BIOD171 Module 6 Exam (New)(2022-2023) BIOD171 Module 6 Exam, Exams of Biochemistry

Download BIOD171 Module 6 Exam (New)(2022-2023) BIOD171 Module 6 Exam and more Exams Biochemistry in PDF only on Docsity! Correct! False.Virusesareneithereukaryoticnorprokaryotic. False True Trueor False.Because thegenome iscontained withinan enclosedspace (muchlike thenucleus ofa cell), viruses are classified as eukaryotic. 2/2ptsQuestion1 A virus has (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 ofa eukaryotic cell. YourAnswer: TwobasiccomponentsofavirusthegenomicmaterialcomprosedofeitherDNAorRNAandacapsid,whichis the membrane or protective coat that contains the genetic material Describe the two basic components of a virus. 5/5ptsQuestion2 Thesurrounds the capsid of some viruses. YourAnswer: Capsid 0/3ptsQuestion3 BIOD 171 Module 6 Exam (New)(2022-2023)/ BIOD171 Module 6 Exam M6:Portage Learning BIOD 171 Module6Exam DueNoduedate Points100 Questions30 TimeLimit60Minutes AttemptHistor y Attempt Time Score LATEST Attempt 1 30 minutes 89.5 out of 100 Scoreforthisquiz:89.5outof100This attempt took 30 minutes. Submitted 2021 envelope Correct! False.Theoverwhelmingmajorityofanimalvirusesareenvelopedwhereasthemajorityofplantorbacteria- infectingvirusesarenot. False True TrueorFalse.Youwouldexpecttoseeaviralenvelopeonavirusinfectingabacterialcell. 2/2ptsQuestion4 Variolavirus(~200nm)>Orthomyxovirus(100-150nm)>Poliovirus(~30nm) Your Answer:Variolavirusisthelargest Orthomyxovirus is second last is poliovirus Rank the following viruses based on their size from largest to smallest:Orthomyxovirus Poliovirus Variolavirus 3/3ptsQuestion5 Correct Answe Falser True TrueorFalse:Highlyinfectiousvirusesundergogenomereplicationpriortoviralattachmentandentry. 0/2ptsQuestion6 Question7 5/5pts BIOD 171 Module 6 Exam (New)(2022-2023)/ BIOD171 Module 6 Exam YouAnswered Question11 5/5pts BIOD 171 Module 6 Exam (New)(2022-2023)/ BIOD171 Module 6 Exam Describethemaindifferencesbetweenlyticandtemperatephages.YourAnswer: Lyticphagesreplicatefromwithinthehostbacteriauntilrupturingwhiletemperatephagesexistinanon-replicative state but won't kill the host Lyticbacteriophagesreplicatewithinthehostbacteriauntilitruptures,whereastemporate(orlysogenic) phages primarily exist in a non-replicative state that does not kill the host cell. Lytic phages replicate all viral proteins needed for the assembly of new virus particleswhereas lysogenic phage genomes are integrated into the host genome but production of viralproteins is suppressed. Low.Asturbidityisafunctionofthenumberofintactbacterialcellspresentinthemedia,theamountof viruscontained withinthe abovetube must below. Asthe lyticcycle continues more and more bacterial cells will be destroyed, effectively clearing the media. YourAnswer: Lowbecauseofthenumberofintactbacterialcells+theamountofvirusinthetubeshouldbelow.Mediashould look/be clear as bacterial cells get destroyed. Based on the following image, would you expect the viral titer to be high or low? Why? 5/5ptsQuestion12 Which of the following can be spread via airborne particles: Measles 0/2ptsQuestion13 BIOD 171 Module 6 Exam (New)(2022-2023)/ BIOD171 Module 6 Exam YouAnswered Mumps Rubella A and B Correct Answer All of the above Correct! False True TrueorFalse. Apatient infectedwith rubellais consideredinfectiousone weekbefore andafter the appearance of the trademark rash. 2/2ptsQuestion14 Correct! Correct! Apatientmayexperienceacombinationofsymptomssuchasfever,flu-likesymptoms (influenza),cough, conjuctivitis, and a red blotchy skin rash. Influenza-like symptoms Rheumatic fever Conjunctivitis Impetigo ApatientdiagnosedwithGermanmeaslesmayadditionallyexperiencewhatdisease?Selectallthatapply. 2/2ptsQuestion15 Whichofthefollowingdiseasesdoesalinear,single-strandedRNAviruscause? Measles Mumps Rubella B and C Correct! All of the above Measles,mumpsandrubellaarealllinear,single-strandedRNAviruses. 2/2ptsQuestion16 BIOD 171 Module 6 Exam (New)(2022-2023)/ BIOD171 Module 6 Exam ThefirstpoliovaccinewasdevelopedbyDr.Salkin1954 Jonas Salk and his research team developed the polio vaccine at the University of Pittsburgh in 1955. Influenza A YourAnswer: FLU A or Influenza A Which subtype of Influenza is the most virulent? 3/3ptsQuestion25 Hemagglutinin (HA) proteins would be targets as they are directly involved in viral attachmentandentryintothehostcell.Neuraminidaseproteinsareinvolvedinthebuddingandreleaseof new viral particles and would thus not be the correct target. YourAnswer: The drug company would target HA or hemagglutinin proteins because they are directly involved in viralattachment and entry into host cells. Adrug company istrying to develop anew drug that willinhibit viral entry ofInfluenza. Would the drug company target hemagglutinin proteins or neuraminidase proteins? Why? 5/5ptsQuestion26 It is possible to receive a flu vaccine and yet (unfortunately) still get the flu in the same seasonif you are exposed to a viral strain that was not included in the vaccine. There are a largenumber of variants and the flu vaccine is unable to vaccinate against all subtypes. Medical researchers predict and then distribute flu vaccines based current trends and the availabledatarelativetothemostcommoncirculatingstrains.Unfortunately,thismodelisnotalways 100% accurate. YourAnswer: Becausetherearedifferentstrainsoftheflupresenteveryyearthatmutateandthatviralstrainmaynotbeincluded in the making of the vaccine that is taken by the person. Explainwhy the flushot given eachyear may notbe 100% effective atpreventing the flu? 5/5ptsQuestion27 Correct! False True Trueor False.The viralcapsid ofHIV iscone shapedand contains~2,000 copies ofthe viralprotein p24. 2/2ptsQuestion28 Correct! HIVgp120bindstoCD4. CD4 CCR5 CXCR4 CD3 The HIV surface glycoprotein gp120 binds what host cellular receptor? 2/2ptsQuestion29 Answer: As the name suggests, anti-retrovirals are intended to inhibit (anti) the life cycle ofretroviruses(retro).Byinhibitingsteps inthe HIV’slifecycle, anti-retroviralmedications effectively block the production of new virus particles and lower the viral load of the patient. YourAnswer: The general purpose of this medication is to inhibit the process of reverse-transcription -- that is to reducethe amount of HIV in the blood to very low levels and suppress the virus. An individual infected with HIV is placed on anti-retroviral medication. What is the general purpose of this medication? 5/5ptsQuestion30 QuizScore:89.5outof100