Q: prepare 250ml of 0.10 m NaOH from solid NaOH and water
A: Molarity: The moles of a solute per litre of a solution is called as molarity (M).
Q: Why Do not add more than 2 drops of copper sulfate in Biuret reagent?
A: There are several biochemical tests to identify the presence of protein in a sample. There are tests…
Q: What is the purpose of doing the silver nitrate test? Write the chemical equation involved here
A: Introduction: Silver nitrate is an inorganic compound and its formula is AgNO3 with a molar mass…
Q: How do you prepare 50 ml of 20 mg/ml proteinase K from 50 mg/ml stock solution
A: Proteinase K is a serine proteinase enzyme used to digest proteins. It is produced from a…
Q: The following structure is D-sorbose. Which reagent will oxidize D-sorbose? CH2OH C = 0 Н-С-ОН НО -С…
A: Sorbose is a ketose belonging to the group of monosaccharides
Q: Kovac's reagent is added to detect indole. True or False?
A: True
Q: What materials can easily diffuse through the lipidbilayer, and why?
A: The lipid bilayer is one of the components of the cell membrane. This polar membrane manages the…
Q: Which method is suitable for determining the amount of water in food?
A: The food business relies on moisture content analysis to ensure food shelf life and quality, but…
Q: What are non-ionic detergents?
A: Detergents are cleansing agents and commonly made from synthetic resources such as petroleum…
Q: Why is there a need to filter the alkaline solution after adding the Barium chloride solution?
A: In an aqueous solution, barium chloride acts as a simple salt. However when dissolved in water, it…
Q: Using 25 µL of a patient's serum, how much diluent would be needed to create a 1:2 dilution? ul
A: Firstly, we convert the 25ul into ml . i.e. 25 ul = 0.03 ml Then, there will be the multiplication…
Q: what is the effect and rationale when three milliliters instead of 1 mL was placed in the Petri dish…
A: Pour-plate method is usually the method of choice for counting the number of colony-forming bacteria…
Q: What is the EFFECT and RATIONAL of Molten agar mixed with bacterial suspension has temperature…
A: Bacteria can be cultured in either a liquid media or a solid media based on the purpose of culturing…
Q: What would be the best buffering agent to choose if you wanted to buffer an enzyme reaction or…
A: pH is the measure of the strength of H+ ion or Hydronium ions in solution. pOH is the measure…
Q: Why did the blank used in experimental procedures contain substrate, buffer and water?
A: A blank or blank determination is an analysis without a sample (Enzyme). Any enzyme assay requires a…
Q: Why potato strip increase in size when placed in distilled water?
A: Osmosis is defined as the movement of water molecules from the higher water potential region to the…
Q: Plain soaps have what level of germicidal activity?
A: This question is based on action of the plain soap.
Q: How does the concentration of H+ change when a culturemedium at pH 5 is adjusted to pH 9?
A: pH is the measure of acidity or basicity of a solution. If pH of a solution is 7, then it is…
Q: What is the [CH3COO−]/[CH3COOH] ratio inan acetate buffer at pH 4.00?
A: A buffer is a mixture of weak acid/weak base and its conjugate base/acid. It is an aqueous solution.…
Q: You have been assigned to your first comatose patient, and you notice 0.12% chlorhexidine gluconate…
A: Chlorhexidine gluconate solution: Chlorhexidine gluconate is used as oral rinse to prevent…
Q: can you show how to calculate the amount of two components for the required volume of a buffer with…
A: Given Values: Concentration of Tris = 0.25 M Concentration of Glycine = 1.92 M Concentration of SDS…
Q: For the serial dilution, your stock solution must have a concentration of 3.5 mg/mL. How much…
A: Here we are trying to prepare the stock solution from the raw red cell (RBC) solution. The parameter…
Q: What is the fluid thioglycollate medium? Please explain the testing and its results and the…
A: Microbiology laboratory uses various kinds of culture media to identify the biochemical…
Q: How should you prepare your running buffer?
A: SDS-PAGE is method of separation of protein based on its size. Running buffer of the SDS-PAGE…
Q: why is dtt added onto the total protein buffers?
A: Buffer is a solution that helps in maintaining the pH during a reaction. All proteins can act as…
Q: what is the standard concentration for solutions in an electrochemical cell?
