Q: Explain  how viruses are constructed. How do they work? Can we fine virus fossils? ( How do we…

A: INTRODUCTION Virus Viruses are the smallest unicellular organisms that are obligate intracellular.…

Q: What is an exception to the central dogma of molecular biology? a. Viruses sometimes transfer…

A: The central dogma of molecular biology is that,  DNA gets converted into a mRNA by the process of…

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: Are viruses living or dead? Discuss this question by applying your knowledge of viruses and their…

A: Introduction :- A virus is an infectious microorganism made up of a nucleic acid segment (DNA or…

Q: Which of the following is NOT true about viruses? O a. The vast majority cause severe disease of…

A: Virus  Viruses are non living particles when present out side the host cell and when enters/ infects…

Q: Based on devolution or the regressive hypothesis, it proposes to explain the origin of viruses by…

A: Viruses were first found after the innovation of a porcelain filter, called the Chamberland-Pasteur…

Q: When Wimmer and coworkers announced that they had synthesized the poliovirus, they created…

A: A pathogen or infectious agent is defined as a biological agent that will cause disease or illness…

Q: Do you see any potential problems with inserting pieces of a retroviral genome into humans? If so,…

A: Retroviral-mediated gene transfer is the main to gene therapy development. These have various…

Q: What scientific development was a crucial initial step to enhancing our knowledge of virus…

A: Viruses are the connecting link between the living and non-living. Most viruses vary in diameter…

Q: A virophage is best descirbed as:(a) A bacteriophage that requires a helper virus(b) An animal virus…

A: Viruses are obligate parasites. They are non cellular entities which have their RNA (ribonucleic…

Q: What are the types of in vitro virus cultivation systems (Choose all that applies)  A. Animal cell…

A: In vitro culture refers to the process of cultivating cells that are derived from the organism in a…

Q: Which of the following refer/s to viruses? A. They are disease-causing. B. They contain DNA or…

A: Introduction: Viruses are non-cellular microscopic particles that can replicate inside the living…

Q: What would happen to a virus that found its way to an environment filled only with cells that were…

A: Virus  Viruses are the sub microscopic infectious organisms.

Q: Is a Virus considered living or non-living? Justify your answer and Give one example of a virus

A: Introduction  Virus are not cells as they do not contain any cellular components. They consist only…

Q: Which of the following descriptions correctly identifies a main structural difference between…

A: Viruses are generally considered as borderline of life as they has non-living nature outside a…

Q: An emerging virus isa. a virus that has arisen recently and is more likely to cause infectionthan…

A: The correct option is D. (all of the above)

Q: Evaluate how each of the following results of scientific studies regarding mutations of the…

A: Virus is a microscopic infectious agent which needs a living system to replicate itself. Virus can…

Q: Which of the following can be used to grow and study viruses?   A. embryonated eggs   B. living…

A: Virus are infectious particles having nucleic acid [DNA or RNA] surrounded by a protein coat. They…

Q: Viruses are not considered living things becausea. they are not cells c. they lack metabolismb. they…

A: Viruses are neither living nor non-living. They are obligate parasites.

Q: An experimental drug therapy to treat patients with antibiotic-resistant bacteria involves…

A: phage therapy depends on the choice of phage/s. a cocktail of multiple phages that display a wider…

Q: Can viruses evolve?

A: Viruses are small, obligate, intracellular particles that lack the machinery to generate energy for…

Q: There is a big debate if viruses are alive or not. Either way, look at the list below and pick out…

A: The term virus was introduced by Edward Jenner in the year 1798, which means poison in the Greek…

Q: /hich of the following statements must be backed up with an in-text citation of a published sod A. I…

A: The universally excepted general properties of viruses include: They contain RNA or DNA as their…

Q: Why don’t scientists usually consider viruses living? A.They do not have DNA  B.They do not have…

A: The cell is the basic structural and functional unit of life. It carries out various functions in…

Q: Propose an explanation for why during the history of the discovery of viruses they were first called…

A: following is discussion regarding history of viruses and why they were initially labelled as…

