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Chp.19 Viruses, Chp. 27 Bacteria and Archaea - Coggle Diagram
Chp.19 Viruses
Viruses
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A virus is a very small infectious particle consisting of a nucleic acid enclosed in a protein coat and sometimes a membranous envelope
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Viral genomes
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Viruses have between 3 and 2,000 genes in their genome
Capsids and enevelopes
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A capsid can have a variety of structures; associated viruses may be reffered to as helical or icosahedral viruses
Viral replication
Viruses are obligate intracellular parasites, which means thay can replicate only within a host cell
Each virus has a host range, a limited number of host species that it can infect
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Replicative Cycles
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Once a viral genome has entered a cell, the cell begins to manufacture viral proteins
The virus makes use of host enzymes, ribosomes, tRNAs, amino acids, ATP, and other molecules
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