AP_chapter_18_closed_notes (1)

AP_chapter_18_closed_notes (1) - Chapter18Notes...

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    Chapter 18 Notes The Genetics of Viruses and  Bacteria
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    Concept 18.1 Researchers discovered viruses through  the understanding of tobacco mosaic  disease - stunts growth and causes discoloration  of leaves It was found that the pathogen could only  reproduce within the host it infected
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    Concept 18.1
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    Concept 18.1 A virus is a genome enclosed in a  protective coat - a virus can be a DNA virus or an RNA  virus depending on the kind of nucleic  acid - the protein shell that encloses the viral  genome is called the  ________
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    Concept 18.1 - the capsid may be rod shaped,  polyhedral, or more complex Some viruses have  _______________ membranes that cloak their capsids - derived from the membrane of a host  cell
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    Concept 18.1 The most complex capsids are found  among  _________________  (or  ________ ), viruses that infect bacteria
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    Concept 18.1
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    Concept 18.1 Viruses are  ____________________  parasites : they can only reproduce  within a host cell - viruses lack the enzymes for  metabolism and have no ribosomes for  making proteins Viruses are merely packages sets of  genes in transit between hosts
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    Concept 18.1 ______________ : the limited range of  host cells each type of virus can infect  and parasitize - viruses identify their host cells by a 
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AP_chapter_18_closed_notes (1) - Chapter18Notes...

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