Catalase test What is the reagent used in this test?

Q: The gelatin medium required inoculation with 3 loopfuls of culture. Why was so much organism…

A: Gelatin hydrolysis test is carried for detecting the ability of the bacteria to produce protease…

Q: Test Metabolic process indicated by a positive test. Citrate Indole Catalase Urease Methyl Red/…

A: Citrate test- are used to detect the use of citrate by an organism.  Indole- it differentiates the…

Q: Give the principle involved in the ninhydrin test. What is its purpose?

A: The principle involved in the ninhydrin test is that the two molecules of ninhydrin react with the…

Q: How is a protein free alkaloidal extract obtained for subsequent testing

A: Alkaloids are the class of naturally occurring compounds that are basic in nature. Alkaloids contain…

Q: How would you interpret this catalase test

A: Catalase is an enzyme which can convert hydrogen peroxide to oxygen and water and thereby decrease…

Q: Choline test procedure (chemical reagents added), positive results/observations, and positive for…

A: Choline is an essential nutrient for humans and animals. Choline occurs in the form of ions that…

Q: True or False Galactose gives a positive result with Benedict’s test faster than lactose due to the…

A: Carbohydrates, also known as sugars are the source of energy and one of the major macromolecules…

Q: Citrate test What critical enzyme allows the organism to acquire carbon from the  medium?

A: Citrate or citrate utilization test is one of the biochemical tests (IMViC tests) that are used for…

Q: What is the media used in Catalase test and its expected results?

A: Catalase is an enzyme that is found in the cell in most of the organism that protect the cell from…

Q: Methyl Red test What color is the ph indicator in the dropper bottle?

A: Methyl Red test is a quantitative biochemical test, which is widely used to detect the ability of…

Q: Positive with Molisch Test, but negative with both Iodine Test and Benedict's Test.       Glucose…

A: Carbohydrates are identified with different tests like Molisch, Iodine,Benedicts test.

Q: Smear Preparation 1. What are two goals of a good smear? 2. Why does a bacterial smear need to…

A: Smear preparation:  Spreading the culture on the slide and making a smear is the first step in the…

Q: amylasw test test for? medium+ - reagents   + Test/why?

A: Amylase is an enzyme produced by the salivary glands to digest carbohydrates. The amylase test is…

Q: Differentiate Widal from Weil-Felix test.

A: The Weil-Felix test detects typhus and specific rickettsial infections. Rickettsia is bacteria…

Q: COLOR REACTION OF PROTEINS Question Guide: 1. Write the positive result, the chemical group…

A: The test which are given are test performed on protein to check for specific chemical group or bond…

Q: what does it mean when bubbles shows during a catalase test

A: Bacteria are a group of prokaryotic microscopic single celled organisms. They live in diverse…

Q: 50 mg/50 ml kinetin stock is available  You need 2.5 mg/l kn for Ms media  calculate amount of kn is…

A: A culture medium is a liquid or semi-solid mixture of various nutrients that support microorganism…

Q: Principle, reagents and procedure of Mann's methyl blue eosin.

A: * Methyl blue eosin is a Polychromatic solution for staining in used in histology.  * It is mainly…

Q: Step-by-step smear preparation of Ziehl-Neelsen

A: The acid-fast bacteria have a lipoidal mycolic acid in the cell wall. Ziehl-Neelsen staining is a…

Q: Mucic Acid test Drawing of crystals Glucose Galactose Fructose Lactose

A: Polysaccharides are carbohydrates made up of monomeric unit monosaccharides. Each monosaccharide…

Q: Citrate test Explain what is the color of the medium after incubation? Green or blue

A: To correctly identify a microbial species, we make use of various biochemical assays that have…

Q: Given Test Reagent Positive or Negative Result Reason/Explanation Lime Soda Molisch Test…

A: Carbohydrates are widely distributed in plants and animals and they have important structural and…

Q: Assigned chemical agent: How does this agent specifically destroy microbial cells? Propose a…

A: There are few important points that should kept in mind : The bacteria treated with allows stain to…

Q: How else could you test for purity of the phycocyanin sample? Briefly outline the steps to be taken

A: C-phycocyanin is a promising naturally/pharmaceutical agent with more well-documented…

Q: Given Test Reagent Positive or Negative Result Reason/Explanation Galactose Nylander’s Test…

A: A qualitative test is used to measure the presence or absence of a substance. The qualitative…

Q: Test for Proteins Color of Positive Observations Result Biuret's test Ninhydrin test Specific Test…

A: Protein is a macronutrient that is essential to building muscle mass. Protein precipitation is…

Q: Eosin Y Test solution

A: Eosin Y- test is a test that is used to check sperm health. It helps to check the intactness of the…

Q: colored. Interpretation: () Lactose Observed that the addition of the Benedict reagent to the…

A: Carbohydrates or carbs are macronutrients consisting of Carbon, hydrogen, and oxygen atoms. In…

Q: Methyl Red test What color is the medium prior to addition of the pH indicator?

