Course Hero Logo

A i b ii c ii or iii d iv chapter 19 viruses a you

Course Hero uses AI to attempt to automatically extract content from documents to surface to you and others so you can study better, e.g., in search results, to enrich docs, and more. This preview shows page 10 - 11 out of 11 pages.

A) IB) IIC) II or IIID) IV
Chapter 19: Viruses
AYou isolate an infectious substance capable of causing disease in plants, butyou do not know whether the infectious agent is a bacterium, virus, or prion.You have four methods at your disposal to analyze the substance anddetermine the nature of the infectious agent.I. Treat the substance with enzymes that destroy all nucleic acids, and thendetermine whether the substance is still infectious.II. Filter the substance to remove all elements smaller than what can beeasily seen under a light microscope.III. Culture the substance on nutritive medium, away from any plant cells.IV. Treat the sample with proteases that digest all proteins, and thendetermine whether the substance is still infectious.If you already know that the infectious agent was either a virus or a prion,which method(s) listed above would allow you to distinguish between thesetwo possibilities?
AWhich of the following processes within viral replication is the greatestsource of genetic variation in RNA virus populations?
CIn 2009, a flu pandemic was believed to have originated when viraltransmission occurred from pig to human, thereby earning the designation"swine flu." Although pigs are thought to have been the breeding ground forthe 2009 virus, sequences from bird, pig, and human viruses were all foundwithin this newly identified virus. What is the most likely explanation of whythis virus contained sequences from bird, pig, and human viruses?
\
End of preview. Want to read all 11 pages?

Upload your study docs or become a

Course Hero member to access this document

Term
Spring
Professor
ElizabethS.McLean
Tags

Newly uploaded documents

Show More

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture