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…
Why is there a need to use acids and boil the sample in maceration?
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- What is the importance of adding NSS and Iodine in stool specimen for smears? Compare the two.A test procedure calls for 5 mL of undiluted specimen. 2 mL of a 1:50 dilution is used. The answer obtained is 30 mg/dL. What answer should be reported?Why Purified synthetic alcohol is preferred for level vial?
- In sterilization, which among the supplies, instruments, glassware, etc. under the list of materials can be sterilized using either or both equipment below? List them down. For "autoclaving" For Dry heat oven Can be sterilized only sterilization with either Materials: 200-ml Erlenmeyer flask Stove 500-ml Erlenmeyer flask Autoclave 10-ml graduated cylinder Analytical balance 100-ml graduated cylinder pH meter Spatula Stirring rod 100-ml beaker Test tubes Distilled water Petri dish Stirring rod Alcohol lamp Glass dropperWhy should the specimen be albumin free when performing the chloride test for urine?Explain how to perform the following tests and how to interpret their results: Nitrate test