Ebook Rapid review microbiology and immunology (3th edition): Part 2

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Ebook Rapid review microbiology and immunology (3th edition): Part 2

Section IVirologyChapter18Viral Structure, Classification, and ReplicationI.Structure and Classification of VirusesThe foknung characteristics: gencan

Ebook Rapid review microbiology and immunology (3th edition): Part 2ne type, - .eljped

y ONA viruses with Single stranded genomeAJI (-) RNA viruses are enveloped and must carry their RNA-dependent RNA polymerase as part of die nudeocapsi Ebook Rapid review microbiology and immunology (3th edition): Part 2

d.DMA (except pox) and (♦} RNA (not retro) do not need to cany a polymerase into the target celt, and their genomes ate sufficient to infect a cellReo

Ebook Rapid review microbiology and immunology (3th edition): Part 2

vrruses. douHe-doublr double-capsid/ double stranded, segmented genomeBe able to recognize viruses with charaaenstic shapes (Fig. »8-2).An icosahedron

Section IVirologyChapter18Viral Structure, Classification, and ReplicationI.Structure and Classification of VirusesThe foknung characteristics: gencan

Ebook Rapid review microbiology and immunology (3th edition): Part 2ackaged within a protein coat, the capsid, which mayor may not he surrounded by a membrane envelope.2Essential enzymes or other proteins arc carried w

ithin some viruses.3The major virus families can lie classified based on their genome struc ture, size, and whether they arc enveloped or not envelope Ebook Rapid review microbiology and immunology (3th edition): Part 2

d.B.(Ù.-I1OIIIC structure1I )NA genome (Fig. 18-1 A)•Single-stranded (linear) DNA: parvoviruses•Double-stranded DNAa.Linear genome: adenoviruses, herp

Ebook Rapid review microbiology and immunology (3th edition): Part 2

esviruses, and poxvirusesb.Circular genome: polyomaviruses and hepadnaviruscs2RNA genome (Fig. 18-1B)•Positive-sense (+> RNAa.Same sequence as messeng

Section IVirologyChapter18Viral Structure, Classification, and ReplicationI.Structure and Classification of VirusesThe foknung characteristics: gencan

Ebook Rapid review microbiology and immunology (3th edition): Part 2, which then acts as a template for production of mRNA.•Negative-sense (-) RNAa.Sequence complementary to mRNAb.Must be copied into (+) strand to gene

rate mRNAs for protein synthesis•Double-stranded (+/-) RNA: copying of (-) strand generates mRNA for protein synthesis3Segmented genome•Found in the r Ebook Rapid review microbiology and immunology (3th edition): Part 2

eoviruscs, a (+/-) RNA genome, and in three families of (-) RNA viruses (orthomyxoviruses, arenaviruses, and bunyaviruscs)•Consists of several pieces,

Ebook Rapid review microbiology and immunology (3th edition): Part 2

or segments, each of which encodes at least one polypeptide•May undergo reassottment among genomic segments, yielding new virus strains, particularly

Section IVirologyChapter18Viral Structure, Classification, and ReplicationI.Structure and Classification of VirusesThe foknung characteristics: gencan

Ebook Rapid review microbiology and immunology (3th edition): Part 2virion.

Section IVirologyChapter18Viral Structure, Classification, and ReplicationI.Structure and Classification of VirusesThe foknung characteristics: gencan