Virus Power Point

Viruses Chp 21 http://www.airmanager.com/new/images/virus460.jpg

Viruses ,[object Object],[object Object],[object Object],[object Object]

Key Concepts ,[object Object],[object Object],Cytoplasm, cell membrane, etc. Nucleic acid core, protein covering, some have envelope Structure Independently by cell division Only within host cell Reproduction DNA DNA or RNA Nucleic Acid Yes Yes Mutation Yes No Metabolism Yes No Homeostasis Yes No Growth Cell Virus Characteristic of Life

All viruses have 2 main parts: ,[object Object],[object Object]

Viral Shapes ,[object Object],[object Object],[object Object],[object Object]

Helical Virus http://www.mcb.uct.ac.za/tutorial/virovirion.jpg , http://textbookofbacteriology.net/themicrobialworld/hsv1struc.jpg , http://www.iayork.com/Images/2008/3-10-08/AdenovirusModel.jpg Enveloped Virus Adenovirus (Polyhedral)

http://2.bp.blogspot.com/_aPfF45kK_Bg/RyT7ZGjngFI/AAAAAAAAAM8/eR6I9tdzafM/s320/BacteriophageCartoon.jpg http://www.brooklyn.cuny.edu/bc/ahp/LAD/C4b/graphics/C4b_TMV.GIF http://www.apositivelife.com/images/graphs/bio.jpg

Virus leaving host cell enveloped by host cell membrane

Grouping Viruses ,[object Object],[object Object],[object Object],HIV Icosahedral, enveloped RNA Retroviruses Rabies Helical, enveloped RNA Rhabdoviruses Influenza A B C Helical, enveloped RNA Myxoviruses Polio, hepatitis, cancer Icosohedral, non-env RNA Picornaviruses Small pox, cow pox Complex brick, enveloped DNA Poxviruses Herpes simplex, chicken ox, mono, shingles Icosohedral, enveloped DNA Herpesviruses Resp. & intestinal infections Icosohedral, non-env DNA Adenoviruses Warts, cancer Icosohedral, non-env DNA Papovaviruses Example Shape and Structure Nucleic Acid Viral Group

Viral Multiplication Cycles ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

http://www.sciencegateway.org/resources/biologytext/cb/virus/phagerep.gif

http://www.accessexcellence.org/RC/VL/GG/images/examples_of_viral.gif

Disease Causing Viruses ,[object Object],[object Object],[object Object],[object Object]

Prions and Viroids ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Virus Power Point

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