The nucleic acid of animal viruses enters the host cell througha. injection b. fusion c. endocytosis d. b and c

Q: The West Nile virus has what mode of transmission? a) Propagative b) Cyclo-propagative c)…

A: Answer- propagative

Q: Answer the following regarding the varicella-zoster virus: a) the biology of the virus ( type:…

A: Varicella-zoster virus is the virus responsible for causing chickenpox and herpes zoster. Primary…

Q: For a virus to be able to infect a cell, it must   A. Be able to specifically bind to receptors on…

A: Virus are the infective protineous coat found inside a living organism or in extreme conditiin like…

Q: The envelope of an animal virus is usually derived from the _____ of its host cell. a. cell wall c.…

A: Animals, plants, and even microorganisms like archaea and bacteria are infected by viruses. In many…

Q: A bacteriophage can infect ________. a. the lungs b. viruses c. prions d. bacteria

A: The cell which does not have membrane-bound organelles and nucleus is termed as prokaryotic cells.…

Q: The virus that causes COVID 19 has characteristics of both the common cold and the virus that causes…

A: COVID-19 is caused by infection with the severe acute respiratory syndrome coronavirus 2…

Q: The Shingles virus causes infections in adult patients years after they have experienced chicken pox…

A: Virus is a microscopic organism which contains a protective coat and the nucleic acid. It doesn’t…

Q: D) polyhedral The first step in viral infection is the recognition between the virus and the host…

A: The virus is a microscopic organism that infects other cells to survive. The virus can only…

Q: Capsid proteins are synthesized during which phase of viral replication? a. replication d.…

A: A virus refers to an infectious particle that possesses its genetic material enclosed inside a…

Q: Viruses may include of any of the following structures, EXCEPT: a. DNA   b. ribosomes…

A: Viruses are the small microorganisms that are parasites to humans, plants and other organisms. These…

Q: Which of the following is true?   A. Viruses cannot reproduce outside a host cell.   B. Prions…

A: Introduction : Viruses : Viruses Are Microscopic Infectious Organisms That Can Only Multiply Inside…

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: A prophage occurs during the reproduction cycle of Select one: O A. A lysogenic virus. O B. Alytic…

A: Viruses possess two types of life cycle: lytic cycle and lysogenic cycle. The lysogenic cycle of…

Q: What component is common for all viruses? a) Ribosome b) DNA c) RNA d) A protein coat e) A…

A: Virus An infective agent that typically consists of a nucleic acid molecule in a protein coat, is…

Q: Bacteriophage-viruses infect Select one: O a. Virus O b. Prokaryotes C. Bacteria

A: D-Herell give the term of Bacteriophage . Bacteriophage are the virus that infects the bacteria.

Q: Clear patches in cell cultures that indicate sites of virus infection are called a. plaques. b.…

A: Viruses are those microorganisms and they can live inside the host cells or other living things.…

Q: What are the types of in vitro virus cultivation systems (Choose all that applies)  A. Animal cell…

A: In vitro culture refers to the process of cultivating cells that are derived from the organism in a…

Q: Which receptors of the infl uenza virus are responsible for binding to the host cell? a.…

A: The influenza virus has  negative stranded RNA virus encapsulated by the M1 matrix protein. the…

Q: The viral ________ play(s) a role in attaching a virion to the host cell. a. core b. capsid c.…

A: A virus consisting a naked capsid goes into the cell by attaching to the attachment factor present…

Q: The virus transmits best in  A.enclosed spaces and sunny weather  b.encolsed spaces and cold/dry…

A: Viruses are infectious particles having a genetic material and are surrounded by a protein capsid.…

Q: Sometimes Ab interferes with the attachment site on virions so they can't attach to a host cell.…

A: Antibody responses are important for avoiding many viral infections and may also contribute to the…

Q: Is a nucleus cell or virus

A: Nucleus:  The nucleus is a membrane-bound organelle in cell biology that is present in eukaryotic…

Q: Which of the following statements correctly describes viruses? Select one: A. They can reproduce by…

A: Viruses are DNA or RNA containing and they are microscopic in nature. Usually they contain a…

Q: Which receptor of the influenza virus is most involved in binding tothe respiratory cells?a.…

A: The influenza virus is the causative agent of infection disease known as influenza also called flu…

Q: A virus is a tiny infectiousa. cell c. particleb. living thing d. nucleic acid

A: Viruses are microscopic organisms smaller than bacteria and they can be observed using an electron…

Q: Viruses are not considered living things becausea. they are not cells c. they lack metabolismb. they…

A: Viruses are neither living nor non-living. They are obligate parasites.

