Which among the following is caused by a non enveloped viruses? a. Chicken pox b. mumps c. Influenza d. polio

Q: A virologist develops a drug that specifically targets step 5 of the reproductive cycle of an…

A: The viral life cycle consists of six  stages such as -   (i) Attachment  (ii) Penetration  (iii)…

Q: Which characteristic of COVID-19 is NOT the same as in the 1918 flu pandemic? a) Blaming people from…

A: The spanish flu pandemic broken out by the end of first world war. It started in 1918 February and…

Q: Which virus is used in smallpox vaccination? a. variola c. cowpox b. vaccinia d. varicella

A: Introduction: The virus is defined as a microorganism that is smaller in size compared to a…

Q: The use of multiple drugs in HAART to treat AIDS has a. completely removed the virus from infected…

A: The disease that is caused by the human immunodeficiency virus (HIV) is known as the acquired immune…

Q: What is a virus pandemic? a) A sharp and rapid epidemic involving more than one country b) An…

A: The influence of virus and its infection depends on the geographical areas on which it spreads, food…

Q: Read the article then answer the following questions. 3. Why is it difficult to create a vaccine for…

A: Challenges that a virus poses for vaccine development Viruses have high mutation rate due to which…

Q: The virus known as H1N1 (swine flu)

A: Swine flu is a viral disease transmitted by H1N1 influenza A virus that transmits through…

Q: Choose the combination of answers that most accurately completes the statement. What features of the…

A: Some living organisms cannot be visible by the naked eye and only can be seen under the microscope.…

Q: Which of the following most directly causes the symptoms experienced by a person who is infected…

A: The virus enters your body and infects healthy cells. The invader spreads throughout your body by…

Q: An example of an emerging virus isa. phage λ.b. HIV that causes AIDS.c. a strain of influenza virus…

A: Virus is a microbe that consists of RNA (Ribo Nucleic Acid) as their genetic material. Most of the…

Q: What is true of the condition endocarditis?a. It occurs in the heart muscle.b. It is caused by…

A: The endocardium is the inner layer of the heart. It lines the heart and the valves. Endocarditis is…

Q: 12) The first discovered human virus is; a. Foot and mouth disease virus b. Tobacco mosaic virus. c.…

A: A virus is a submicroscopic entity neither classified as living nor dead. A virus may contain RNA or…

Q: Explain why each choice (a-d) is correct or incorrect. A flu vaccine is needed seasonally to be…

A: The flu is caused by the influenza virus that contaminates the nose, throat, and lungs. The word…

Q: The varicella-zoster virus that causes chickenpox is classified as a.a. herpes virus b. pox virus c.…

A: Varicella-zoster virus is known to cause two diseases, namely chickenpox (varicella) and shingles…

Q: While H5N2 is of great concern economically, it is not considered animminent threat to human health.…

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

Q: Comparing the number of infections, people catch cold so much more often than flu .Why haven’t we…

A: Vaccination is the artificial way of injecting the pathogen either dead or alive so as to prevent…

Q: 3. Why is it difficult to create a vaccine for AIDS? a. the virus is too well hidden in the body b.…

A: DISCLAIMER: Since you have asked multiple questions, we have solved the first question for you. If…

Q: a cytokint storm is an overproduction of immune cells and their activating compounds- cytokines can…

A: Cytokine storm or hypercytokinemia is the physiological response of an animal's innate immunity…

Q: Which of the following is a reason that scientists do not classify viruses as living things? A.…

A: Qusstion - Which of the following is a reason that scientists do not classify viruses as living…

Q: Which of the following statements about noroviruses is false?a) They are the most common cause of…

A: Viruses are infectious agents that are non-cellular and composed of genetic material covered by a…

Q: Choose the combination of answers that most accurately completes the statement.Which of the…

A: The antiviral drug is a chemical substance that is used to inhibit and prevent the growth and…

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: Virus causes?       A. Tetanus B. Common cold C. NOTA D.Malaria E. AOTA

A: virus are obligate parasite  that can replicate only when present  in the host.

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: The flu virus in flu vaccines is a dead virus. The term to describe the virus in this situation is…

A: Correct answer is B

Q: Cytomegaloviruses are a widespread and diverse group of:(a) Cytoviruses (b) Retroviruses(c)…

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

Q: How does soap kill coronavirus?  B. Why virus can not be washed off with water along?  C. Why soap…

A: Coronavirus can be prevented by practicing good hand hygiene. The best technique to eliminate…

Q: A virus with an envelope is most likely  A. an animal virus  B. better able to hide from the hosts…

A: when virus infect a cell , it penetrate the cell membrane and reaches the nucleus . after its life…

Q: In a recent influenza epidemic, physicians were utilizing a rapid diagnostic test to determine which…

A: Influenza It is a viral infection caused by influenza virus. This virus infects the respiratory…

Q: The mosquito is a

A: Aedes aegypti are the mosquitoes which which carries the dengue fever. Dengue has the symptoms like…

Q: Covid-19, an enveloped virus, cause a pandemic

A: COVID-19 is a strain of corona virus. In Covid-19 the name was taken from- Co- corona Vi- virus D-…

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: Polio and hepatitis A viruses are ___________ viruses.a. arbo b. enteric c. cold d. syncytial

A: The virus is microscopic and is even smaller than bacteria. they remain inactive or in the form of…

Q: The dreaded virus which, on reaching the central nervous system, produces spasms of the muscles of…

A: Virus It refers to a submicroscopic infectious pathogen that only multiplies inside an organism's…

Q: In Europe, for several centuries, measles has been a childhood infection that rarely kills. When…

A: Europeans brought several deadly diseases to New World (United States, Chile, South Africa, New…

Q: An enveloped virus has a __________ time hiding from the host human immune system and is _________…

A: The viruses are sub-cellular organisms. They are obligate parasites i.e. they use the host machinery…

Q: The envelope of enveloped -viruses : a. Determines the viral morphology b. Both choices are false c…

A: Envelope is the outermost layer of the viruses made up of phospholipids derived from the host cells…

Q: The epidemic that infected Europe, North Africa, and theMiddle East and killed tens of millions of…

A: Introduction An epidemic is a sudden increase in the number of instances of a disease beyond what…

Q: Which of the following viruses can be oncogenic in humans?a. papillomavirus b. Epstein-Barr virus…

A: Virus - Virus is a microscopic infectious agent which infects other living cells. Virus is made up…

Q: Which of the following is not a disease caused by a herpes virus? A. AIDS B. Genital warts C. Cold…

A: Herpes simplex virus (HSV) is the causative agent of herpes and it belongs to double-stranded DNA…

Q: To cause a human pandemic, the H5N1 avian flu virus wouldhave to(A) spread to primates such as…

A: Avian flu virus is the influenza virus that causes infections in humans. The acute respiratory…

Q: Which of these would be the index case for the Ebola epidemic?a. Nina Pham b. the baby in Guinea c.…

A: A virus is a microscopic infectious agent that could infect and live only within the living…

Q: In recent history we have been fairly successful in eradicating or substantially diminishing the…

A: Eradication refers to the global incidence of infection caused by a certain agent permanently…

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.