which kind of sample gives positive result for Molish test?
Q: What gram-positive bacterium can give a positive presumptive test?
A: In microbiology, the presumptive test is used to find out the presence of gas-forming lactose…
Q: What is a mixed culture? A contaminated culture?
A: A microbiological culture, or microbial culture, is a technique for increasing microbial creatures…
Q: Match the test with the appropriate reagent/ chemical a. DNA test b. Paper chromatography c.…
A: Genetic material is nothing but the sequence of nucleic acids which is called as DNA. It contains…
Q: What is the purpose of the pour plate technique? If a pure culture is used to inoculate the plate,…
A: PURPOSE OF POUR PLATE TECHNIQUE The pour plate techniques can be used to determine the number of…
Q: Identify the method of sterilization/ chemical agent described At 15psi, the temperature reaches…
A: Given information: At 15psi, the temperature reaches 121 degree Celsius requiring only 15 to 20…
Q: Give two reasons for heating the slide after the smear is air dried?
A: Smear is the thin film of the sample that is spread over the slide to be observed in the microscope.…
Q: What would be the expected out come of a Nitrate reduction test If the bacteria is a pathogenic…
A: Nitrate Reduction Test is used to determine the ability of an organism to reduce nitrate (NO3) to…
Q: in the clinic, the acid-fast stain is used to diagnose infection with which bacterium?
A: The Ziehl-Neelson (ZN) stain is the most commonly utilized of the different types of AF staining…
Q: ç00 HN-CH-CH," CHR CHR A. В. D.
A: Biuret test is performed in order to detect the presence of peptide bonds.
Q: which bacteria is Coccobacillary,gram negative, non motile and negative oxidase test?
A: Bacteria are microscopic organisms which belong to prokaryote because these are unicellular…
Q: What is the media used in Catalase test and its expected results?
A: Catalase is an enzyme that is found in the cell in most of the organism that protect the cell from…
Q: Physical methods of sterilization include :
A: disclaimer: since you have posted multiple questions we have answered the first question for you. if…
Q: Why is there a need to use a staining agent in observing the specimen?
A: Staining agent: The things that owes-out stains were recognized as staining agent,…
Q: Given Test Reagent Positive or Negative Result Reason/Explanation Ribose Bial’s Orcinol Test…
A: Carbohydrates are a type of macronutrient found in certain foods and drinks. They include sugars,…
Q: Serial dilution is recommended prior to pour and spread plate. Why is this so?
A: Pour Plate: it is a technique in which A plate made by combining the inoculum which is cooled but…
Q: Does a positive presumptive test mean that the water is absolutely unsafe to drink?
A: In microbiology, the presumptive test is used to find out whether gas-forming lactose fermenters…
Q: Disinfectant Concentration Growth after time of exposure (minutes) Control 5 minutes 10 minutes…
A: * Disinfectant is a chemical substance that inactivates or to destroy the microorganisms that are…
Q: amylasw test test for? medium+ - reagents + Test/why?
A: Amylase is an enzyme produced by the salivary glands to digest carbohydrates. The amylase test is…
Q: What is the significance of heat fixing the smear?
A: Gram staining is a common laboratory technique in microbiology that is used to differentiate…
Q: What is the purpose for testing a specimen for hydrogen sulfide production?
A: Hydrogen sulfide is produced when a bacterial strain reduces the sulfur compounds. The specimens…
Q: What do to do when the disstillation did not make the sample completely pure? What could have went…
A: Distillation is a process that is based upon the boiling points of various liquids present in the…
Q: Gram staining techniques
A:
Q: What does the presence of gas in the Durham tubes for the presumptive test indicate?
A: Presumptive test : it is a test to identify bacteria from the large soil, water medium. It is known…
Q: What is a Urease test
A: Urease Test: A biochemical test that detects the alkaline fermentation of urine…
Q: hich of the different carbohydrate test would give a positive result for maltose? Describe the color…
A: Carbohydrates are the macromolecules that consist of carbon, hydrogen, and oxygen in the molecular…
Q: Does a positive presumptive test mean that the water is absolutely unsafe to drink? Explain
A: Water is tasteless, transparent, inorganic. Colorless, and odorless chemical substance. Its chemical…
Q: Explain why it is important to use only a small amount of bacteria when preparing a smear
A:
Q: Immediately after stirring 1 hour after stiring Original misture Suction filiration Figure 1 Figure…
A: Mixtures are defined as materials containing 2 or more chemical substances mixed together. In case…
Q: Why does the oxidase test must be performed from blood agar or another medium without a fermentable…
A: Biochemical tests are used to identify microbial diversity based on variations in the biochemical…
Q: What is the result of Staphylococcus epidermidis in the TSI agar test?
A: Bacteria are microorganism that most commonly occur in the soil, air, water and in adverse…
Q: What is the media used in Urease Test and expected results?
A: Urease test is defined as a biochemical test that distinguishes the basic alkaline fermentation of…
Q: Which test require a straight line inoculation? Choose all that apply
A: Answer: STRAIGHT LINE TECHNIQUE : It is the streaking technique of bacterial colony over the agar…
Q: n is 100x, what is the magnification of n is 40x, what is the magnification of t gnification is 10x,…
A: In light microscopy, there are several different types of microscopes, but the four most common are…
Q: Why is it necessary to perform a plate count in conjunction with the turbidimetry procedure?
A: Plate counting is one of the most fundamental techniques used in microbiology. It is used to…
Q: Application of neutralization test.
A: antigen-antibody reaction in which the certain effect of a bacterial exotoxin or a virus is blocked…
Q: Why is it necessary to make a skin puncture to a depth of 3mm?
A: Phlebotomy refers to the process of puncturing the vein with a cannula to collect blood. Blood…
Q: Why is 15 minutes generally used for sterilization? Why is agar added to medium?
A: Sterilization is the process in which all life forms like microbes (fungi, bacteria, viruses,…
Q: To measure the culture temperature, why is the thermometer placed in a tube separate from the…
A: A microbe or microorganism is a microscopic organism that is too small to be seen with the naked…
Q: Methyl red test does the color of the medium change to red when methyl red was added? Is it positive…
A: Biochemical method of bacterial identification is a classical method that is used for the…
Q: how to find out the test is differential or selective in the microbiology lab test?
A: Many kinds of medias are used in microbial study. Two types of media having similar inferred names…
Q: What microorganisms other than coliforms are likely to give positive presumptive test?
A:
Q: Why should the specimen be albumin free when performing the chloride test for urine?
A: Urine specimen should be free from albumin when performing the chloride test due to the following…
Q: sabuoraud slope culture contains a black mould. describe a diagnostic method you can use to identify…
A: Introduction:- SDA is essentially utilized for the particular development of yeasts, molds and…
Q: Is the ant test the same as the odor test in the physical examination of urine?
A: Kidneys are the main organs of the urinary system. The nitrogenous waste is usually excreted in the…
Q: Write down the materials, reagents, Principle, procedure and results for Ziehl-Neelsen stain
A: It is a differential staining technique which was first developed by Ziehl and later on modified by…
Q: Why should be avoided boiling more than 5 minutes in Barfoid test?
A: Barfoed test is carried out to detect the presence of monosaccharides in the sample. This test also…
Q: which tests involves deliberate contamination of an inanimate surface with a mircobial suspension?
A: According to the question, we have to explain the name of the test involves in deliberate…
Q: What method can be used to achieve sterilization?
A: It is required to describe the method to be used to achieve sterilization.
Q: Why did you perform the catalase test on colonies growing on nutrient agar plates but not on the…
A: Catalase test is used to identify the presence of catalase enzyme in the bacteria. Catalase is an…
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