How is a provirus related to disease symptoms?         A-the provirus continually lyses cells, causing disease symptoms       B-the provirus periodically shifts to a lytic cycle, causing disease symptoms       C-the provirus can produce endospores during unfavorable times       D-the provirus secretes powerful toxins that make the host ill

Q: Some phages have a modified replication cycle in which infected host cells continue to grow and…

A: The viruses are considered to be non-living when they are out of the host as they lack cellular…

Q: What probably plays the most important role in determining the tissue and host specificity of…

A: Host specificity - A virus  has specific attachment proteins in the capsid or glycoproteins embedded…

Q: Describe some ways that animal viruses penetrate the host cell. What is uncoating?

A: Viruses are parasitic on other organisms. They are non-cellular organisms with RNA (ribonucleic…

Q: During the infective process, viruses may incorporatesegments of the host genome into their…

A: All viruses depend on cells for reproduction and metabolic processes. Viruses do not encode for all…

Q: Which is the usual order of a viral replication cycle when it is making new virions? O Host…

A: Viruses are the obligate parasite. They require host cell to complete their cycle from the…

Q: Explain the unique characteristics of viruses compared toliving cells.

A: Viruses are the microscopic organisms that has cannot be seen through naked eyes. They can be…

Q: Poxviruses are considered unique among the DNA viruses. Where do poxviruses, such as variola or…

A: Viruses are often considered as an infectious agent, that has either DNA or RNA as their genetic…

Q: Which of the following statements is TRUE concerning viral envelopes? O Only viruses with envelopes…

A: Introduction:-  Viruses are small obligate intracellular parasites, which contain either RNA or DNA…

Q: Why is it inaccurate to refer to the “growth” of viruses?

A: Viruses are infection agents that contain a core of genetic material that is either RNA or DNA. They…

Q: Why would it be harder to transmit some viruses out of doors?

A: Viruses are microscopic parasites, generally much smaller than bacteria. They lack the capacity to…

Q: An animal virus can become latent inside the host cell as a provirus, What happens in this process…

A: Latent period is also known as the latency period or the pre-infectious period. Latent period is the…

Q: The coronavirus is named for it’s crown or “corona” in Latin which is made of A.jewels…

A: Corona viruses are a group of related RNA viruses that cause diseases in mammals and birds.In humans…

Q: When transmitting a virus to the next host, they usually talk about horizontal and vertical…

A: Virus -  it is the connective link between live and alive  And it is inactive outside the cell

Q: Viruses are said to be “obligate intracellular parasites.” What does this mean with respect to how…

A: Viruses are infectious particles that requires host cell machinery to replicate. Viruses are…

Q: ompare and contrast the viruses, viroids and prions on the basis of: a. their nucleic acid and prot

A: A virus is a very small submicroscopic agent that is known for causing infections in its host…

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: Explain the difference between a virus and a retrovirus. Give an example of both.

A: A virus is a microscopic infectious agent that is capable of replicating inside the living cells of…

Q: Why are viruses considered “obligate intracellular parasites”?  What does it mean to be “obligate”?

A: Introduction :- Intracellular parasites are microscopic parasites that can grow and reproduce inside…

Q: Difference between adenovirus and retrovirus?

A: Any group of common DNA viruses that infects the adenoid tissues are referred to as the…

Q: What is the source of energy and raw materials for the synthesis of viruses in a host cell?

A: Viruses are defined as the infectious microorganisms formed of genetic material either RNA or DNA…

Q: Describe the two ways that a virus may infect a cell.

A: Viruses are minute particles that are made up of only their genetic material which may be DNA or RNA…

Q: Give one example of a segmented virus and describe how the structure of the virus influences its…

A: example of a segmented virus is the influenza virus which has 8 or 9 segments of RNA in its genome.…

Q: Generally, the DNA viruses have larger genomes than the RNA viruses. How would size be a factor in…

A: A virus, an unseen microorganism, infiltrates our body. It infiltrates our tissues and then…

Q: Put the following stages of a lytic replication cycle in order, from earliest to latest stages: I.…

A: Lytic cycle is one of the two cycle of viral reproduction which involves the lysis of the host cell.…

Q: infection mechanism

A: Viruses are submicroscopic infection agents that lack the capacity to live outside a host body. They…

Q: Draw a diagram of the one-step growth curve ofvirus replication, and briefly explain why the…

A: The bacteria and viruses are totally different from each other. They are different from each other…

Q: Which type of virus would not need a viral enzyme for transcription? retrovirus |ds RNA ss (+) sense…

A: Microorganisms are the ones which can be seen only under a microscope. Mostly they are unicellular…

Q: Make a graph plotting virus copy number and clinical symptoms vs time for each type of viral pattern…

A: Asymptomatic (HCV in some cases):Virus Copy Number: May show an initial increase but remains…

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: What enzyme is used by a retrovirus to make a DNA copy of its genome?

A: Viral genomes are very diverse, since they can be DNA or RNA, double- or single-stranded, circular…

Q: People with herpes simplex type 1 viruses often getmouth sores when they have a cold or similar…

A: A viral infection which is caused by the herpes simplex virus is known as Herpes simplex. It infects…

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: Discuss the characteristics of retroviruses. How do they act? How is their action different from…

A: Retrovirus are virus that has RNA as genetic material. When it infects the cell it first convert RNA…

Q: Why can’t new viruses be completely assembled in the nucleus of the host?

A: Viruses cannot entirely replicate in the nucleus since all the translationary machinery is in the…

Q: Retroviruses are dependent on reverse transcriptase, which does which of the following? Transcribes…

A: Answer- (d) creates a DNA copy of an RNA template In reverse transcription the RNA genome of the…

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.