INTRODUCTION TO VIROLOGY

what did dimitri ivanovsky observe

viral agent was not removed by filters

what did martinus beijerinck observe

viral agent must be so small it passes through the filters

what term did martinus beijerinck coin

“Virus” as a “contagious living fluid”

what did Friedrich Loeffler & Paul Frosch observe

proved that viruses could infect animals

what did Peyton Rous observe

proved viruses could cause cancer

what did June Almeda discover

coronaviruses & developed electron microscope protocols

how many molecules of DNA or RNA enclosed in a coat of protein are in viruses

at least one molecule

can viruses have multiple or single layers or protein or lipids

multiple

can viruses reproduce independent of living cells

No

how do viruses make viral proteins

uses ribosomes from a live cell

what can viruses use to copy viral nucleic acids

polymerases from a live cell or their own polymerases

part of viruses that are shaped like hollow tubes with protein walls

helical capsids

polyhedral capsid with 20 identical triangular faces and rotational symmetry

icosahedral capsids

capsid thats not fully helical or icosahedral

complex capsids

viruses with multipart structures

tailed viruses