6 Questions
What is the purpose of the Berkefeld filter described in the text?
To retain bacteria and let virus particles pass through
What are modern-day filter systems made of?
Disposable plastic with biologically inert membrane
Which theory about the evolutionary origin of viruses is considered the predominant hypothesis?
Co-evolution theory
What is the period populated only by RNA molecules called, as mentioned in the text?
'RNA world'
What is the material used in the Berkefeld filter described in the text?
Diatomaceous earth
What is the smallest pore size of the Berkefeld filter designed to retain?
Bacteria
Explore the historical and modern methods used to characterize and purify virus particles. Learn about the Berkefeld filter, its invention, and its significance in isolating the first viruses. Discover modern-day filter systems employed for virus particle purification and characterization.
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