Q: While conducting the Hydrogen Sulfide Test (SIM Agar) you open up one of the tubes and it gives off…
A: Sulfur, Indole, and Motility (SIM) Media It assesses an organism's ability to do many things,…
Q: when testing unpasteurized milk you get a colony count of 118 colonies on plate A and 110 colonies…
A: As the name suggest, the serial dilution is a series of the sequential dilution performed to convert…
Q: Why is skin contamination such a big problem in blood culture test?
A: Contamination can arise during the preparation of the venipuncture or catheter insertion site, the…
Q: Alchohol based hand sanitizers are effective against influenza. True/False?
A: Influenza is a viral infection caused by the influenza virus. It is commonly known as flu. There are…
Q: How would you draw out a step in an experiment that included the following? Please help, I am so…
A: Horizontal gene transfer (HGT) is largely responsible worldwide for increasing the incidence of…
Q: Why are the results of plate counts expressed as the number of colony-forming units, rather than the…
A: Microbes are small living organisms which can not be seen through naked eyes. The study of these…
Q: What method is best for for isolating a colony on a TSA plate? A. Swab plate B. Straight line…
A: An isolated colony represents a pure source of an organism from which a pure culture can be started.
Q: During a phenotypic method of identifying an unknown microbe, the specimen was noted to be positive…
A: Introduction The micro-organism is the organism that is too small to be seen with the naked eye. It…
Q: For Staphylococcus aureus, indicate which tests need to be done & what media you need. Fill in box…
A: Staphylococcus aureus is a spherical-shaped cocci that belongs to the family of Firmicutes. It is…
Q: Figure 1. Cytotoxicity test on 96 well plates that was monitored by ELISA reader 3- Discussion 1-…
A: The degree to which a substance can harm a cell is referred to as its cytotoxicity. Cytotoxic refers…
Q: Which test below could be used to identify antibodies against pandemic coronavirus in a person…
A: Covid sickness (COVID-19) is an irresistible illness brought about by a newfound Covid. A great…
Q: What specimen would be collected for an antigen test? Why is it important to not touch the tip of…
A: Coronavirus disease (COVID-19) is a recently found coronavirus that causes an infectious disease.
Q: Please insert a photo of your cross-streaking for individual colonies and describe your results)…
A: The advantage of using solid media has been increased by describing the colony morphology, including…
Q: You are given an unknown bacterial culture and you want to determine if it is resistant to…
A: Antibiotics are chemicals that fight bacterial infections in humans and animals. They work by…
Q: Why do you think rapid methods so helpful to identify pathogens microbes in clinical settings. Why…
A: Introduction: Pathogens are the microorganisms which has an ability to cause disease. Mainly…
Q: Give the uses/functions and images of each apparatuses Basic Laboratory Equipment Uses/Functions…
A: Antibiotic discs are used in microbiological studies to observe the effects of various antibiotics…
Q: Write the letter of your choice at the start of the sentence then support it with a short…
A: The Kirby Bauer method is an universally accepted , USFDA approved method commonly used in…
Q: Bacteria should grow on plates with media containing . ..... to perform blue/white screening x…
A: Bacteria should grow on plates with media containing beta galtoside is required to perform…
Q: TRUE or FALSE only! 1. Pure cultures contain only a single species and no other organisms. 2. Pour…
A: 1. True 2. True
Q: I want to ask the question related to antibiotics resistance? The question is the non-existance of…
A: Antibiotic resistance is defined as the genetic ability of bacteria to encode the resistance genes…
Q: If the test samples are positive for the antigen in the ELISA we are using, what color will you see?…
A: ELISA: ELISA ~ Enzyme-Linked Immunosorbent Assay In analytical…
Q: WIDAL TEST Principle: The test depends on the ability of antibody in the patient’s serum to…
A: Typhoid is spread through contaminated food and water and results in typhoid fever. Organs such as…
Q: You have learned many different techniques so far this semester that allow us to identify pathogenic…
A: A pathogen is an organism that causes illness in its host, with virulence referring to the intensity…
Q: In the Kirby-Bauer test, which of the following must be consistent? a. concentration of bacteria…
A: Kirby-Bauer test: It is an antibiotic test also known as KB testing. It is used to test which…
Q: You counted 40 colonies on a plate in your dilution series. The plate was inoculated with 1.0ml from…
A: A microbial sample will have enormous amount of cells. To estimate this by calculation, the sample…
Q: The best medium for using antibiotic susceptibility testing is _________________, the reason why…
A: Antibiotic susceptibility test is basically used to measure the ability of an antimicrobial agent or…
Q: On a spread plate, you count 50 colonies. The plate was created from a 10^-2 dilution and 0.2 mL of…
A: Microbial culture refers to the method of letting the micro-organisms multiplying in the culture…
Q: A sample of well water is tested for its bacterial content in a plate count assay. A one-milliliter…
A: Given that, after incubation, the number of formed colonies are 83. One ml of fourth successive…
Q: Below I have attached the image of gram stain. -We need to find the name of the compound. And after…
A: Gram negative bacteria - The bacteria which are unable to retain crystal violet stain in the process…
Q: serology (elisa) lab: Why are enzymes used in this immunoassay?