Q: Please research one of the topics below, you may choose to focus on viruses in general or you may…

A: Viruses: Viruses are smaller infectious pathogens having genetic material (DNA or RNA) that need to…

Q: dsDNA viruses can have more genetic material than SSRNA viruses because: a. RNA catalyzes its own…

A: Deoxyribonucleic acid (DNA) is a hereditary molecule that passes genetic information from one…

Q: What is the basic classification of viruses. In other words, if you find a new virus, what is the…

A: Viruses are considered as non cellular; simple entities. They are considered as obligate…

Q: There have been recent outbreaks of dog flu in the US. Why doesn't this virus infect humans? A)…

A: Dog flu virus (canine influenza) has Equine and Avian origin. This means it has been derived from…

Q: According to the progressive, or escape, hypothesis, viruses (a) appeared before the three domains…

A: Virus is a relation between living and non living world and it is infectious. This is because ,…

Q: particular animal virus requires the use of DNA polymerase from its host, since it does not possess…

A: A virus is a pathogenic microorganism that is found everywhere on earth. Viruses cause infection in…

Q: Regarding enveloped viruses, which of the following is true of the viral envelope? A. It has the…

A: Enveloped viruses have a lipid membrane coating. Viruses with a lipid membrane are those that have a…

Q: Emerging viruses arise by(A) mutation of existing viruses.(B) the spread of existing viruses to new…

A: Viruses are the pathogenic agents that cause several diseases in humans as well as in animals and in…

Q: Which of the following is characteristic of all viruses?   A. A protein capsid.   B. a viral…

A: Viruses are classified as non-cellular, tiny infectious agents. They can only replicate inside the…

Q: Within a few weeks of treatment for herpes virus with the drug isonazide, a patient's herpes virus…

A: Herpes simplex virus is divided into two types as: herpes simplex virus-1 and herpes simplex…

Q: What is a negative strand RNA virus? O a. It is double stranded RNA. O b. It can be used directly to…

A: RNA  RNA is the genetic material of some bacteria and viruses. It may be either double or single…

Q: acteriophages and animal viruses do NOT differ significantly in which one of the following steps ?…

A: Bacteriophages are viruses that attack only bacteria whereas animal viruses are viruses that attach…

Q: What is the function of reverse transcriptase in retroviruses? a) It converts viral RNA into…

A: Introduction Retroviruses:- Retroviruses are single-stranded RNA viruses that used RNA as their…

Q: Larger viruses usually have a double-stranded genome, whereas small viruses typically have a…

A: Only a single nucleic acid molecule is found in all double-stranded DNA genomes, and only a few…

Q: Which of the following statement is true? A. Scientists believe the world is due for an epidemic of…

A: AN EPIDEMIC may be a disease that affects an outsized number of individuals within a community,…

Q: What is different between viruses and bacteria?   a. Viruses are typically smaller than…

A: A virus is a sub-microscopic infectious agent, while bacteria are microscopic, single-celled…

Q: Researchers have recently discovered giant viruses that are 1 μm in length, the same size as some…

A: All living organisms must perform the basic functions of life process that are necessary for…

Q: Which of the following statements is true? O a. To cause disease, a virus should be able to enter…

A: Viruses are thought to be a connecting link between living Kingdom and nonliving world. They don't…

Q: If you were to argue that viruses are living organisms, what features of viral structure and…

A: INTRODUCTION Viruses It is a small submicroscopic organism replicate only in a host. Virus always…

Q: What of the following statements is true? A Living organisms and viruses are multicellular. B Living…

A: Viruses are infectious agents ;having both living and non living characteristics .The virus particle…

Q: The life cycle of which of these viruses depends on reverse transcriptase? A)HPV, a DNA virus…

A: To find  The life cycle of which of these viruses depends on reverse transcriptase

Q: HIV is a retrovirus what does this mean? A. That is a DNA virus and it must make RNA before it can…

A: Answer is option  B.) That it is an RNA virus and must convert its genetic material to DNA once…

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.