independent protein synthesis. A. True B. False

A: The mechanism by which cells make proteins is known as protein synthesis. Transcription and…

Q: In general, RNA viruses multiply in the cell __, and DNA viruses multiply in the cell __. a.…

A: Viruses are microscopic organisms that cannot be seen with naked eyes. The most unique nature of the…

Q: 73) Provirus is a term to describe a. The empty capsid without the genome in case of viruses with…

A: Provirus is the viral form that is integrated into the host cell DNA and replicate to transmit them…

Q: (-)ss RNA viruses carry RNA polymerase within the particle. A. true B. false

A: RNA polymerases are the main enzymes that synthesizes RNA from a DNA template. During transcription…

Q: We now have at least three SARS-CoV-2/COVID-19 vaccines approved by the FDA for use in the United…

A: The vaccines are: 1. Pfizer-BioNTech – Authorized on December 11, 2020 2. Moderna – Authorized on…

Q: Which of the following statements seemingly refute the fact that viruses are nonliving? A.They…

A: Viruses may or may not be alive, according to scientists. Generally, scientists employ a set of…

Q: Viruses are host-specific, meaning they can only infect specific types of host organisms. For…

A: Viruses are acellular organisms. They become active once they enter inside an organism and can…

Q: 97) In order for a retrovirus to be infectious a. The p25 protein is cleaved by the protease enzyme…

A: Introduction: Retroviruses are a family of viruses that are grouped together based on how it is…

Q: FIGURE 4. The human protein known as PCNA [proliferating cell nuclear antigen] interacts with the…

A: The question asked pertains to a recent study on how the SARS-CoV-2 virus, which causes COVID-19,…

Q: Ti plasmid carrying a foreign gene is inserted into which bacterium that infects a plant cell?   a.…

A: The Ti plasmid vector is used in the world of plant genetic engineering with the aim of introducing…

Q: You have been hired by a major pharmaceutical company to develop a new vaccine to prevent COVID-19…

A: Virus comes from the Latin word venom which mean poisonous substance that may cause some serious…

Q: The contents of a plaque may not always contain a clonal population of phage if: a. Identical…

A: Plaque:- phage infected bacterium usually burst and releases a number of daughter phages which…

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: 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…