Why must primary cell cultures be restarted every so often when preparing primary cell cultures to observe morphological changes caused by cells infected by a virus? Why are tumor cells preferred?

Q: Which of the three types of viruses shown in the figure would you expect to include a capsid(s)?…

A: virus are obligate parasites which becomes active ones they are inside the host cells . They have…

Q: Discuss the following statement: “Viruses exist in the twilight zone of life: outside cells they are…

A: The small microscopic organisms that cannot be seen with the naked eye are called microorganisms.…

Q: 1. Give the correct term for each of the follow : a. Viruses that contain an enzyme that copies are…

A: The immune system is a defense system of the body against pathogens such as viruses, bacteria which…

Q: Viruses occur in a. living state only b. both living and non-living states c. non-living state…

A: Virus is infectious microbe which contains a segment of nucleic acid (either DNA or RNA).  Viruses…

Q: Which of the following statements is not correct for viruses? (a) Viruses are obligate parasites.…

A: According to the question, Here we have to find out which of the following statement is not correct…

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: Adenoviruses that cause colds do not have a lipid envelope. Such naked viruses tend to remain…

A: The organisms that cannot be observed by unaided eyes are the microorganisms. These organisms may be…

Q: 2. Viruses a. Are viruses living organisms? Why? i. Give the properties of a virus that would…

A: The living world comprises of the Plants, the Animals and the Microorganisms. The microorganisms are…

Q: Which statements are accurate regarding properties of viruses? Select allthat apply. a. Viruses are…

A: The virus is microscopic and is even smaller than bacteria. They have their genetic material…

Q: Match the terms 1Genome surrounded by a protein coat 2Functional viral particle capable to infect a…

A: Match the terms :- Terms :- Answers

Q: 1. Characteristics of viruses (main difference from bacteria)

A: Microbes or microorganisms are the living forms that cannot be seen with naked eye. Specialized…

Q: Rhinovirus, the most common cause of colds, do not have a lipid envelope. Compared to enveloped…

A: Viral envelope is a loose membranous covering that occurs in some animal viruses, rarely plants and…

Q: In general, RNA viruses multiply in the cell __, and DNA viruses multiply in the cell __. a.…

A: Viruses are microscopic organisms that cannot be seen with naked eyes. The most unique nature of the…

Q: 2. Use the table below to compare Bacteriophages and Animal Viruses. Use the recorded lecture to…

A: As per the guidelines, we are supposed to answer only the first question please post the other…

Q: 1-Why do some viruses seem to go away and then return later, like a cold sore? a-host has been…

A: Since there are multiple questions in this particular question I will answer the first one for you.…

Q: 27. Class VI animal viruses include HIV. Based on the type of viral genome, how is this class…

A: Group 6 animal viruses are single-stranded so option A is wrong.

Q: hat was the role of filtration in the discovery of viruses. 2) Imagine a new respiratory virus that…

A: Microorganisms are an integral part of the ecosystem. These are present everywhere. Microorganisms…

Q: 1. A virus is made up of Protein coat and mitochondria protein coat and nucleic acid nucleic acid…

A: NOTE:- As you have mentioned two questions and not specified any particular question, so we are…

Q: 28. Class VI animal viruses include the retroviruses such as HIV. What type of enzyme does HIV…

A: The correct option is A) Reverse transcriptase. When the HIV has gained entry, the introduction of…

Q: Virology:viruses were initially believed to not serve any essential function for their host.Today we…

A: virus, it is infectious agent of small size with  simple composition which can multiply only in…

Q: We have many antimicrobial drugs to treat bacterial infections, but very few for viruses.  Why is it…

A: Viruses pose sizable demanding situations to the body's immune device as they lurk inside cells,…

Q: 5. For each of the following questions, select the correct virus or viruses A. Human…

A: A virus is genetic material stored within an organic particle that infects living cells and…

Q: Fill in the data table below. An example attached below is provided as a guide.  Microorganism:…

A: Introduction  The influenza virus family includes the A, B, C, and D strains. Nearly every winter in…

Q: Diagram 1 Diagram 2 Students are debating about differences between viruses and cells. Which…

A: Need to find the best option from the four options about cells and virus.

