Section three. Match virus biosynthesis term with best description. Not all answers are used. RNA-dependent RNA polymerase f. phage conversion а. b. lytic cycle g. prophage ss sense (+) RNA viruses h. ss anti-sense (-) RNA viruses с. d. reverse transcriptase i. lysogenic cycle provirus е. 51. genetic change of the host cell during the lysogenic cycle of bacteriophages 52. RNA → DNA enzyme 53. active/fast infection of bacteria by a virus 54. when an animal virus integrates into the host cell chromosome 55. enzyme needed for transcription of RNA into complementary RNA 56. contains the coding strand of RNA 57. contains a nucleic acid that cannot be translated directly

Q: 5. Parvovirus B19, which is FLASE A. is single-stranded RNA B. infects humans only C. is highly…

A: parvovirus B19 was the first known human virus in the family Parvoviridae, genus Erythroparvovirus.…

Q: 40. Which of the following is not bacteriocidal? a. rifampin b. tetracycline c. lytic bacteriophages…

A: Antibiotics can be broadly  classified  into two major groups. They are bacteriostatic and…

Q: 8. To observe bacteriophage in a lab, you would plate dilutions of the phage onto lawns of bacte-…

A: The plaque examine depends on consolidation of host cells, specially in log-stage development, into…

Q: 92) The rate of viral mutation a. Is higher in negative single stranded RNA viruses than positive…

A: ANSWER) (d) Is higher in negative single stranded RNA than the single stranded DNA

Q: For viral pathogenesis, the incubation period

A: It is option a.

Q: 25. Cut-and-paste transposition refers to: The mode of transposition of DNA transposons b. The mode…

A: DNA transposons are genetic tools that can be used to introduce a piece of foreign DNA into a…

Q: 12) The first discovered human virus is; a. Foot and mouth disease virus b. Tobacco mosaic virus. c.…

A: A virus is a submicroscopic entity neither classified as living nor dead. A virus may contain RNA or…

Q: Diagram the life cycle for a virus that uses an RNA-dependent DNA-polymerase.

A: Reverse transcriptase, also known as RNA-dependent DNA polymerase, is a DNA polymerase enzyme that…

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: "Briefly describe the two modes that enveloped viruses use for entry into their host cells. 2. How…

A: virus are defined as acellular infectious agents that replicate within living cells. There are three…

Q: 20. Viroids and prions: a. Compare viroids and prions in terms of structure and host.b. Describe how…

A: Viroids and prions are infectious agents.  These particles replicate in the host cell with the help…

Q: 82) The viral assembly a. The assembly of human adenovirus in the cytoplasm b. The assembly of…

A: The microorganisms are the microscopic living things that can be observed only under a microscope.…

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: 24. The blood agar reaction above is caused by A. nucleases B. a type of AB toxin C. streptolysin D.…

A: Blood agar may be a commonly utilized medium for refined microbes, especially those that cause…

Q: 5. For each of the following questions, select the correct virus or viruses A. Human…

A: A virus is genetic material stored within an organic particle that infects living cells and…

Q: 13) The end product in case of DNA polymerase during the Lumpy skin disease virus replication is :…

A: The lumpy skin disease is caused by the virus capripox and in this disease the cartels get infected.

Q: 5) The RNA polymerase (DDRP), one option is incorrect : a. Can work to produce the genomic RNA of…

A: B answer is incorrect.

Q: 1. "Describe how the T‐even bacteriophage attaches and enters the host cells. Which part of the…

A: T-even bacteriophage-tolerant mutants are Escherichia coli strains that can adsorb T-even phages but…

Q: 1. Which of the follovwing is NOT considered CPE caused by virus infection? A. Cytolysis B. Electron…

A: Viruses: These are non -cellular ,simple microbes having one or more molecule of DNA and RNA…

Q: list at least three potential targets for antiviral therapies/drugs. For each one, briefly justify…

A: Anti Viral Drugs attack one of the various steps of viral entrance or replication or exit. These can…

Q: We are confronted with a new RNA virus that uses x-proteins to attach to host cells and primarily…

A: RNA-dependent RNA polymerase (RdRp) inhibitors are a class of antiviral drugs that target the…

Q: 2.  Briefly describe the replication of Adenoviruses, Filoviruses, Picornaviruses, and Retroviruses…

A: To begin the infection cycle, all viruses require interaction between a cell surface molecule called…

Q: 9. Which of the following statements about influenza A virus is not correct? A. They have…

A: Influenza a virus can cause life threatening complications.

Q: 33. A strain of Salmonella that is defective in SPI-2/T3S genes will fail to A. be taken up by the…

A: *Salmonella SPI-2/T3S genes are in charge of the type III secretion system, which allows the…

Q: 1. List the sequences of events in lytic and lysogenic cycles of viral infections . 2. Which…

A: 1. The life cycle of the bacteriophages has been a good model for understanding how the viruses will…

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.