The ebola virus is ______ times larger than the rhinovirus.   A. same size   B. 10   C. 100   D. 1,000   E. 10,000

Q: A Virus viral antigen List the Virus different cell D Activates | types (A to E) Activates Activates…

A: Immunity can be classified into innate immunity and acquired immunity. The inborn first-line defense…

Q: What will you find at the center of a clear plaque?

A: Plaques is opaque field of bacterial cultures which are infected by a virus or bacteriophage.

Q: Systemic anaphylaxis is caused by the presence of allergen in _____. a. the gastrointestinal tract…

A: Systemic anaphylaxis is a form of immediate hypersensitivity, arises when mast cells and possibly…

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: Infections with __________ virus cause the development ofmultinucleate giant cells.a. rabies b.…

A: Some viruses are able to induce fusion of cells and live within them, thereby avoiding the immune…

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: Creutzfeldt-Jacob disease is A. caused by a chronic latent virus. B. initiated by an oncogenic…

A: Creutzfeldt-Jakob disease (CJD) is a spongiform encephalopathy of humans, making option D the…

Q: How many times has Ebola caused an outbreak in the last 40 years?  A. Hundreds  B. Dozens  C.…

A: The objective of the question is to determine the number of times Ebola has caused an outbreak in…

Q: What percent of people are killed if they are infected by the Ebola virus?   A. 80%   B.…

A: The question is asking for the fatality rate of the Ebola virus, which is the percentage of people…

Q: Antigen diagnotic tests for Sars-CoV-2 detect the presence of _____ in your nose. a. Viral…

A: Introduction: Diagnostic tests that look for specific proteins or antigens on the surface of…

Q: 45. Apparently healthy people who may transmit a pathogen they harbor are called a. vectors b.…

A: A pathogen is a disease causing organism. It can spread or infect an individual via various ways or…

Q: Norovirus is spread by a. food d. blood products b. water e. c and d only c. aerosols f. a, b, and c

A: Norovirus is also known as the stomach bug or stomach flu. On the other hand, Norovirus infection is…

Q: When is Direct Coombs test done? A. Autoimmune haemolytic anaemia B. Drug induced red cells…

A: The Coombs test is one of the landmark tests in preventing life-threatening complications and has…

Q: The human cells specifically affected by HIV are: O A. Gonocytes O O O B. CD4+ T lymphocytes C.…

A: The virus known as HIV, or human immunodeficiency virus, targets the immune system and impairs the…

Q: vaccine

A: Vaccination is a method in which a Individual get immunity against the specific disease. It makes…

Q: The spread of covid 19 worldwide is associated with numerous myths a.identify some of those myths…

A: Viruses are organisms thought to occur at the borderline between the living and the non-living.…

Q: A prophage is a/an ___________stage in the cycle of ____________ .a. latent, bacterial virusesb.…

A: A virus is a submicroscopic infectious agent. Multiplication cycle of most animal viruses comprise…

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: 1- There is no vaccine for this cause of viral hepatitis: A. Hepatitis A B. Hepatitis B C. Hepatitis…

A: Viral hepatitis causes inflammation of liver and can lead to damage of liver and failure. (Please…

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: 74) the first discovered human virus was a. rabies virus b. foot and mouth disease virus c. yellow…

A: The yellow fever virus was the first human virus to be discovered. Carlos Finlay (1833–1915), a…

Q: The diseased caused by paramyxovirus is known as Select one: O a. mumps O b. None of the choices…

A: A paramyxovirus is a group of RNA viruses that causes a variety of infections such as Mumps,…

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: The current state of novel coronavirus (COVID-19) cases is reaching close to one million confirmed…

A: Coronaviruses are a group of large sized, enveloped viruses with characteristic widely spread…

Q: Read the article and then answers the following question.3. Why is it difficult to create a vaccine…

A: AIDS is a acquired immuno-deficiency syndrome caused by HIV virus and to make a vaccine against a…

Q: End point dilution is the viral dilution point where the amount of virus would be lethal to  a. only…

A: Before the plaque test, the end-point dilution assay was utilized to determine the viral titer.

Q: HIV can infect all of the following cells EXCEPT: C. Monocytes   Both A and D   D.…

A: HIV is human immunodeficiency virus. It causes AIDS which is a sexually transmitted disease. It is…

Q: Which statement is true about anthrax? O It is common in gastrointestinal infections O It is caused…

A: The world is made up of deadly pathogens and microorganisms. This pathogen causes harmful diseases.…

Q: Early in the COVID-19 coronavirus pandemic, despite countless news reports and official…

A: Answer  Option e) no more dangerous than a seasonal flu.

Q: 59. A complication of measles which might lead to personality change is: E. chorea. B. myelitis. C.…

A: Measles is a viral infection which causes respiratory discomfort with other clinical features like…

Q: Which vaccine utilizes whole Bordetella pertussis cells to initiate an immune response? a. DTaP d.…

A: Vaccines are either made up of whole cells of the pathogen or contain antigenic parts of the…

Q: Which of the following are phagocytes? 1. Neutrophils II. Macrophages III. Natural killer cells

A: Phagocytes are a type of white blood cell that plays an important role in the body's immune system.…

Q: Are these correct?…

A: Diseases that can be spread from one infected/ carrier organism to other healthy organisms are…

Q: he whooping cough vaaccine and the MMR vaccine are what type of vaccines? a. conjugated b. natural…

A: Answer An individual may be exposed to an antigen to induce the formation of antibodies, a type of…

Q: To stop the chain of infection, Nigerian health officials launched an army of contact tracers and…

A: Contact tracing is a by identifying the individual who are contact with the person with a…

Q: A(n)__________- infection is acquired through exposure in a hospitalsetting.a. subclinical b. focal…

A: An infection is the invasion of an organism’s body tissues by disease causing agents, their…

Q: Choose the correct word: The virus attacks ______________ cells in the brain.  Select one: a.…

A: Viruses are obligatory intracellular parasitic organisms. A virus must connect to a living cell,…

Q: 6. WHO declared the 2019-novel Coronavirus outbreak as a Public Health Emergency of International…

A: Option A is correct OnJanuary 30, 2020, the World Health Organization labelled the outbreak a Public…

Q: Which vaccine utilizes intact Bordetella pertussis cells to initiate animmune response?a. DTaP b. DT…

A: VACCINE:-Louis Pasteur culture bacteria causing Cholera and showed chickens injected with this…

Q: What other risk factors could have alerted physicians to thepossibility of Q fever in this case?a.…

A: Q fever is the bacterial infection caused by the bacterium Coxiella burnetii.

Q: Viruses_______. a. all have a round shape b. cannot have a long shape c. do not maintain any shape…

A: Viruses are very small and can not be seen with a light microscope, except for the poxvirus, the…

Q: Which hepatitis virus does the figure represent? Subdinical disease 100%. Recovery %66 65% Acute…

A: Hepatitis virus: Hepatitis virus is a non-enveloped Picornavirus that contains a single-stranded…

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.