Q: Virus spikes are commonly associated with which of the following?   a. Non enveloped viruses b.…

A: Virus have spikes protein.

Q: Which of the following can be used to grow and study viruses?   A. embryonated eggs   B. living…

A: Virus are infectious particles having nucleic acid [DNA or RNA] surrounded by a protein coat. They…

Q: The following diagram shows the life cycle of the lytic virus, the symbol that indicates the stage…

A: Viruses have two types of life cycle lytic and lysogenic. In lysogenic type of lifecycle it insert…

Q: Which of the following characteristics is responsible for making HAV resistant to harsh…

A: Introduction :- Hepatitis is an disorder of liver . Hepato word is used for liver and itis stands…

Q: The Size of Viruses varies from:   a. 1-100 nm b. 25-300 nm c. 100-1000 nm d. None of the above

A: A virus is an infectious microbe consisting of a segment of nucleic acid (either DNA or RNA)…

Q: Select all the following statements that are TRUE regarding viruses: □ All viruses are potentially…

A: viruses- is a microscopic non cellular living organism. viruses are surrounded by protein coated…

Q: dsDNA viruses can have more genetic material than SSRNA viruses because: a. RNA catalyzes its own…

A: Deoxyribonucleic acid (DNA) is a hereditary molecule that passes genetic information from one…

Q: An 83 year old patient has been ill the past couple of days with an upper respiratory infection. Her…

A: Nursing counselling and advise involves certain intervention which helps process focusing on the…

Q: Regarding enveloped viruses, which of the following is true of the viral envelope? A. It has the…

A: Enveloped viruses have a lipid membrane coating. Viruses with a lipid membrane are those that have a…

Q: A patient is asked to participate in a trial using a bacteriophage to treat a Streptococcus…

A: Bacteriophage It refers to the virus that is responsible for causing infections in bacteria. The…

Q: Polyomavirus and Papillomavirus, which is NOT correct? are circular dsDNA are icosahedral capsid…

A: Viruses are the microscopic infectious agents. They are living inside a host body and non living…

Q: All HPV are non-enveloped double stranded DNA viruses. Their genomes are circular and approximately…

A: Introduction :- DNA acts as the genetic material in most of the cases but sometimes RNA can also be…

Q: Viral infections can be either lysogenic and lytic, explain the differences between the two viral…

A: Introduction :  Viruses are submicroscopic organisms and they cause infections in a wide range of…

Q: Why must primary cell cultures be restarted every so often when preparing primary cell cultures to…

A: Primary cell cultures are derived from tissue and not modified, they are more similar to the in vivo…

Q: How can viruses be beneficial? 2. Name two important features of retroviruses and give an example of…

A: Note- As per the bartleby rule we are supposed answer only first  three sub-part. Kindly repost the…

Q: Covid-19 pandemic has been the subject of incredible conspiracy theories. Based on your knowledge of…

A: Coronaviruses are a broad group of viruses that infect the human respiratory system and can be mild…

Q: 8. Why are viruses considered non-living? a. Viruses cannot replicate on their own. b. Viruses do…

A: Virus are responsible for one of the most dangerous diseases like Ebola, influenza, small pox and…

Q: Think about the cells that viruses infect. Pick out the correct statements below.   A. The host…

A: Introduction :- A virus is a small parasite that cannot reproduce by itself , it uses the host cell…

Q: Which of the specimens is a prokaryote cell?   Hint: viruses are not considered living cells   A.…

A: Prokaryotes are a microscopic single-celled organism that contains neither a distinct nucleus with a…

Q: antiviral drug

A: Viruses are tricky. They're small, mutate quickly, and make thousands and thousands of copies of…

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.