Why do most viruses that infect bacteria have tails, whereas most viruses that infect animals and plants do not?

Q: How fast can a virus evolve?

A: Viral evolution is a subfield of evolutionary biology and virology that is specifically concerned…

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

A: The first macromolecule to act as genetic material in a living organism was RNA. During the course…

Q: Viruses that infect bacterial cells do not infect human cells, and viruses that infect human cells…

A: Virus is a non-living pathogenic agent which depends on its host for survival. It is  composed of…

Q: Which of the following human diseases is caused by a virus that requires reverse transcriptase to…

A: The virus is the connecting link between living and non living. Most of the animal viruses are RNA…

Q: What viruses possess a double-stranded RNA genome and whatdiseases do they cause?

A: Viruses are an acellular parasite that is not able to reproduce on their own. It is not considered…

Q: which type of conditions will be needed to grow virus cells

A: A virus is an infectious particle that multiplies by "commandeering" a host cell and using its…

Q: Do viruses have peptidoglycan?

A: Viruses are defined as infectious agents that can survive only by invading the living cells. They…

Q: Why are viruses considered non living?

A:

Q: Many viruses have the ability to resurrect dead cells. Why would investigating this feature of…

A: Viruses are intracellular obligate parasites in nature. They depend on the host cell for…

Q: What are the ways by which viruses overcome lack of 5’ cap in their mRNA? (cap snatching, presence…

A: A virus is a submicroscopic agent of infection that is able to replicate only when inside the living…

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: What are the similarities and differences among viral genomes?

A: Viruses are microscopic agents that can replicate only inside host cells. They can infect all types…

Q: A virus is isolated, and individual virions appear spherical. What type of virus is this? A.…

A: The essential construction or structure of a virus is comprised of a hereditary information molecule…

Q: Can RNA viruses synthesize DNA or is it just DNA viruses that can synthesize DNA.

A: RNA viruses can synthesize DNA. Viruses are non-living substance but when the enter into the host…

Q: Are viruses cellular beings?

A: Cellular organisms consist of cellular structures for example plants and animal whereas non-cellular…

Q: If viruses aren’t a form of life, what are they?

A: Viruses are the agents of some life treating diseases such as AIDS, polio, influenza etc. There are…

Q: Why must ( 2 ) strand but not ( 1 ) strand RNA viruses bring their own replicase into a cell?

A: A virus refers to an infectious particle that lacks the replication machinery but can replicate…

Q: Viruses cannot reproduce on their own, without the help of a living cell. Explain the basics of how…

A: A virus is an acellular nucleoprotein entity which is able to utilize the synthetic machinery of a…

Q: Why are viruses are not regarded as true living cells?

A: Virus is a small, microscopic infectious agent, made up off either DNA or RNA, surrounded by protein…

Q: Why can viruses not replicate independently of living cells?

A: Introduction  Central Dogma: it is the key mechanism by which DNA can be transcribed into mRNA by…

Q: Covid -19 virus is a RNA-virus that infects the throat cells. What does this mean? Why would the…

A: A virus with RNA as its genetic material. RNA can be double-stranded or single-stranded. Viruses are…

Q: Why can’t RNA viruses have a big genome?    Why do RNA viruses have a high mutation rate?

A: Normally small RNA virus genomes sizes varies (2 to 32 kb) has been seen to found very high rates of…

Q: The RNA genomes of some RNA viruses resemble the messenger RNA (mRNA) of their eukaryotic hosts.…

A: Answer- There are many viruses that have RNA as a genome called retro viruses. Their genome can be…

Q: A virus does not contain ribosomes. How does it manage to ensure the synthesis of its proteins?

A: Viruses are infectious agents that infect the living cell of the organism. They infect the cells,…

Q: How do the following types of viruses replicate (where does replication occur within the host cell,…

A: Dear student, as per the guidelines, I will answer the first three options. Please post the…

Q: What happens to a cell after a retrovirus injects its viral RNA into a cell?

A: Retroviruses are enveloped viruses which comes under the family Retroviridae.

Q: Do you think viruses are living organisms? Why or why not?

A: An organismic state characterized by capacity for metabolism, growth, reaction to stimuli, and…

Q: Why is it essential that negative-strand viruses carry an enzymein their virions?

A: Negative-strand viruses are RNA viruses that have a negative sense genome that is single stranded…

Q: Why must viruses repeat the same capsid protein subunits over and over again, rather than having…

A: The viral genome is enclosed by a protein coat known as the capsid, which will protect the genome…

Q: Can viruses reproduce by themselves?

A: A virus is an infectious microorganism made up of a nucleic acid segment (DNA or RNA) encased in a…

Q: How do viruses infect plant cells?

A: A virus is a small infectious agent that replicates inside living cells, causing damage or…

Q: In retroviruses, transcription of the provirus: A) converts viral RNA into viral DNA B) does not…

A: Retroviruses possess RNA as genetic material. When it enters host cells, it's RNA gets converted…

Q: Why are viruses not classified as living?

A: Virus are small infectious agents that reproduce in living cells and cause various diseases.

Q: Which one of the numbers below is the minimum number of capsomer proteins to make a spherical virus?

A: The correct option is - 60

Q: Lacking ribosomes, how can viruses be placed on the universaltree of life?

A: The viruses are the submicroscopic organisms that serve as the connecting link between the living…

Q: What causes influenza viruses to change through time?

A: Influenza is a "viral infection" that mainly affects the respiratory system of an individual. Mainly…

Q: Why do bacterial viruses often inject their DNA directly into the cell?

A: The bacterial viruses are virus that infects the animal, plant, and unicellular organisms.

Q: Why do some viruses replicate in some anatomical sites and not in others?  Name an example and the…

A: Viruses are acellular parasitic organisms that are thought to be known living outside the host cell.…

Q: Unlike  some positive  (+) strand  RNA viruses,  what must all negative (-)  strand RNA  viruses…

A: Virus is a non-living pathogenic agent which depends on its host for survival. It is  composed of…

Q: Are viruses considered alive? Can we really killed them?

A: Viruses are non cellular particles which are considered to be on the border of between living and…

Q: How does an animal virus replication cycle differ from that of a bacteriophage?

A: Replication cycle is also known as the reproduction cycle. Viruses that infects or targets the…

Q: Why are viruses not considered living organisms?

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

Q: How are prions different from viruses? How are they similar?

A: Viruses are infectious agents. They can only replicate inside the living cells. Viruses can infect…

Q: What is a prion? In what way does a prion differ fundamentally from viruses and viroids?

A: Infection is the invasion and reproduction of microorganisms such as bacteria, parasites, etc. It…

Q: How are viruses similar to cellular organisms? In what fundamental way do they differ?

A: Viruses are microscopic, the most primitive acellular infectious agents formed of nucleic acid and…

Q: Viruses with reverse transcriptase enzyme can make a DNA copy out of its RNA genome.  What…

A: Reverse transcriptase (RT) It is an enzyme through a single-stranded RNA transcribes into the DNA.…