a typical eukarytic cell has a diameter of 50 microns while a corona virus particles has a diameter of 100 nanometers.  how many virus particles could be packed into the volum of the typical eurkaryotic cell? (assume the cell and the virus are spherical - V = 4/3 π R^3 and that the particles can use 100% of the space in the cell)

Q: Certain drugs to combat human viral diseases affect spike glycoproteinsin the viral envelope.…

A: A virus is a very tiny microorganism that does not have the capacity to survive on its own and…

Q: The genetic material of virus includes (a) only RNA. (b) only DNA. (c) RNA and DNA both (d) RNA or…

A: The genetic information carried by the genetic material in plants, animals, humans and transmits the…

Q: Why are viruses with lipid-containing envelopes relatively susceptible to certain biocides?

A: Virus  Viruses are the infectious particles that contains either DNA or RNA as a genetic material.

Q: That model includes two constants, “transm" and "recov;" use Ct instead of "transm," and use cr…

A: a) Equation for S'(t)   dS/dt=-aSI b)Equation for I'(t)    dI/dt=-aSI-bI c)Equation for R'(t)…

Q: A patient is diagnosed with a viral infection, and the doctor wants to determine whether the virus…

A: Viruses causes various diseases in animal, human and plants. They are intracellular parasites.…

Q: How does the wavelength of light relate to its energy? What are the two main types of viral…

A: The sun is the ultimate source of energy. Sunlight consist of many waves of lights having different…

Q: How much smaller is a virus than a bacterial cell? Than an animal or a plant cell?

A: Viruses are submicroscopic particles found in regions where living organisms such as bacteria,…

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: Viruses replicate by entering a cell and using the host cell's enzymes to produce more copies of…

A: 1- Volume of sphere- 4/3πr3 2- Volume of cylinder= πr2 h Diameter= 2r Here: π=3.14 r=radius of…

Q: Explain how Stearic acid works again virus and kill virus? Explain the mechanism of action? Please…

A: Stearic acid prompted development constraint at absorption less than 50 μM, because higher…

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: ach virus bind to a specific cell surface receptor for attachment, so prevention of viral attachment…

A: Microorganisms or microbes are tangible objects that appear under a microscope. Large groups of…

Q: why do viruses repeat the same capsid protein subunits more than one time rather than having…

A: A capsid is a protein shell of virus which enclose it's genetic material. It consists of several…

Q: The assembly of new viral capsomeres and nucleic acid molecules take place with the help of an…

A: A virus is a small infectious agent that replicates only inside the living cells. A virus is idle…

Q: Which of the following hypothetical viruses could NOT replicate in a host cell? It assumes that…

A: The correct answer would be option A i.e., the virus has ssDNA genome and replicates in the…

Q: You are a virologist studying a newly isolated viral strain and have sequenced its genome. You find…

A: Option A is correct.

Q: A naked (non-enveloped) virus ONLY has a/an O nucleocapsid O envelope O antigenic surface O caporite…

A: The viruses are classified as both living as well as non-living. When they are present outside of…

Q: Why must viruses repeat the same capsid protein subunits over and over again, rather than having…

A: The viral genome is enclosed by a protein coat known as the capsid, which will protect the genome…

Q: You use 0.1 ml of the stock of virus which you titrated in question #5 to infect 1 million cells.…

A: To calculate the MOI (Multiplicity of Infection), you need to divide the number of infectious units…

Q: The molecular weight of the RNA of poliovirus is 2.6x106 amu. How long would it take for it to…

A: RNA is a linear polymer of nucleotides that contains the nitrogenous base, ribose, and a phosphate…

Q: which of the following has no "quartnary structure"? O multimeric protein, such as haemoglobin or…

A: Quaternary structure refers to the spatial arrangement of subunits and the nature of their…

Q: Palivizumab is a humanized monoclonal anitbody for the prohylaxis of resporatory diseases caused by…

A: The virus is the submicroscopic infectious agent which infect the host cells like plant, animal or…

Q: Why have HIV protease inhibitors such as retinovir have been formulated into soft gelatin capsules?

A: HIV protease is antiretroviral drug. The medicine works by inhibiting the activity of HIV protease…

Q: An antiprotozoal drug that functioned by interfering with ribosome function in eukaryotes would be…

A: Protozoans belong to the kingdom of unicellular eukaryotes known as the kingdom Protista.…

Q: can you explain why Bacillus anthracis can be pathogenic in a mouse and not be fought off by the…

A: Anthrax, a severe infection originating from the bacterium Bacillus anthracis, is a matter of…

Q: Why is there an inverse relationship between the dilution factor and the amount of virus in…

A: The dilution factor is the calculation of how much a new solution is less concentrated than the…

Q: What technique must be used to visualize a virus?

A: Viruses are an acellular parasite that are not able to reproduce on their own. It is not considered…

Q: You have several different media onto which you inoculated eight strains of yeast (A-H). The media…

A: Minimal medium (unsupplemented) A minimal medium is a growth medium used for growing microbes and…

Q: + 13. Compare the following: Virus N/A Domain Size Genome (RNA, DNA, both) Organelles? Which are…

A: virus A length of nucleic acid (either DNA or RNA), encased in a protein coat, makes up a virus. A…

Q: . Why is it helpful that the transmission compound light microscopes we studied in the lab are both…

A: A microscope is a scientific tool used to examine objects that are too small to be seen with the…

Q: 2.4 SARS-CoV-2 is mainly transmitted through respiratory droplets when an infected person sneezes,…

A: SARS CoV-2 virus is a betacoronavirus.They are enveloped , positive sense ,single stranded RNA virus…

Q: Which of the following events mostly involves hydrolysis reaction after the virus infects a…

A: Question -Which of the following events mostly involves hydrolysis reaction after the virus infects…

Q: How would you describe the kind of capsid found on this virus fromfigure ? In what ways is this…

A: A virus is submicroscopic infectious particle that replicates only inside the living cells of an…

Q: 4. These molecules are: A. proteins B. nonapeptide С. рolypeptide D. aminopeptide

A: Many MC questions: “Since you have asked multiple questions, we will solve the first question [4]…

Q: After replication at the site of entry, some viruses remain localized, while others disseminate.…

A: The correct answer is: Presence of a lipid membrane on the virion.Here's why:Presence of a lipid…

Q: A virus has a double-stranded DNA genome that has 800 base-pairs. Of these, 21 % are thymine. How…

A: Total number of DNA base pairs= 800 (1600 single bases) As per Chargaff's rule, the amount of purine…

Q: You have a petri dish containing 2 x 106 cells and you add 2 x 105 pfu of virus to the dish. What is…

A: The multiplicity of infection(MOI) is the ratio of infectious pathogens (viruses or virions) to…

Q: The N-95 mask is considered to be one of the safest masks. It’s pore size is 0.3 um. If that is so,…

A: In the current situation covid is affecting quite a lot and several effective measurements are taken…

Q: viral stock

A: MOI -> multiplicity of infection PFU -> plaque forming units Number of cells * desired MOI =…

Viral Replication

The virus is acellular and considered non-living outside the host cell. The replication of the virus occurs only inside the living cells. Only a few genes are present in the smallest virus, whereas many genes are present in the largest virus. These genes encode specific viral proteins.