The SARS-COV-2 is a virus, which does not even have reproductive organs but it spread so fast among humans and in less than a year created a pandemic worldwide. Why?

Q: In a single point mutation, when the RNA changes but not the amino acid, it is called Why do…

A: The mutation is the abrupt change in the DNA nucleotides which usually change the gene expression.…

Q: What happens when a person who is infected with a herpes virus experiences a cold sore or genital…

A: Introduction  Herpesviridae is a large group of DNA virus which has around 135 types found in…

Q: Which statement best explains why the virus that causes dog flu does not infect humans? In other…

A: A virus is an 'infectious agent' that consists of genetic material (either RNA or DNA) enclosed in a…

Q: You compared epidemiological data from two different outbreaks. You found that the outbreak caused…

A: Viruses are very small particles that cannot be seen by the naked eyes but they have a very high…

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: Why does the Ebola virus generate such severe symptoms in a human host? (Hint: What is the…

A: virus were some of the first replicating systems . they have evolved many times and have become more…

Q: In 1918, an influenza pandemic that originated with avian flu killed 50 million people. Researchers…

A: An influenza pandemic is a worldwide outbreak caused by a new influenza virus with little to no…

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: Snow leopards are solitary animals. An individual leopard will maintain a huge territory. They meet…

A: The small, minute and microscopic organisms are called microorganisms. The main groups of…

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: True or false, some mutations that occur in strains of covid19 are adaptive and help the virus evade…

A: Introduction DNA:- deoxyribonucleic acid, It is the hereditary material in humans and almost all…

Q: The novel Coronavirus (COVID-19) is a virus for which no known vaccine is available yet. A person…

A: The CoronaVirus Disease (or COVID-19)was aglobal pandemic that came as a surprise to the whole…

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: The passage of pathogen from mother to fetus during pregnancy is an example of Transplacental portal…

A: Infectious diseases are illnesses caused by pathogenic harmful microorganisms, such as bacteria,…

Q: Which of the following conclusions could be drawn from the similarities and relatedness that exist…

A: Introduction:  Simian immunodeficiency virus (SIV) is a lentivirus that affects a number of nonhuman…

Q: Explain why many countries worldwide ( including Philippines) is willing to spend money just to get…

A: After a year into the COVID-19 pandemic, coronavirus disease, the world effort to develop and…

Q: Suppose that a time machine allows you to go back in time (and to travel to Australia), and you have…

A: Rabbits injected with the virus of same year will have higher survival rate because at that time…

Q: During the summer and fall of 2002, the West Nile Virus advanced north into Canada. This Virus…

A: West Nile Virus or WNV is a virus that causes West Nile Fever. It is an RNA virus whose genome is…

Q: The City Department of Health has found out that a very infectious strain of influenza (transmission…

A: Contact rate means number of contacts per unit time. Here , Transmission probability (p)= 0.3…

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: - If the virus escapes the containment facilities (even though it has not done so yet), it might…

A: Introduction:- An influenza pandemic is a worldwide outbreak caused by a new influenza virus with…

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: From: "Why our flu vaccines can't keep up" What is the most likely explanation for why the smallpox…

A: The mutation in influenza virus occurs faster than smallpox or polio virus. So option 3 is correct.

Q: Why can’t drugs used to treat influenza, like neuraminidase inhibitors, be used to treat a wider…

A: Influenza is a viral infection, also known as flu. It is caused by influenza virus.   Symptoms :…

Q: The diseases SARS, MERS, and COVID-19 are all caused by what family of viruses? Coronaviruses…

A: Viruses are obligate intracellular parasites that depend on the host for their survival. For their…

Q: When SARS-CoV-2 replicates, mistakes can be made in some copies of its genome, giving rise to…

A: The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is a new coronavirus associated…

Q: According to studies of SARS- CoV-2, the typical genetic mutation rate for this virus is 1 mutation…

A: Viruses have the ability to mutate over time. As they undergo replication minute errors are…

