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Characterization and Purification of Virus Particles: Historical and Modern Methods

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Characterization and Purification of Virus Particles: Historical and Modern Methods

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Questions and Answers

What is the purpose of the Berkefeld filter described in the text?

To retain bacteria and let virus particles pass through (correct)

To allow both virus particles and bacteria to pass through

To retain both virus particles and bacteria

To retain virus particles and let bacteria pass through

What are modern-day filter systems made of?

Glass with a variety of pore sizes

Metal with biologically active membrane

Disposable plastic with biologically inert membrane (correct)

Non-biodegradable plastic with no membrane

Which theory about the evolutionary origin of viruses is considered the predominant hypothesis?

Co-evolution theory (correct)

Viruses are degenerate cells

Viruses are originated from escaped genes

Viruses are relics of the 'RNA world'

What is the period populated only by RNA molecules called, as mentioned in the text?

'RNA world' Signup and view all the answers

What is the material used in the Berkefeld filter described in the text?

Diatomaceous earth Signup and view all the answers

What is the smallest pore size of the Berkefeld filter designed to retain?

Bacteria Signup and view all the answers

Characterization and Purification of Virus Particles: Historical and Modern Methods

Choose a study mode

Podcast

Questions and Answers

What is the purpose of the Berkefeld filter described in the text?

What are modern-day filter systems made of?

Which theory about the evolutionary origin of viruses is considered the predominant hypothesis?

What is the period populated only by RNA molecules called, as mentioned in the text?

What is the material used in the Berkefeld filter described in the text?

What is the smallest pore size of the Berkefeld filter designed to retain?

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