When conducting a flame test for sodium iodide, is the result positive or negative?

Q: Compare and contrast Benedict’s Test, Reagent Test, and Iodine Test in terms of materials used

A: Benedict's Test is used to test for simple carbohydrates. The Benedict's test identifies reducing…

Q: write the  protocol for Hexamine silver staining, including their reagents, materials, prinicple,…

A: Grocott’s alkaline hexamine-silver solution undergoes reduction to create precipitates of silver…

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: Oven sterilization at 121˚C was performed on glassware for 15 minutes only. Effect:  Rationale:

A: Sterilization  It is defined as the process in which micro-organisms whether bacteria, fungi,…

Q: what does chroomatography observation mean

A: Column fractionation was developed in the 1890s as a technique of separating the various components…

Q: Write the materials,  reagents, Principle and  procedure for the Periodic acid Schiff technique

A: Answer: STAINING = It is the method to colorize the smear or transparent tissue or cells in order to…

Q: Describe the Millon test.

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

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: Why is it necessary to prepare both NSS and Iodine Smears?

A: Stool smear:   A stool test is a type of medical diagnostic procedure that includes gathering and…

Q: Explain and define cold gelation.

A: Gelation (gel transition) is the formation of a gel from a system with polymers. Branched polymers…

Q: Transillumination is used clinically for the detection of:

A: Transillumination is an examination that is done with the help of a strong light shining on a…

Q: What is the chemical basis of the Xanthoproteic Test? Give the chemical reaction involved.

A: Protein is a nitrogenous organic macromolecule that is essential to human health. It is responsible…

Q: what will be the possible results in testing the solubility of oil in the water?

A: Polar or hydrophilic molecules are soluble in water and non-polar or hydrophobic molecules are…

Q: Samples subjected to a test were given. Determine the reagent/material in the test.  Methyl…

A: Different chemical tests use different reagents and apparatus depending on their working principle.

Q: What are the mechanism of action of hydrogen peroxide, rubbing alcohol, lab disinfectant and copper…

A: The main purpose of controlling microbial growth is to inhibit the spreading of diseases. There are…

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: Why do the results for the confirmed test represent  faecal coliform in the analysis of water using…

A: MPN is Most probable number. It is commonly applied for testing the quality of water.

Q: Describe the dialysate solutions used in both procedures.

A: Dialysis is a treatment performed when the kidneys of a person are not able to remove excess fluid…

Q: yield

A: The Dische's test is a chemical test that is utilized to detect the presence of DNA in a solution.It…

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: 4. Lipids can also be detected by a preliminary translucent spot test, also called the paper bag…

A: A translucent spot test is a qualitative assay for the determination of fats and oils. When the…

Q: Distinguish between a sterilant, a disinfectant, and anantiseptic. What is cold sterilization?

A: The human environment is filled with microorganisms. These tiny organisms are found everywhere on…

Q: How Teichmann test is performed and how do you relate it with forensic studies?

A: Forensic Science -- It is a branch of medical science . Forensic explains the relationship with…

Q: Explain the reason for the effect on mass spectroscopy method of diagnosis by culture conditions.

A: Mass Spectrometry is an analytical method. It is used to quantify known materials to identify…

Q: What are the possible sources of contamination that may result during the streak plate procedure?

A: The streak plate procedure is used to isolate microbial colonies in pure form. During the procedure,…

Q: Why is it necessary to use immersion oil when the 100X objective is used'

A: Note - we answer one question at a time. Immersion oil is transparent and has specific viscosity and…

Q: Discuss sabin feldman dye test.

A: A Sabin–Feldman dye test is a serologic test for toxoplasmosis diagnosis. Toxoplasma trophozoites…

Q: step by step process of Methyl Red test using a schematic diagram

A: The Methyl Red Voges Proskauer protocol is used to identify and differentiate the microbes based on…

Q: omatography with other chromatography

A: Chromatography can be defined  laboratory technique for the sepration  of the mixture. The mixture…

Q: Why is there a need to use acids and boil the sample in maceration?

A: Maceration is a common method of obtaining medicinal plants, it is an extraction process in which…

Q: What is the difference between a Hemin test and a Benzidine test?

A: Hemoglobin is a blood protein that is responsible for oxygen transport in the tissues. Hemoglobin…

Q: What is the difference between an antiseptic and a disinfectant? Can the same chemical be used for…

A: Antiseptic Disinfectant 1.       These can slow down the growth as well as can kill the…

Q: Write down the materials , reagents ,instruments,  principle and procedure for Grocott’s hexamine…

A: The Grocott's hexamine silver stain is used to demonstrate fungi. It is a part of histopathology…

Q: what is oil immersion and why is it used

A: Light microscope is a microscopic instrument which uses visible light and magnifying lens to to view…

Q: In a tabulated form, list down the advantages and disadvantages of "each" preservatives used in a…

A: A chemical agent added with any products in order to prevent decomposition through undesirable…

Q: For preparation of a smear on a slide, what is the purpose of heat fixation? What problems can arise…

A: The preparing a slide that has to be observed under a microscope there are multiple steps that are…