What did experiments using porcelain filters prove? Select all answers that apply. Porcelain filters retain both bacteria and viruses Viruses are actually solutions of genetic material, which is why they were named “viruses” after the Latin for liquid poison Viruses are smaller in size than bacteria Viruses replicate in broth

What did experiments using porcelain filters prove? Select all answers that apply. Porcelain filters retain both bacteria and viruses Viruses are actually solutions of genetic material, which is why they were named “viruses” after the Latin for liquid poison Viruses are smaller in size than bacteria Viruses replicate in broth

Concepts of Biology

1st Edition

ISBN:9781938168116

Author:Samantha Fowler, Rebecca Roush, James Wise

Publisher:Samantha Fowler, Rebecca Roush, James Wise

Chapter17: The Immune System And Disease

Section: Chapter Questions

Problem 4RQ: Which statement is true? a. A virion contains DNA and RNA. b. Viruses are acellular. c. Viruses...

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Which statement is true? a. A virion contains DNA and RNA. b. Viruses are acellular. c. Viruses replicate outside of the cell. d. Most viruses are easily visualized with a light microscope.
What did experiments using porcelain filters prove? Select all answers that apply. Porcelain filters retain both bacteria and viruses Viruses are actually solutions of genetic material, which is why they were named "viruses" after the Latin for liquid poison Viruses are smaller in size than bacteria Viruses replicate in broth
Which of the following describes why soap is effective at killing animal virus particles Soap Disrupts DNA replication Soap Disrupts RNA replication Soap Disrupts the envelope of the virus Soap Denatures proteins
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.
You are working as a virologist for the CDC. In your work you spend much time searching for new viruses found to be infecting Gram Negative organisms to hopefully be able to use them to treat wastewater at wastewater treatment facilities. Which of the following are you searching for? helminths HIV prions bacteriophages viroids
Which of the following statements regarding viral genomes is FALSE? Question options: viral genomes are always comprised of RNA viral genomes are smaller than the genomes of cellular life viral genomes can be either single-stranded or double-stranded viruses can have as few as three genes viral genomes do not encode ribosomal RNAs all these statements are TRUE The ______________ of a virus is a phospholipid bilayer with embedded proteins and glycoproteins Question options: capsid chromosome envelope nucleocapsid spike receptor
The illustration best describes: A dormant bacterial infection A dormant viral infection An active bacterial infection An active viral infection
Reverse transcriptase would most likely be inside which virus? a DNA-based lytic virus an RNA-based lysogenic virus an RNA-based lytic virus a DNA-based lysogenic virus
The culture primarily contains nutrients such as sugars and a gel (agar). Why don’t viruses grow in a culture like bacteria do? Explain.
Which of the following is NOT a characteristic of viruses? they are smaller than prokaryotic cells Othey are acellular (no cellular structure) they are obligatory parasites. Othey are visible with a light microscope Saved
Select all the following statements that are TRUE regarding viruses: □ All viruses are potentially dangerous to humans because any virus can infect any host. □ Viruses are fastidious pathogens that require complex growth media. □ Viruses are noncellular particles that take over the metabolism of a cell to generate more virus particles. □ Viruses are genomes made of RNA and DNA that lack many protein. □ Viruses can infect all other known life forms on earth, from Archaea to humans.
Viruses with reverse transcriptase enzyme can make a DNA copy out of its RNA genome. What implications can this capability do in health hazards?