Your nasal sample showed colonies with a clear halo around them on blood agar. What can you determine based on that observation? a. The organism is a mannitol fermenter b. The organism is able to utilize starch c. The organism is reducing the hemoglobin and damaging the erythrocytes d. The organism is beta-hemolytic e. The organism is unable to use red blood cells as a nutrient source

Q: If a food product has 10^9 bacteria, is heated at 50°C, and crosses the X-axis at 90 min (90 min is…

A: Answer is none of the above. Take 10 min to sterilize the food product.      For calculating it, we…

Q: What is the best method to filter the precipitate from it's reaction mixture? a Gravity filtering…

A: A product is precipitated from a reaction mixture and later collected by the process of filtration.

Q: An elderly man with influenza acquires a case of pneumonia. Gram-positive cocci isolated from his…

A: Staphylococcus aureus (S. aureus) is a bacteria that causes a variety of illnesses. This strain has…

Q: Observe the results from a disc-diffusion experiment below. Which antibiotic would you prescribe to…

A: The objective of the question is to determine the most effective antibiotic for a patient with a…

Q: Q1. The total area of a haemocytometer chamber is. a) 1 mm² b) 15 mm² c) 16 mm² d) 9 mm²…

A: A hemocytometer is a tool that counts the total number of cells in blood or other biological bodily…

Q: Suppose that you wish to measure the concentration levels of PCBs in air inside a school. You are…

A: PCBs (polychlorinated biphenyls) can be found in many places, including industrial sites, landfills,…

Q: Mass spectrometry identifies microbes via a. fluorescence of antibodies. b. precipitation reactions.…

A: Answer is c.)protein fingerprints.

Q: 64 65 calx A pure culture contains only A. one species of microorganism. B. bacteria. C. a variety…

A: Culture:- it is a method of multiplying the microbes as well as eukaryotic cells in a appropriate…

Q: An infectious dose of several million cells in enteric infections seems like a lot. a. In terms of…

A: Enteric bacteria are organisms that colonize the gut. But there are several pathogenic enteric…

Q: Which type(s) of medium would be used in each scenario?a. isolating the growth of Streptococcus…

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Q: Discuss the underlying premise of each test that will be performed in this experiment. a. Biuret…

A: Amino acids are the building block of proteins. There are nearly 300 amino acids that occur in…

Q: growth

A:

Q: Many antibacterial hand soaps contain the chemical agent _____ , which belongs to the _____…

A: Sodium hypochlorite is commonly used chemical agent in mildew remover for prevention of infection…

Q: in 5 hours, your bacterial culture went from a concentration of ~105 CFU/mL to ~1.6 x 106 CFU/mL,…

A: n=1.6x106 CFU/ml N=(no of cells at the beginning )=105 CFU/ml n=Nx2x x=no. of generation…

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Q: Explain how antimicrobial agents A through D in the fol-lowing diagram compare in effectiveness…

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

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Q: Which ONE of the following is not taken into consideration when determining the ‘clinical…

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Q: Lysine decarboxylase media is yellow after incubating an organism in it at 37 degrees for 24 hours.…

A: Lysine decarboxylase is an enzyme that is used in decarboxylation test. It is used to distinguish…

Q: Which of the following is NOT a chemically definable component in culture media? a.Sheep's blood…

A: A chemically defined media is a culture medium for microorganisms or animal cells (even human cells)…

Q: Give five (5) other examples of samples that are best prepared using Smear Preparation Technique…

A: Smear preparations involve spreading cells from a culture in a thin film over a small region of a…

Q: It can be only as reducing agent:   Select one: a. KMnO4 b. H2SO4 c. Na2SO3 d. NH3

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Q: Observe the results from a disc-diffusion experiment below. Which antibiotic would you prescribe to…

A: Based on the disc diffusion results, the Staphylococci bacteria are susceptible to some antibiotics…

Q: You have aseptically inoculated an unknown organism on a blood agar plate. You return 48 hours later…

A: The unknown organism on a blood Agar plate would cause hemolysis which is the destruction of red…

Q: Use the image below to answer this question and the three questions that follow:   a) what is the…

A: Gel electrophoresis is the technique of separation of molecules on the basis of their size and…

Q: Someone want to you an antimicrobial agent that leads 99.999% inactivation when the initial…

A: Colony forming unit in microbiology is the measurement of viable bacterial or fungal cells in a…

Q: The stain used in the starch hydrolysis test: a.Is the same stain used in the capsule stain…

A: The stain used in the hydrolysis test is iodine.

Q: Why is the top part of a broth or slant culture heated in a flame immediately after removing the…

A: The correct option is d. The top part of a broth or slant culture heated in a flame immediately…

Q: What is the purpose of diluting a culture by making "quadrant streaks" (or "streak plating")…

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Q: syringes below, answer these six questions: QUESTIONS 1. Which syringe had the most floating disks?…

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Q: A factor in the zone of inhibition size on the Kirby-Bauer plate is: a. amount of medium placed…

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Q: An inoculating loop must be flamed to uniform orange-hot from base to tip   A. after culture is…

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Q: You perform a nitrate test. After adding solutions A and B, the broth remains colorless. Why should…

A: Nitrate test helps us to determine the production of nitrate reductase enzyme. By the activity of…

Q: A microbe causing a bloodstream infection is likely all of the following except

A: Certain bacteria can lead to bloodstream infections causing septicemia. It may use an external route…

Q: Using this flow chart, a species that is alpha-hemolytic and catalase-negative is…

A: In this question, we are given a dichotomous key for identification of bacteria on the basis of the…

Q: Potato Dextrose agar (PDA), used for the enumeration of molds and yeasts, is selective because it:…

A: We are authorized to answer one question at a time, since you have not mentioned which question you…

Q: E-strip testing can be used to determine a drug MIC against an organism

A: the zone of inhibition can be used to determine the susceptibility of the bacteria to wards the…

Q: A nurse who created a sterile field for a patient is adding asterile solution to the field. What is…

A: Introduction: Sterile technique is a procedures perform with no microorganism, to set up sterile…

Q: Farmers often spray spores of which bacterial species that make a protein toxic only to some insect…

A: As we know that through genetic engineering it is possible to develop crops that are resistance to…

Q: Your labmate forgot to use CBB-R250 in the process. Which of the following would  most likely be the…

A: The Coomassie brilliant blue is a staining dye used in the laboratory to quantify, visualize the…

Q: In general, protein detection methods are based on:   a. fluorescence b. column affinity c.…

A: Protein It is one of the biomolecule which is made up of amino acids. In a protein, amino acid…

Q: Ahmad has prepared a seed culture containing recombinant Escherichia coli for the production of…

A: A seed culture is a small volume of liquid culture used to inoculate (or "seed") a larger volume of…

Hematology

Hematology is the branch of biology. Hematology is the medical field that deals with the treatment of blood disorders and cancers, such as hemophilia, leukemia, lymphoma, and sickle-cell anemia. Hematologists and hematopathologists are medical professionals who specialize in illnesses of the blood and its components.