virüs articles
What defining characteristic places viruses in a biological gray area?
What essential cellular component is critically absent in a virion, contributing to its dependence?
What vital energy molecule do viruses rely entirely on the host cell to generate?
What is the name for the protective protein shell surrounding the viral genetic material?
What is the core dependency phase during the infection sequence?
Which piece of host equipment is most significant for a virus needing to manufacture its own protein components?
What is the second distinct step in the sequence of viral infection?
According to evolutionary theories, which hypothesis suggests viruses developed alongside cellular life forms?
Why is the mandatory reliance on a host cell considered a successful, energy-saving strategy for viruses?
Where do DNA viruses generally migrate within the host cell to utilize host polymerases for replication?
What infectious agent did Dmitry Ivanovsky initially suspect was causing tobacco mosaic disease?
What specific type of filter did Ivanovsky use to separate the infectious agent from infected tobacco leaf extract?
What critical observation led Ivanovsky to question the nature of the pathogen or the filter itself?
What crucial step did Martinus Beijerinck perform that went beyond Ivanovsky's initial filtration experiments?
What Latin phrase did Martinus Beijerinck propose to describe the novel infectious agent?
Who is credited with coining the term 'virus' with its modern biological meaning?
How did Ivanovsky's primary contribution differ conceptually from Beijerinck's?
What structure was later discovered to be the chemical makeup of the tobacco mosaic agent?
What scientific tool, developed decades later, finally allowed visualization of the particles Beijerinck characterized only by their effects?