Q: Why do scientists consider SARS-CoV-2 to be an emerging virus?     SARS-CoV-2 infected humans for…

A: COVID-19 is the pandemic which is caused by the corona virus, it affects different individual…

Q: The 2020 flu shot is an _____  virus vaccine made against three _____ of influenza predicted to…

A: The 2020 flu shot is an attenuated vaccine. Attenuated vaccines contain a live weakened virus that…

Q: When SARS-CoV-2 replicates in cells, mutations can occur in the virus’s genome. When mutations have…

A: Mutation  The replacement of one nucleotide base with other nucleotide base is known as mutation.

Q: Rabies is a disease that can be transmitted between humans and animals. describe at least two human…

A: Rabies can be described as the viral diseases of dogs and other animals that spread to humans…

Q: Emerging viruses that suddenly become apparent in causing widespread disease are actually caused by…

A: A disease is a state of unhealthiness of the physical body, mind and social interaction. A disease…

Q: The

A: Viruses are intracellular obligate parasites, having DNA or RNA as a genetic material enclosed by…

Q: Scientists often see that organisms with similar genetics are susceptible to being infected by…

A: Ans: The genetic study helps scientist to check the susceptibility of an organisms to particular…

Q: Which of the following is the most probable fate of a newly emerging virus that causes high…

A: The virus emerged as a new strain through mutation of the existing viruses. It can skip from one…

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

A: Exposure to the herpes simplex virus  (HSV) causes herpes infection. It produces mouth sores and…

Q: In a [1] infection, the viral DNA is inserted into the host cells DNA. it remains there and is…

A: Viruses are particles that are made up of nucleic acid, protein, and in some cases, lipids. The…

Q: What is the importance of taking medical supplements like vitamin c, zinc, and rosehip oil in…

A: A healthy lifestyle is needed to combat infectious diseases, metabolic syndrome, and its related…

Q: "Using the strain of Wolbachia from CalTech, Scott O'Neill's lab..." Found great success at…

A: Found great success at preventinf transmission of the dengue virus between mosquitoes. This…

Q: The trade-off hypothesis describes the idea that both a “too much” virus and a “not enough” virus…

A: There is a hypothesis that "too much" virus and a "not enough" virus will not spread very much. But…

Q: he current pandemic COVID-19 (coronavirus disease 2019) is caused by 2019-nCoV (2019 novel…

A: Highly virulent means that, a pathogen or microbe that is marked by a severe, rapid, and destructive…

Q: Which one (s) of the following viruses is/are transmitted by mosquitoes? 1. La Crosse virus. 2.…

A: Crimean Cango Hemorrhagic fever virus transmitted through contact with infected ticks or animal…

Q: Each year, hundreds of millions of people get sick from diseases like Zika, Dengue Fever, and Yellow…

A: Mosquitoes are vectors, which mean they act as agents to carry bacteria, parasites, and viruses. The…

Q: The SARS-COV-2 is a virus, which does not even have reproductive organs but it spread so fast among…

A: Introduction :- Viruses are the Pathogenic agents which causes different types diseases . On the…

Q: Many scientists start believing that plant viruses may be responsible for human disorders. Yes or…

A: Most plant viruses are rod-shaped, with protein discs forming a tube surrounding the viral genome;…

Q: Penicillin is an antibiotic that acts by inhibiting the formation of peptidoglycan cross-links in a…

A: Bacteria is considered as prokaryote while there is no proper classification of virus till date. It…

Q: a virus goes through with path would it take and how would it enter to the brain? I am asking if a…

A: Virus enters the living cells through different routes. First and foremost thing for the viral entry…

Q: Why are viruses NOT considered living organisms? They are not composed of cells They cannot…

A: Introduction :- A length of nucleic acid (either DNA or RNA), encased in a protein coat, makes up a…

Q: Suppose that a time machine allows you to go back in time (and to travel to Australia), and you have…

A: The body of a living organism is always in a constant fight against external forces and pathogens…

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.