A: Enzymes are biological catalysts. They speed up the rate of reaction. They decrease the activation…
Q: Which of the following best describes a positive reaction in an ELISA? A color change takes place.…
A: Serological tests are used to identify the antigen and antibody in the patient’s serum. It helps to…
Q: Agar was not completely set prior to inoculating with the organism. Effect: Rationale:
A: Bacterial cultivation requires specific types of medium that can provide some of the basic…
Q: A laboratory technician performed a series of 10 fold serial dilutions shown below. he plated 0.1…
A: In this question, we are given colony count from different 10 fold dilutions. The volume plated from…
Q: Which cellular structure is being detected in the motility test? bacterial ribosomes bacterial cilia…
A: Prokaryotes are characterised by the absence of nucleus and membrane bound organelles.
Q: The medium shown here was inoculated with a bacterium then incubated for 48 hours; an uninoculated…
A: A control tube is used to minimize the variable factors other than the one being tested.
Q: Many vaccines are heat sensitive due to their high concentration of proteins. Which of the following…
A: A heat sensitive vaccine is one which if exposed to temprature above certain specific values will be…
Q: How do you know if you have a ‘countable’ plate when doing a dilution series? Two plates…
A: The concentration of stock solution can be calculated by first diluting the stock into a suitable…
Q: What test best matches the image below? O Novobiocin O ELISA O DNA hydrolysis O MSA
A: DNA hydrolysis test or DNase test is commonly performed test to check the ability of the organism to…
Q: serology (elisa) lab: What problems can prevent the immune system from working properly?
A: The immune system is our body’s defense mechanism against infections and other harmful invaders.
Q: Which of the following would typically be the initial indicator of bacteria growing within a blood…
A: Blood agar is one of the commonly used culture methods used for growing micro organisms and growth…
Q: In agglutination reactions, the antigen is a _____; in precipitationreactions, it is a _____.a.…
A: When a particulate antigen is mixed with its antibody in the presence of electrolytes at a suitable…
Q: he bacteria which is novobiocin resistant is
A: The Novobiocin test is used to distinguish coagulase-negative staphylococci and to identify…
Q: The total number of cells in a culture is counted using the trypan blue exclusion assay and is found…
A: Dilutions are used in microbiology to reduce bacterial concentrations to a needed concentration for…
Q: serology (elisa) lab: What does ELISA stand for?
A: ELISA is an immunoassay.
Q: what do the colors in the kirby bauer plate represent black/dark area = tan/yellow are small…
A: KIRBY BAUER METHOD- Antibiotic sensitivity test is performed by using the agar diffusion method in…
Q: serology (elisa) lab: Why did you assay your samples in triplicate?
A: Triplicate means you do the experiment in multiple of 3 or you 3 wells in ELISA plate.
Q: serology (elisa) lab: Why do you need to assay positive and negative control samples as well as your…
A: ELISA means an enzyme linked immunosorbent assay is a serological test which is done to detect and…
Q: Does the gram staining method still have a place in today's world of advanced diagnostic methods? If…
A: Gram staining is a type of staining which is used to differentiate bacteria on the basis of…
Q: You have performed an experiment and your aim is to obtain pure colonies. However, you observe some…
A: Bacteria are prokaryotic organisms. They are microscopic single-celled organisms that can live in a…
Q: Which of the following methods is most sensitive for identifyingdifferent strains of a microbe?a.…
A: Microorganisms or microbes are small living organisms that can be observed with the aid of…
decreased motility |
fluorescence |
agglutination |
a color change |
visible bubbling |
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
- Why is skin contamination such a big problem in blood culture test?In order to do electron microscopy the samples had to be specially prepared. Were the cells alive at the time of viewing? Explain why you said yes or no I need help answering this queshtion the answer is with the article and it has to be as short as possible URL: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC106848/__________ indicates ________________ in the cell culture. Bovine Serum, trypsin Yellow media, waste buildup Orange media, contamination Clear pink media, cell suspension
- The student advises using the same selection procedures and inoculating a 5 mL overnight culture with the transformed cells instead of searching for transformed coli on LB agar plates in order to save time. Why isn't this a wise decision?What test best matches the image below? O Novobiocin O ELISA DNA hydrolysis O MSADo you think that your hand were "sterile" after any of the four treatments? (only water, Ivory soap and water, Dial soap and water, Hand Sanitizer). Explain your answer
- Normal Streptococcus pyogenes No Spacing Heading 1 Heading 2 Streptococcus pneumoniae Title you observed the growth of Streptococcus pyogenes, Streptococcus pneumoniae and Staphylococcus epidermidis on the Horse Blood Agar (HBA) plates. The colonies and their surroundings looked like those in the image below. Based on the content of (HBA) plates and the specific properties of these three organisms, explain the particular appearance of the colonies on the plates. Name and describe the three subtypes of a process that occur on these plates. Styles Dictate Sensitivi Pane Staphylococcus epidermidis Focus E EFigure 1. Cytotoxicity test on S96 well plates that was monitored by ELISA reader 3- Discussion 1- Explain another methods by which cytotoxicity is measured ?On the skin, Propionibacterium acnes converts lipids secreted by the oil glands to unsaturated fatty acids, such as ________ ________, that have strong antimicrobial activity against Gram-negative bacteria and some fungi.