A: An electrochemical cell is a battery that can either produce electrical energy from chemical…
Q: which ane of the following reagents cannot be used for determination of lipid concentrations?…
A: Lipid is a molecule which is a part of cell and cell membrane. It gets dissolved only in nonpolar…
Q: How do you prepare 500 mL pH 6 Citric acid/Phosphate buffer in the laboratory. Please explain…
A: A buffer solution is a solution that only changes slightly when an acid or a base is added to it.
Q: What is the ratio of TRIS/TRIS-H+ in a TRIS buffer at pH 8.7?
A: TRIS is tris aminomethane. It is an organic compound. It is mostly used as a component of buffer…
Q: When counting WBCS, what is the best diluent? O Turk's solution O 0.85% NaCI O 70% alcohol O…
A: In the immune system, lymphocytes refer to the white blood cells that play an important role in the…
Q: What ingredients we should avoid after apply 0.5% bakuchiol?
A: Introduction Bakuchiol Is A Vegan Skincare Component Present In The Psoralea Corylifolia Plant's…
Q: Why Cepacol is used ?
A: Cepacol is a drug which relieves pain associated with a sore throat or mouth. It can be administered…
Q: What are the negative effects of using Disulfiram ?
A: Substance abuse It is a condition characterized by uncontrolled use of substances for…
Q: Explain how to prepare 250 ml liquid and 500 ml solid form separately from LB (Luria Bertani) medium…
A: The LB agar medium is designed in such a way that it is nutrient rich which supports the growth of…
Q: Why does Alka-Seltzer foam and bubble when dissolved in water? Which ingredient is the antacid?
A: Alka- Seltzar is a type of medicine which is used to cure indigestion, stomach pain or upset…
Q: cal is utilized as the reagent known as VP-B?
A: The Voges-Proskauer (VP) test is generally used to test if an organism produces acetyl methyl…
Q: In protein electrophoresis, what reagent present in the sample buffer is used to eliminate…
A: Protein electrophoresis is a test used for the measurement of specific protein in a sample. The…
Q: Are Xanthoproteic and MillonNasse tests satisfactory for use in the urinary examination for protein?…
A: The pH of urine varies from 5.5 to 7.5. If the diet is rich in proteins, sulfuric and phosphoric…
Q: how would you prepare 600 mL of a 20% strach solution beginning with a 50% stock starch solution?…
A: For calculation of stock solution, the formula used is M1V1 = M2V2 Where the M and V refer to the…
Q: Why do we need to place the lipid samples under direct heat after adding ethanol in a solubility…
A: The solubility test determines the presence of all lipids as a preliminary test.
Q: How does an emulsion work?
A: An emulsion is a mixture of two or more liquids that are normally immiscible owing to liquid-liquid…
Q: Why 70% Alcohol is better than 100% Alcohol (as an antiseptic) to control the growth of bacteria?
A: Sterilization is process of destroying all the viable microbes including viruses, endospores etc.…
Q: In excess of alkaloidal reagent, did the precipitate formed dissolve or not? What is the evidence…
A: Alkaloid reagents such as tannic acid, potassium iodide, potassium ferrocyanide, or mercuric iodide…
Q: If I had a standard with 2.0 mL of Bradford reagent then added 50μL of 250 μL/mL ; what would be the…
A: The Bradford protein assay is commonly used due to its sensitivity, speed, convenience, lack of a…
Q: You have been assigned to your first comatose patient, and you notice 0.12% chlorhexidine gluconate…
A: Introduction:- Patients who are admitted to hospital with a prolonged stay in hospital are at an…
Q: What will happen to the hard gelatin capsule if dissolved in water and vinegar for under 10 minutes,…
A: Hard gelatin capsules are made up of an animal based protein that is derived from collagen.plant…
Q: What concentration of ethanol is considered optimum for disinfectant? Why not 100%?
A: Disinfectant refers to the chemical agents that destroy or inactivate microorganisms on an inert…
Q: Calculate the boiling points of a 8.50 m aqueous solution of fructose. Boiling point constants can…
A: Formula for boiling point: ∆Tb=Kbmwhere,∆Tb= change in boiling pointkb= boiling point constantm=…
How to prepare %25 100 ml Glucose solution?
Step by step
Solved in 2 steps