Describe the appearance of the  protein solutions in each of the tubes after addition of the alkaloidal  reagents.

Q: Which is the commonly occurring sugar in milk? Will the milk containing this sugar gives a positive…

A: The nutrient-rich drink, which is produced with the help of mammary glands in mammals, is called…

Q: When viewing the capsule stain, why do the capsules appear colorless? Explain

A: According to guidelines we have to answer the first question only. so please kindly post the…

Q: Urease breaks down urea into what product? What color is an indication of a positive urease test

A: Urease is catalytic enzymes that hydrolysis the urea . They belong to the super family of amyl…

Q: Ex. 5-4 Catalase 1) In the Catalase test (5-4), if bacteria was added to hydrogen peroxide on the…

A: The study of tiny living creatures such as bacteria, viruses, fungus, algae, and protozoa is known…

Q: What is the result for the yellow tube of Methyl red test? What must the pH be in each tube? What is…

A: Methyl red test This test usually aims to differentiate the facultative anaerobes enteric bacteria.…

Q: What is the purpose of adding the yogurt to the cooled milk in step 5?

A: Yogurt is ancient, and it is defined as a milk product that is fermented by 2 bacterial strains:…

Q: What would be the expected out come of a phenol red test If the bacteria is a pathogenic intestinal…

A: Phenol Red Broth is a general-purpose differential test medium typically used to differentiate…

Q: Describe the Millon test.

A: Proteins are the macromolecules that contains amino acids as their monomers. There are 20 different…

Q: What is the purpose of chewing gum in the Snyder Test procedure outlined?

A: Dental caries is the disease of teeth in which microbes demineralize the teeth leading to a cavity.…

Q: 4 mL of 10% TCA solution was added to 1 mL of serum and after mixing, it was waited for two minutes…

A: Calibration graphs are used to estimate the concentration of unknown sample by plotting it against…

Q: Provide the Principles and detailed procedures of the following tests for the "Color Reaction of…

A: Hopkins - cole test Principle -In this test , concentrated H2So4 cause dehydration of tryptophan…

Q: Between Proteus mirabilis and Proteus vulgaris which are positive or negative for ornithine…

A: ornithine decarboxylase test is a special kind of biochemical test that helps to determine whether…

Q: In using the centrifuge machine, how will this be remedied if there are only 3 separate liquid…

A: Centrifuges are laboratory equipment that is used to separate components in a mixture based on their…

Q: What is the purpose of using a strong acid in the Seliwanoff’s test

A: Carbohydrates are polyhydroxy aldehydes or ketones or biomolecules that yield polyhydroxy aldehydes…

Q: In detection of urea in urine what are the mechanisms, reactions, possible result and interpretation…

A: Urea is considered to be a waste product synthesized in the body by the oxidation of amino acids…

Q: what is the purpose of the FeCl3 in this aspirin test?

A: Now, setting up and observing the breakdown:1) Divided: We split apirin into two tubes, one with HCl…

Q: Which of the following are positive for the production of indoor from the amino acid tryptophan?

A: indole is produced by reductive deamination from tryptophan through the intermediate molecule indole…

Q: What is the color result of 1% solution of casein, Albumin, Gelatin in ninhydrin test? Include…

A: Ninhydrin test: Chemical test to detect presence of ammonia, primary/secondary amines, or amino…

Q: In the amino acid decarboxylase test (lysine decarboxylase), we added mineral oil to the tube before…

A: Introduction The Lysine Decarboxylase Test Is Based On Some Bacteria's Capacity To Convert L-lysine…

Q: f four identical test tubes contains same amount of glucose, lactose, starch,  and sucrose solution.…

A: Carbohydrates are polyhydroxy aldehydes or ketones that are associated with reducing properties and…

Q: Kindly refer to the photo attached, thank you so much!

A: There are 20 standard amino acids that make up all the proteins inside the cell. The amino acids are…

Q: Describe two methods to test for the enzyme urease.

A: Urease is an enzyme that catalyzes the hydrolysis of urea forming ammonia and carbon dioxide. They…

Q: What is the principle involved in the Acrolein test? What is its purpose?

A: Qualitative tests are the chemical or physical tests involved in identification of certain…

Q: State the difference between reducing and non-reducing sugars.   Give one test to show the…

A: Carbohydrates are made up of carbon, hydrogen, and oxygen molecules. Carbohydrates are the most…

Q: What is the purpose of Xanthoproteic test and explain the observation or rection for albumin and…

A: Xanthoproteic test is a type of colour test to detect a specific functional group, structural…

Q: a) mentioned the name of simple laboratory method to roughly estimate the concentration of an…

A: Proteins have wide variety of essential function in our body like providing energy, structural…

Q: Will disaccharides and polysaccharides give positive results in Molisch test? How?

A: Molisch’s test is a specific test for the identification of carbohydrates in a sample. The test uses…

Q: Erysipelothrix rhusiopathiae is a gram positive bacilli that survives in water contaminated by a…

A: Erysipelothrix rhusiopathiae is a gram-positive, rod-shaped, nonmotile, bacillus bacteria.

Q: What does translucent spot mean with regards to lipid? Identify the control for this test.  1. Oil…

A: Introduction  Oils and fats are a reliable source of energy. A certain amount of human body weight…

Q: Describe the Ninhydrin test. What does Ninhydrin test detect?

A: The ninhydrin test is a chemical procedure for detecting ammonia, primary/secondary amines, and…

Q: Think of another type of test to determine whrther a person is lactase persistent or nonpersistent.…

A: Lactase is an enzyme that is generated by a variety of species. It is found in the brush boundary of…

Q: Absorbance is directly proportional to glucose concentration for both routine clinical glucose…

A: Quantitative tests help to determine the concentration of target substance in the solution. The…

Q: Which kind of carbohydrates gives positive result with Seliwanoff test?

A: If a sugar contains a ketone group, it is a ketose while a sugar containing an aldehyde group is…

Q: Indicate whether you think that the number of cfu/ ml calculated would be too high or too low if you…

A: Cfu refers to the colony forming unit which is formed through continuous replication of a single…

Q: A milk sample was tested for the presence of typhimurium. Using a 10 microliter calibrated loop, a…

A: Serial dilution is the technique to find the concentration of bacteria in a sample when there are…

Q: Explain what is Barfoed's Test.

A: Introduction  The simplest carbohydrates are monosaccharides because they cannot be digested into…

Q: Explain how to conduct a Kirby-Bauer disk diffusion test. Include all of the steps involved

A: INTRODUCTION Kirby - Bauer Disc diffusion method Kirby - bauer disc diffusion method is widely known…

Q: How much serum is needed to create 2μL of a 1:20 dilution

A: Question is related to drug calculation .  Detailed solution in step 2.

Q: Briefly describe the phenol coefficient test.

A: Sterilization is a process that involves the removal of harmful microbes either by inhibit the…