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non-cellular parasitic protein coated genetic elements that can infect all living things, including microgranisms
function of capsid
simulate antibodies production for future infectins, protects the viral nucleic acid, facilitates attachment of virus, helps introduce the virus to suitable host cell
usually double stranded, may be single stranded; circular or linear (replicated and assembled in nucleus).
usually single stranded, may be double stranded; positive and negative-sense RNA. (replicated and assembled in cytoplasm)
positive sense RNA
single stranded genomes that are ready for immediate translation. (protein synthesis)
negative sense RNA
single stranded genomes that must be converted into proper form - not ready for translation.
sequence of events in viral multiplication
adsorption, penetration, uncoating, synthesis, assembly and release
effects due to infection of a virus, cells can undergo gross shape/size changes and/or develop intracellular changes
(lysogenic replication cycle) Process of viral replication in which a bacteriophage enters a bacterial cell, inserts into the DNA of the host, and remains inactive. The phage is then replicated every time the host cell replicates its chromosome. Later, the phage may leave the chromosome.
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