A: Methyl red test is one of the biochemical tests, carried out on bacteria. This test is performed to…

Q: Multiple Matching. For each type of medium, select all descriptions that fit. For media that fit…

A: A culture medium is a solid, liquid or semi-solid, designed to support the growth of microorganisms.…

Q: In lactose fermentation test what does V means?  Please help

A: In the microbiology lab to identify any organism of the coliform group, there will be a test which…

Q: Composition (+) of reagents Test Importance of the test Group Result Responsible

A: Proteins are macromolecules formed by amino acids; they are essentially polymers of structural units…

Q: Voges Proskauer test Is it positive or negative for fermentation of glucose to 2,3 butanediol?

A: It is required to determine if Voges Proskauer test is positive or negative for fermentation of…

Q: Explain main difference would you see when conducting  the nitrous acid test with aniline vs.…

A: Nitrous acid test with aniline will give stable diazonium salt as aniline is primary aromatic amine.

Q: Step-by-step smear preparation of Kinyoun Method

A: Kinyoun, is a process used to stain acid-fast species of the bacterial genus Mycobacterium. it is a…

Q: Citrate test What will happen to the organism if it can't use the carbon source provided?

A: Citrate or citrate utilization test is one of the biochemical tests (IMViC tests) that are used for…

Q: ESR

A: ESR testing or erythrocyte sedimentation rate checks how fast the red blood cells in a blood sample…

Q: Plating 0.1 mL of a sample diluted by a factor of 10^(-3) produced 43 colonies. What was the…

A: The question asks the original concentration (OCD) is to be identified in an undiluted…

Q: Methyl red test does the color of the medium change to red when methyl red was added? Is it positive…

A: Biochemical method of bacterial identification is a classical method that is used for the…

Q: Bradford Assay: Coomassie Blue G-250, phosphoric acid: A. Biuret Protein Assay: sodium potassium…

A: Bradford assay is a test used to quantify proteins in a sample. It uses an acidified solution of…

Q: Citrate test What color indicates a rise in pH from the production of alkaline or basic products?

A: Citrate or citrate utilization test is one of the biochemical tests (IMViC tests) that are used for…

Q: If testing had come back as oxidase negative, urease positive and growth on MacConkey agar, what…

A: MacConkey agar is a selective and differential culture medium used for the isolation and…

Q: Citrate test what is the color of the medium after incubation? Green or blue

A: Citrate or citrate utilization test is one of the biochemical tests (IMViC tests) that are used for…

Q: Why should be avoided boiling more than 5 minutes in Barfoid test?

A: Barfoed test is carried out to detect the presence of monosaccharides in the sample. This test also…

Q: purpose of the Methyl Red and Voges-Proskauer Test. What makes each one unique and why?

A: The methyl red reagent is a solution that detects the acidic pH of the culture. Voges-proskauer test…

Q: Describe Ninhydrin test for proteins with the reaction

A: Qualitative tests help to detect the presence of substances by giving visible reactions such as…

Q: Citrate test What is the only souce of carbon in this medium?

A: Biochemical method of bacterial identification is a classical method that is used for the…

Q: Citrate test What pH idicateor is in this medium?

A: It is required to identify the pH indicator in citrate test.

Q: Indole test   what the result shows, what the result means, thank you!

A: Test for indole is routinely performed in a microbiology lab. The test helps in the identification…

Q: Why glucose (monosaccharide) and maltose (disaccharide) give positive Benedict test

A: The Benedict’s reagent is composed of copper sulfate, sodium citrate, sodium carbonate and distilled…

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Substance abuse refers to the use of illegal drugs in excessive quantities, as well as the misuse of legal substances such as prescription or over-the-counter pharmaceuticals or alcohol for purposes other than those intended. Drug addiction, also known as substance use disorder, is a disease that affects the brain and behavior of a person. It leads to a failure to control the use of any drug or prescription, legal or illegal.