What did experiments using porcelain filters prove? Select all answers that apply.Porcelain filters retain both bacteria and virusesViruses are actually solutions of genetic material, which is why they were named "viruses" after theLatin for liquid poisonViruses are smaller in size than bacteriaViruses replicate in broth

Porcelain filters were engineered in the late 19th century by scientists as bacteriological filters…

Answered: What did experiments using porcelain…

Biology Today and Tomorrow without Physiology (MindTap Course List)

5th Edition

ISBN:9781305117396

Author:Cecie Starr, Christine Evers, Lisa Starr

Publisher:Cecie Starr, Christine Evers, Lisa Starr

Chapter13: Early Life Forms And The Viruses

Section: Chapter Questions

Problem 3CT

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Figure 3 is an electron micrograph of polio virus, magnified 85,000 times. Measure the diameter of virus particle X and calculate its actual diameter. Show your complete solution. Could this virus be resolved under the light microscope? Support your answer with values of resolution.
viruses:1. Why must primary cell cultures be restarted every so often when preparing primary cell cultures to observe morphological changes caused by cells infected by a virus? Why are tumor cells preferred? 2. Why are non-enveloped viruses generally more resistant to disinfectants than are enveloped viruses? 3. A public health physician isolated large number of phages from rivers used as a source of drinking water in western Africa. They physician is very concerned that humans might become ill from drinking this water, although she knows that the phages specifically attack bacteria. Why is she concerned?
please tell me how bacteriophage and animal viruses multiply. please add both lytic and lysogenic cycles for bacteriophage, all steps, and the outcomes of both. For animal viruses, please include all steps and briefly explain the differences between their nucleic acids. i am having a hard trouble understanding this information if you could please explain in way where a child would understand it that would be amazing
The illustration best describes: A dormant bacterial infection A dormant viral infection An active bacterial infection An active viral infection
Can i get a help answering this question: The case study tells you that the HIV virus exits the cell by budding, but how can you tell that just based on the structure of the HIV virus? (see attached for the case study)
Polyomavirus and Papillomavirus, which is NOT correct? are circular dsDNA are icosahedral capsid are non-enveloped contain DNA and RNA polymerase their fusion with the host cell doesn’t involve in uncoating genome replicate in cytoplasm None of the above Both D and F D, E, and F
You have a petri dish containing 1 x 106 adherent cells. You have a vial ofpoliovirus with a concentration of 2.8 x 107 pfu/ml. How much volume of the stockvirus should you add for an MOI of 1.0? MOI means: multiplicity of infection
Notice the white line indicating a reference for 100 nm. Which 3 viruses have a diameter (width) roughly equal to 100 nm?
Which of the following is true about capsid? There could be more than one answer. Present in both enveloped and naked virus. Composed of individual protein molecules called capsomeresiral nucleic acid. Houses the viral nucleic acid. Capable of self-assembly. Not present in coronavirus
All of the following statements correctly describes the properties of Influenza A virus EXCEPT A-Viral transcription occurs in the nucleus B-Mature virion are released by budding C-Single stranded positive sense RNA virus D-Attaches to cell-surface sialic acid
Which of the following statements regarding viral classification is FALSE? Question options: all known viruses have been classified into genera and families all viruses are not descended from a common viral ancestor some viral families have been classified into orders the presence or absence of an envelope is one criterion upon which viral classification is based viral classification is based, in part, on the presence or absence of a capsid all these statements are TRUE
Viruses display all the characteristics of living organism but many scientists do not consider viruses as living organisms because of their size. True False

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