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 envelope of an animal virus is derived from the of its host cell.   Select one: A.  Cell wall…

A: Viruses are considered acellular but they are able to replicate inside the host cell. They do not…

Q: Which of these is true of prions?a. They are small RNA viruses.b. They replicate in the nucleus.c.…

A: Prions are the infectious substances that are discovered by Stanley B. Prusiner.

Q: New flu strains can arise by______ . a. meiosis c. viral reassortment b. mitosis d. binary fission

A: Introduction:- Influenza The features of the hemagglutinin (H or HA) and neuraminidase (N or NA)…

Q: The envelope of an animal virus is derived from the of itshost cell.a. cell wall b. membrane c.…

A: Viruses are small  infectious agents that can replicate only inside a living cell. They infect both…

Q: A cell with a Barr body is______ . a. a bacterium c. from a female mammal b. a sex cell d. infected…

A: A Barr body is defined as a stained X chromosome which is inactivated and found in mostly every…

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: A prophage occurs during the reproduction cycle of Select one: O A. A lysogenic virus. B. A lytic…

A: Virus is a microorganism that is neither prokaryotic or eukaryotic. This is because the virus…

Q: Viruses are not considered living because they ________. a. are not made of cells b. lack cell…

A: Virus are proteinaceous infectious agents that is capable of replication only inside a living cell.…

Q: After a virus has entered a cell and released its nucleic acid…   A. It begins feeding on cellular…

A: This is a multiple choice question.

Q: Which of the following is not used to culture viruses in the laboratory? A Guinea pigs B B cell…

A: Viral culture is a laboratory technique in which the ability of virus to infect the cell is tested…

Q: acteriophage is a (A) Fungus (B) Bacteria (C) Virus (D) Protozoa

A: Bacteriophages are composed of proteins that encapsulate a deoxyribonucleic acid or ribonucleic acid…

Q: A virus needs a ______ cell in order to reproduce. A. Large B. Host C. Weak D. Dead

A: Viruses are microorganisms who possess DNA or RNA as their genetic material. They gain entry to…

Q: Bacteriophages kill their host quickly by____ . a. binary fission c. a lysogenic pathway b. a lytic…

A: Bacteriophages are viruses that use bacterial cells as hosts.

Q: Enveloped viruses carry surface receptors calleda. buds b. spikes c. fibers d. sheaths

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

Q: Which of the following is characteristic of all viruses?   A. A protein capsid.   B. a viral…

A: Viruses are classified as non-cellular, tiny infectious agents. They can only replicate inside the…

Q: Please refer to the passage to help you answer this problem. Which of these characteristics is NOT…

A: Viruses- they are agent with small size and simple composition that can multiply only in living…

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: 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: A patient presents at the clinic with an acute viral infection. Assays that analyze the viral life…

A: Viruses are not living cells, viruses are packs of genetic materials enclosed within a protein coat.…

Q: If a viral cell penetrates ahealthy rabbit, the cell will divide into two in about one day. After a…

A: A virus is a genetically modified organic particle that infiltrates living cells and utilises the…

Virus

Viruses are infectious microscopic agents that can only reproduce in live cells of animals, plants, or microbes and are smaller than bacteria. Vertebrates, invertebrates, plants, protists, and fungi are among their many hosts. Viruses are unable to multiply on their own due to the lack of necessary cellular machinery, but they can guide the cell machinery of a host to make additional viruses by infection. The virus enters and attaches to a particular host cell, injects its genetic material, and reproduces by using the host’s genetic material. Viruses cause infection by taking entry into the host cell and using the host cell’s enzymes and raw materials to multiply.