Biod 171 Exam 6 Questions With Complete Solutions Rated A+

True or False . Although viruses may contain their genome within an enclosed space ( much like the nucleus of a cell ) , it is considered neither eukaryotic nor prokaryotic . - Answer-True Describe the two basic components of a virus . - Answer-A has virus ( 1 ) genomic material comprised of either DNA or RNA and ( 2 ) a capsid , a membrane - like protective structure that contains the genetic material , similar to the nucleus of a eukaryotic cell . True or False . Because the genome is contained within an enclosed space ( much like the nucleus of a cell ) , viruses classified as eukaryotic . - Answer-False The envelope surrounds the ________ of some viruses . - Answer-capsid True or False . You would expect to see a viral envelope on a virus infecting a plant cell . - Answer-False The __________ surrounds the capsid of some viruses . - Answer-envelope Rank the following viruses based on their size from largest to smallest : Orthomyxovirus, Poliovirus, Variolavirus - Answer-Variolavirus, Orthomyxovirus, Poliovirus True or False : Highly infectious viruses undergo genome replication prior to viral attachment and entry . - Answer-False True or False : Viral replication occurs after it attaches and enters the host cell . - Answer-True Place the following viral life cycle steps in order beginning with viral attachment and provide a description of each step . Uncoating : Release : Replication : Attachment : Entry : New infection : - Answer-1. viral attachment : viral receptors bind to the host proteins on surface of cell 2. entry : the virus fuses with host membrane 3. uncoating : the viral capsid disassembles 4. replication : viral genome makes copies of itself 5. release : new virus particles are produced and leave the cell 6. new infection : newly produced viruses leave the host cell and infect new cellsA virus that infects bacteria is called a [ answer1 ] and contains a [ answer2 ] -sided polygon capsid . - Answer-1. Bacteriophage 2. 20 True or False . Structurally , bacteriophages are similar to viruses that infect ANIMALS . - Answer-False True or False . Structurally , bacteriophages are distinct from viruses that infect plant or animal cells . - Answer-True Describe the main differences between lytic and temperate phages . - Answer-Lytic bacteriophages replicate within the host bacteria cell until it reputures Temporate phages exist in a non - replicative state that does not kill host cell Which of the following can be spread via airborne particles : - Answer-All of the above True or False . A patient infected with rubella is considered infectious one week before and after the appearance of the trademark rash . - Answer-True A patient diagnosed with German measles may additionally experience what disease ? Select all that apply . - Answer-Conjunctivitis ; Influenza - like symptoms . Which of the following diseases does a linear , single - stranded RNA virus cause ? - Answer-All of the above What disease is best characterized by painful swelling of the paratoid ? - Answer-Mumps parotitis What disease displays as a secondary characteristic swelling of the testes / ovaries and pancreas ? - Answer-Mumps is caused by the swelling of the testes / ovaries and pancreas You go to visit a friend who has chickenpox. While visiting what are two things you will be sure to avoid so that you don't also become infected? - Answer-Chickenpox is transmitted through airborne droplets or having direct contact with the pustules of the infected individualTrue or False . The development of shingles is most often seen in an older adult population ( > 60 years old ) . - Answer-True True or False . Similar to chickenpox , the blisters that appear with shingles can cover the entire body . - Answer-False A person who has neither previously had chickenpox nor been administered the VZV vaccine is exposed to someone with an active VZV ( shingles ) outbreak and becomes infected . Explain why ( or why not ) the person will only develop shingles . - Answer-Infected person develope chickenpox . Unvaccinated and unexposed must develope chickenpox first . Shingles is the reaction of the dormant VZV virus . What linear , double - stranded , enveloped DNA virus is the first virus ( as of Oct. 26 , 1977 ) to be officially declared eradicated ? - Answer-smallpox What small ( ~ 30nm ) single - stranded , non - enveloped RNA virus targets the CNS ( central nervous system ) , causing potentially catastrophic damage to motor neurons ? - Answer-polio