1. "List three properties of a virus that might be used as criteria for classification (taxonomy)

Q: As a general rule, viruses are not considered to be alive based on several reasons. One such reason…

A: Viruses are small, microscopic organisms that contain either RNA or DNA as their genetic material.…

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: 19. An investigaor is conducting a study of n outbreak of severe nausea, vomitting and diarrhea…

A: Outbreaks can be defined as a sudden rise in the number of disease cases which occurs when cases…

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: Comparing Viral Structures 1. Not all viruses are the same. Viruses can have different shapes,…

A: Viruses are microorganisms which are considered to be non living as they cannot live on their own

Q: Which of the following viruses have been used as vectors for gene delivery?

A: Gene delivery is a process of introducing the foreign genetic materials which are DNA and RNA into…

Q: There are three hypotheses about the origin of viruses. Briefly describe each hypothesis.

A: Viruses are organisms that have infectious properties. They cannot be replicated on their own, hence…

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: 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: 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: 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: 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: 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: Upon learning the distinguishing characteristics of living organisms, would you consider viruses to…

A: Viruses can be considered as living because they contain nucleic acids, such as DNA or RNA,…

Q: 3. (a). Illustrate and describe the lytic and lysogenic cycles for the production of viruses. (b).…

A: Introduction :  A prokaryotic organism with only one cell is a bacteria. They lack a nucleus and…

Q: Describe the key contributors to and consequences of viral genome evolution, and state why RNA…

A: Genome is a set of information of genetic material for any organism.  Usually the genome is stored…

Q: Give a brief account of viruses with respect to their structure and nature ofgenetic material. Also…

A: Genetic material of an organism refers to the DNA molecule present in the nucleus of its cell. DNA…

Q: a. What dictates the host range of animal viruses?b. How is the influenza virus different in its…

A: Viruses are the living organisms characterized by the ability to behave like a living organism…

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: all of the following that are true regarding viruses? Oncogenic viruses stimulate uncontrolled host…

A: The virus is a pathogenic microorganism with nucleic acid as DNA/RNA. The nucleic acid is covered by…

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: 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: 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: If you must create a drug or prescribe a healthy food or drink to target the Covid virus, what part…

A: Viruses are simple, noncellular entities consisting of one or more molecules of either DNA or RNA…

Q: 4. Write a discussion on the "Structure of Virus". (You may read chapter 17 and any other peer-…

A: Viruses are tiny obligatory intracellular parasites with a virus-coded protein sheath enveloping an…

Q: Distinguish between a capsid and a capsomere. What is acommon symmetry for spherical viruses?

A: Viruses are a nucleoprotein entity which is able to utilize the synthetic machinery of a living cell…

Q: Describe the 5 steps of viral infection process. During the synthesis step, what 2 major cellular…

A: The major steps in viral infection process include attachment where the virus attaches to the…

Q: Which of the following components of a virus is NOT encoded by its own genome? O capsid of HIV O…

A: HIV (Human Immunodeficiency Virus) is a retrovirus that primarily infects human immune cells,…

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: Give an example of each of the following types of viruses a. Double stranded DNA b. Single stranded…

A: Viruses are intracellular, obligately parasitic, non-cellular, sub-microscopic organisms that…

Q: Q2. (a) Define the basic structure and function of Virus. Explain the experiment which led discovery…

A: The Simplest Virions consist  of two basic components i.e. Nucleic Acid ( single or doublr dtranded…

Q: Many virologists note that viruses which have a genome made up of RNA will tend to evolve faster…

A: DNA, or deoxyribonucleic acid, is the hereditary material in humans and almost all other organisms.…

Q: Poxviruses are unusual among DNA viruses because their replication cycles takes place entirely in…

A: Introduction The Family Parvoviridae Includes Parvoviruses, Which Are A Group Of Animal Viruses.…

Q: Charged spherical viruses have polymer chains attached to their surfaces, e.g. they are ‘PEGelated’…

A: Polymers that present at surfaces can provide steric entropic forces as a result of the…

Q: Which of the following statements regarding viral genomes is FALSE?   Question options:   viral…

A: Viral genomes :  ▪︎Viral genome and host cellular factors play an important role in the completion…

Q: Looking at the phylogeny below which shows the relationships between the original SARS-CoV virus and…

A: It's believed that coronaviruses, including SARS-CoV and SARS-CoV-2, have likely existed in animal…

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.