
Ch.20.1- Viruses
Quiz by Kate Downey
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63 questions
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- Q1Which of the following could NOT be used to grow viruses in the laboratory?bacteriaplantchicken eggrock60s
- Q2Which of these is the best description of a virus?organisms made of RNA or DNA protected by proteina cell at the boundary between living and nonliving thingsa noncellular living organisma member of the kingdom Virusae60s
- Q3The innermost portion of a virus's structure is made up ofa protein capsid.either DNA or RNA.a membranous envelope.both DNA and RNA.60s
- Q4If a virus is termed “dormant”, this means itis easy to develop immunity against it.has not entered a lytic cycle.has not entered a lysogenic cycle.cannot be a retrovirus.60s
- Q5Some, but not all, viruses contain ______, located on their outer or inner surface.either DNA or RNAa protein capsidboth DNA and RNAa membranous envelope60s
- Q6In order to infect a cell, a virus mustactively burrow through the cell wall or cell membrane of the host cell to reach the cell's nucleus.have a special protein on its surface that can interact with a protein on the surface of the host cell.dissolve its own capsid in order to release its nucleic acid.produce a special extension of its cytoplasm when it comes into contact with the appropriate host cell.60s
- Q7The viral infection cycle that will cause the viral DNA to become integrated into the bacterial DNA is called the _______ cycle.lyticlysogeniclysollysosome60s
- Q8Which of the following is not true of viruses?they are obligate intracellular parasitesa specific virus will only infect a specific species (cell type)All of the choices characterize viruses.they require a host cell to replicate60s
- Q9Which of the following characterize prions?they cause Cruetzfeld-Jakob diseasethey can cause normal protein to change shapeAll of the choices are correctprions are simply misfolded protein molecules60s
- Q10Letters “a”, “b”, “e”, “f”, and “g” representthe lytic cyclethe lysogenic cycletransformation60s
- Q11Which part of the diagram is representing the assembly stage?bfde60s
- Q12The letter “d” represents aprophagecapsidbacteriophageviral envelop60s
- Q13Which of the following are characteristics of a virus?None of the above.ReproductionGrowth
Have a metabolism (aka use and obtain energy)
60s - Q14What nucleic acid is found in viruses?DNA or RNADNA & RNAonly RNAonly DNA60s
- Q15What is a capsid?the study of biological fluidsnucleic material encased in a protein coatgrowth of cells living in a controlled environmentthe requirement of a medium to reproduce60s