Suppose that a time machine allows you to go back in time (and to travel to Australia), and you have collected rabbits and Myxoma from the years 1955 and 1980. Once you are back in the twenty-first century, you infect both sets of rabbits with both sets of Myxoma viruses. The most likely result will be (1) that the rabbits from 1955 injected with the 1955 virus will have a _______ survival rate than those same rabbits injected with the 1980 virus; and (2) that the rabbits from 1955 injected with the 1980 virus will have a _______ survival rate than rabbits from 1980 injected with the 1980 virus.   A. lower; lower   B. lower; higher    C. higher; lower   D. higher; higher    E. the survival rates will be the same in experiments (1) and (2)

Q: When doctors first discovered that the virus was Zika, they felt relieved because Zika outbreaks had…

A: The statement is not necessarily true. When doctors first discovered the Zika virus, it is unlikely…

Q: Zoonotic viruses cause the same symptoms, with the same severity, in animals and in humans. True…

A: The statement in question is asking whether zoonotic viruses, which are viruses that can be…

Q: The Nipah virus spread from animals to humans because humans tapped the sap from date palm trees and…

A: The objective of the question is to verify the statement about the transmission of the Nipah virus…

Q: O A contaminated catheter might be an example of an iatrogenic infection. O The size of an inoculum…

A: Iatrogenic infection, These are also known as Doctor induced infection. It is caused when a…

Q: 4. At which stage of viral infection did these mutations most likely occur?

A: The spread of a dangerous virus within the body is called a viral infection. Tissue damage and the…

Q: Groups 9, 10, and 11 all had H1N1 variants that caused a largenumber of infections at the same time…

A: The scientists hypothesized that newly evolved variant of strains could evade the human defense…

Q: Which of these statements about the virulence of rabbit myxoma virus is TRUE? A. Rabbit myxoma virus…

A: Myxoma virus It is a DNA pox virus.  It is a member of the lepropoxvirus group. It spreads through…

Q: Zoonotic viruses cause the same symptoms, with the same severity, in animals and in humans.   A.…

A: The question is asking whether zoonotic viruses, which are viruses that can be transmitted from…

Q: Although a virus is very virulent now, it will eventually evolve to become much less virulent.…

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

Q: avinger et

A: The rise of diseases like Ebola and COVID-19. It has shown that the world needs to be better…

Q: The emerge of the SARS-COV-2 and middle east respiratory syndrome (MERS)-COV illustrate the threat…

A: The coronavirus disease 19 (COVID-19) is a highly transmittable and pathogenic viral infection…

Q: Why do viruses more often evolve to greater transmission at the cost of virulence? From an…

A: consider an extraordinary environmental test looked by numerous microbes: suitable natural…

Q: Why do scientists worry more about new strains of viruses like influenza and coronviruses as…

A: Answer: Influenza and CoV are RNA viruses which results in having higher mutation rates -- they can…

Q: Since most of the diseases of modern times are caused by viruses, there are many antiviral drugs…

A: Antimicrobial drugs differ in their mode of action, including inhibition of cell wall, inhibition of…

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: Throughout history there are many different types of virus that have caused impacts both small and…

A: The impact of viruses and viral infections on human history is described by the social history of…

Q: Which of the following is a pyrimidine (one type of nitrogenous base) that is commonly found in all…

A: Evolutionary forces impact the dynamic processes of host-parasite interactions, promoting…

Q: .

A: Zika , Dengue and Chukunguya virus diseases are mosquito-borne diseases caused by dengue virus (…

Q: It appears that infection by Plasmodium is negative for Anopheles.  We also showed in class that the…

A: Plasmodium is a unicellular, parasitic protozoa which cause disease in humans. Plasmodium sp.…

Q: Why is conservation biology relevant to human coronavirus diseases? Because habitat destruction…

A: Conservation biology involves the conservation of natural fauna and flora from human advances or…

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: 1) Predict how the frequency of viruses with this deletion will change in the population over . Use…

A: Mutations arise as a natural by-product of infective agent replication.1 ribonucleic acid viruses…

Q: Which of the following is a NOT a true statement about Herpes Simplex Virus Type 1 (HSV-1)?

A: HSV-1 or Herpes Simplex Virus 1 is a common virus found in humans, causing certain medical…

Q: Which of the following is a commonality between coxsackievirus A16 infection and a varicella zoster…

A: Hand-foot-mouth disease is caused by coxsackievirus A16 virus while chicken pox is caused by…

Q: Using the design and key of the figure as a model, select all statements that represent changes that…

A: A coronavirus that has not previously been detected or reported, it evolves and infects humans.

Q: Match terms with descriptions based on the text above. You can use an answer more than once or not…

A: The terms prevalence and incidence are used to characterize the magnitude of a condition in a…

Q: Polio (poliomyelitis) is a serious disease that either kills or paralyzes a large number of people…

A: To test the hypothesis that the incidence in the treatment group is lower than that in the control…

Q: Imagine you are a virus flying around Brooklyn and you are looking to infect people sitting at the…

A: I am a free-flying virus finding my target outside of a restaurant in Brooklyn. First, let me…

Q: There are no known viruses capable of transforming normal cells to cancer cells in humans.   true…

A: Microorganisms are those small organisms that are invisible to the naked eye and can be seen only…

Q: good reason that SARS-CoV-2 is not as prone to mutation as Influenza A is that: its RNA is…

A: SARS-COV2 is the strain of corona virus that causes disease covid-19, the respiratory illness…

Viral Infections

Viruses are abundantly found, minute entities that have genetic material enclosed within a protein coat. The proteinaceous material enclosing the genetic material of the virus is called a capsid. The genetic material could be either DNA (deoxyribonucleic acid) or RNA (ribonucleic acid). A virus is too minute to be looked at with naked eyes and therefore visualized with the help of a microscope. They are acellular entities that require a host for processes, such as replication, transcription, translation and multiplication. Plants, animals, and bacteria act as host wherein the virus reproduce. Viruses cannot multiply outside the host's body and thus are considered nonliving outside the host body.