You have found a putative virus which is able to infect a bacterium causing increased mortality and resistance to all antibacterial agents. You have systematically purified the sample but have an unknown concentration of viruses. You perform the following serial dilutions.

Q: A student completed a plate and liquid lysate followed by a plaque assay. The volume harvested for…

A: PFU is the amount of viral particles capable of forming plaques in a sample. PFU of a viral sample…

Q: In performing an agar overlay for E. coli bacteriophage isolation, formation of ____________…

A: The agar overlay is a common tool in the culture-based research of bacterial viruses…

Q: Peptidoglycan on bacterial cell walls is stained by crystal violet dye and for this reason those…

A: True

Q: The world is facing a Corona Virus (COVID-19) Pandemic and as a potential scientist and a…

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Q: You have a culture that has 5 X103 cfu/ml of bacteria in it. You perform a serial dilution by adding…

A: In microbiology and bacteriology, the technique of serial dilution is a fundamental method used to…

Q: In a real study, scientists investigated the effectiveness of seven hand sanitizers. They found that…

A: LRV is an abbreviation for "Log Reduction Value," which is a measure of a disinfectant effectiveness…

Q: You have conducted serial 10-fold dilutions and measured the cfu (colony forming units) of a…

A: Given information CFU for the bacterial sample= 5 colonies volume of the sample= 0.4 ml Dilution=…

Q: All bacteria produce spores. a) Trueb) False

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A: Answer :  A syringe filter with a pore size of 0.22 micrometers is able to completely remove all…

Q: Samples from an ill patient were collected by a physician for testing. A bacterial infection is…

A: Infections are the due to the activity of microbes in the body. Microbes can colonize in human body.…

Q: Which of the following treatments directly destroys microbial cells living on animal tissue?…

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Q: Explain why only a virulent virus (like T4 phage), rather than a temperate virus, can be used in our…

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Q: The following are the references for the indicated tests EXCEPT Select one:   CLSI / Evaluation of…

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A: Approach to solving the question: Detailed explanation:  Examples: Key references:

Q: Why do you think  rapid methods so helpful to identify pathogens microbes in clinical settings. Why…

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Q: Suppose your professor handed you a test tube with 2.0 mL of M. foliorum infected with bacteriophage…

A:

Q: what are the considerations in doing a viral specimen collection

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A: Microorganisms, such as bacteria, viruses, and fungi, are ubiquitous in our environment. Many of…

Q: Which one of the following is the most resistant microorganism for sterilization: Select one: a.…

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Q: A patient sample will be analyzed. You are responsible to quantify the bacteria number. The dilution…

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Q: Discuss how you will limit exposure of your bacteria in this lab to the outside environment

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Q: Of the family of viruses we've studied, what type of virus is HIV (human immunodeficiency virus)?…

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Q: You are provided with a sewage wastewater sample to assess for the presence of bacteriophages.…

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Viral Infections

Viruses are abundantly found, minute entities that have genetic material enclosed within a protein coat. The proteinaceous material enclosing the genetic material of the virus is called a capsid. The genetic material could be either DNA (deoxyribonucleic acid) or RNA (ribonucleic acid). A virus is too minute to be looked at with naked eyes and therefore visualized with the help of a microscope. They are acellular entities that require a host for processes, such as replication, transcription, translation and multiplication. Plants, animals, and bacteria act as host wherein the virus reproduce. Viruses cannot multiply outside the host's body and thus are considered nonliving outside the host body.