samples and trying to determine characteristics they contain. You determine sample M requires an environment found in a hot spring. While sample P requires rat liver cells to survive. Based upon this information please classify what type of sample M and P are. Provide the term to each
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- 1. Please discuss how Gram-Positive and Gram-Negative Cell walls are different from each other. What makes them distinct? How can they be tested and what observations will show from this? 2. You have two microorganism samples and trying to determine characteristics they contain. You determine sample M requires an environment found in a hot spring. While sample P requires rat liver cells to survive. Based upon this information please classify what type of sample M and P are. Provide the term to each and define in detail. (hint for sample P: Q Fever)Polymyxins are antibiotics that are used in the treatment of Gram-negative bacterial infections. You are given samples of two different types of bacteria. You are told that Bacteria A is Gram-negative bacteria and Bacteria B is Gram-positive bacteria. Describe, in your own words, how you would confirm the bacterial types.In a series of infection experiments, a researcher discovers that the ID50 value for the infectious bacterium Parasiticum mucoides is 100, and that the ID50 for another infectious bacterium, Donoteatum thisbacterium, is 15,000. Given these data, a person exposed to 1,000 bacteria of each type would be more likely to be infected by which bacterium? Group of answer choices There is no way to know given the information provided Both infections are equally likely Parasiticum mucoides Donoteatum thisbacterium
- A bacterium has the following characteristics:∙ It adheres to the human intestinal lining using a feature that protects it from phagocytes, bacteriophages, and dehydration∙ It can survive being boiled∙ It contains no plasmids and relatively little peptidoglycanWhich of the following characteristics allows this bacterium to adhere to the intestinal lining? Group of answer choices A. fimbriae B. pili C. an endospore D. a flagellumpropose a hypothesis regarding the organisms (staphylococcus, escherichia, pseudomonas, and bacillus) that will be resistant to the most disinfectants, and why? if the hypothesis is supported, what specific experimental results will be observed? what would be the independent and dependent variable? zone size, disinfectant type, colony countNote that it is not appropriate to self-diagnose outside of a medical context and this is a completely hypothetical scenario. Imagine you have a rash on your foot. You're concerned that it's an infection and inoculate a sample onto an agar plate. You wonder, How can I figure out whether the pathogen is a bacterium vs a eukaryote? You decide to use lab supplies to get a basic understanding of the pathogen. Be specific about what tests you use and what you expect the results to be. Limit yourself to experiments we could do in our lab. What is one experiment you could do, involving culturing the organism?
- Note that it is not appropriate to self-diagnose outside of a medical context and this is a completely hypothetical scenario. Imagine you have a rash on your foot. You're concerned that it's an infection and inoculate a sample onto an agar plate. You wonder, How can I figure out whether the pathogen is a bacterium vs a eukaryote? You decide to use lab supplies to get a basic understanding of the pathogen. Be specific about what tests you use and what you expect the results to be. Limit yourself to experiments we could do in our lab. What is a procedure you could do, involving making a slide of the organism?Which of the following statements is true? Select one: O a. Gram-positive bacterial walls have a relatively thin layer of peptidoglycan anchored to the acids O b. Peptidoglycan is a fatty acid O c. The cell walls of bacteria are composed of peptidoglycan O d. Peptidoglycan is found mainly in the cell walls of fungi, algae and plantsImagine a microbiologist performed a series of Gram stains but forgot to perform the destain step during the stains. Which type(s) of erroneous results would the scientist observe? Cells that are actually gram-negative would appear gram-positive Cells that are actually gram-positive would appear gram-negative Both gram-negative and gram-positive cells would appear to be the opposite
- Which of the following is not part of Koch’s Postulates? a. A specific microorganism must be present in a disease b. The organism must be isolated into pure culture c. Living organisms spring forth from non-living materials d. All of the choices are part of Koch’s PostulatesYou work in a microbiology lab has been assigned to make routine identifications of Citrobacter freundii, Lactobacillus casei,Pseudomonas fluorescens, and Staphylococcus epidermidis. Using the dichotomous keys write up a lab protocol that everyone in your lab can use to identify these four organisms from the samples that your lab will receive. Create a Dichotomous Key(s) and an explanation.You perform a quadrant streak and isolate a single colony which contains two distinct species of bacteria. You repeat this with the same results. Provide a possible explanation for this result that does not involve contamination of the sample.