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Micro Chapter 13

Viruses are _______ ______ ______ Obligate Intracellular parasites
Distinguishing Characteristics of Viruses -DNA or RNA -Protein Coat and Nucleic Acid -Multiply inside host cell using host mechanisms
Host Range Range of host it can infect
Broad Host Range Rabies
Small Host Range HIV
Host Range Depends On: -Presence of specific receptors on host cell membrane (Lock and key) -Host must provide what the virus needs
Virus Structure -Nucleic Acid -Protein Coat/Capsid -Envelope -Spikes
Viral Multiplication -Bacteriophages -Most Widely Studied -T phage
Lytic Cycle 1. Attachment 2. Penetration 3. Biosynthesis 4. Maturation/Assembly 5. Release/Lysis
Lysogenic Cycle 1. Temperate phages 2. Lytic or Lysogenic
Family name always ends in -viridae
Genus name always ends in -virus
What are viruses classified by? Nucleic Acid
Ag+Ab= Immune Complex
Created by: aleahgoodson
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