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

Q: How would you determine the contents of the test tubes if all of the samples were transparent?

A: The study of chemical reactions that occurs within living organisms is called biochemistry. This…

Q: Strong Iodine Solution USP Formula: Iodine pellets ____ Potassium iodide ____ Purified water ____…

A: Pharmacopeia has a collection of medicinal preparations, dosage forms, information about the purity…

Q: What is the most efficient disinfectant of the following ( Alcohol, chlorine, soap ,hijyn), and…

A: Disinfectants are chemical agents that are built on inert surfaces to inactivate or kill…

Q: Why is it necessary to flame the top of the bottle before pouring the plate?

A: Aseptic techniques are used to prevent contamination from pathogens. These are used in clinics and…

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: Unwashed hand Hand wet with alcoholfor 10sec. Handwashing using hand soap for 20 sec

A: Standard laboratory practices are followed to prevent exposure to bacterial cultures.

Q: Choose the combination of answers that most accurately completes the statement.Which of the…

A: Microbial growth is harmful as its presence causes several diseases in humans. Sterilants,…

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: Why would hydrogen peroxide be an effective disinfectant?

A: We have to answer why hydrogen peroxide can be an effective disinfectant.

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: Why are proteins and amino acids considered to be natural buffers?

A: Buffer is a solution that resists the pH change when an acid or base is added to it. pH is measured…

Q: How can polarography detect the analyte?

A: Jaroslav Heyrovsky discovered polarographic method   Polarography is a simple method in analytical…

Q: What are high level disinfectants? What is an example of one? What is the method of action and the…

A: Disinfectants are chemicals that are used to kill the microorganisms present in the surroundings.…

Q: Which of the following is an example of disinfection? a. Washing the resident's hands with soap and…

A: There are two processes to clean the surfaces- sterilization and disinfection. The sterilization…

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: Why is it necessary to know the accurate proportion in mixing bleach and water in cleaning and…

A: Bleach is a strong disinfectant.  It has a active ingredient sodium hypochlorite; an effective…

Q: What happened when potato strip placed in salt water?

A: 1) A solution mixture that exhibits a higher concentration of salt than the surrounding medium. Then…

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: What are the precautions that should be observed during the experiment for making soap

A: Soap is a fatty acid salt that is used in many cleaning and lubricating goods. Soaps are surfactants…

Q: What is the significance of reporting the color and consistency of a stool specimen? Explain…

A: One of the most crucial aspects of the treatment process is the diagnosis. They’ve ordered when…

Q: types of condensers are

A: The function of a Condenser in the microscope is to collect the light from light source and…

Q: What is electroporation technique?

A:

Q: What are the limitations in the use of potometer?

A: A potometer is also known as transpirometer. As the name suggests, the transpirometer is used to…

Q: What is the significance of reporting the color and consistency of a stool specimen

A: Stool is the undigested portion of food intaken.It consists of waste products that are eliminated…

Q: What is the purpose of adding sodium bicarbonate to a culture medium?

A: >> The purpose of adding sodium bicarbonate to animal culture medium is that it acts as a…

Q: What would be the effect of a urine sample being left at room temperature overnight before…

A: Urine testing may be requested by your general practitioner or another healthcare provider to assist…

Q: What purpose was served by filtering the milk sample after the addition of acid?

A: Milk is a white color liquid which is consists of various proteins and vitamins. Milk is an…

Q: What is the most commonly used fixative in stool samples and why?

A: Fixative is a moist environment for transporting and preserving intestinal parasites in stool…

Q: What special precautions must be taken when using the oil immersion (100x) objective?

A: Using oil immersion reduces the air gap between the glass slide and the objective lens. This air gap…

Q: How might a synthetic detergent be superior to a normal soap?

A: INTRODUCTION - Soaps are  sodium or potassium fatty acid salts made from hydrolysis of fats in…

Q: Why do we add powdered zinc to the nitrate reduction test?

A: Bacteria are prokaryotic simple unicellular organisms. Their mode of respiration may be aerobic or…

Q: SPECIAL METHOD OF WATER TREATMENT AT THE WATER-WIRED STATION 1. boiling 2. softening 3. ozonation 4.…

A: The specialized water treatment usually includes various types of methods such as physical method…

Q: What is the difference between an antiseptic and a disinfectant?

A: Antiseptic and disinfectants are used to kill germs, bacterias which attack from outer environment.…

Q: The most commonly employed chemical test to determine the presence of blood in stain found at the…

A: Answer is option E"Teichman's test". this test is also called by names haematin crystal acid test or…

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: Why must alcohol be diluted with water to about 70 % percent before it could be used as an effective…

A: 70% isopropyl alcohol is most commonly used as disinfectant and killing all surface microorganisms.…

Q: How much liquid media should you put in your dilution blank if you wanted to serially dilute a1 ml…

A: Serial dilution of the original sample containing microorganisms to achieve countable colonies on…

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: Which is better to use in washing clothes, soap or synthetic detergent? Explain

A: Detergents are the surfactants or the mixture of surfactants. Surfactants are the compounds that…

Q: What steps are required to verify both contact with the sterilant and sterilization of an instrument…

A: Sterilization is the process that eliminates, removes, kills or deactivates the microorganism such…

Q: Why acids and boiling are necessary in maceration?

A: Maceration refers to an extraction process that enables contact between a solvent and the plant for…

Q: What is the hazard of the spattering tendency in heating

A: Sterilization is the process of cleaning a substance by removing, killing or deactivating all forms…

Q: which kind of sample gives positive result for Molish test?

A: It is a chemical test which is named after the botanist Hans Molisch.  This test involves the…

Q: What are the immersion media that need to be used?

A: Immersion media is used to increase the numerical aperture of the microscope by a factor equal to…