Which test tube is the control group?   Test tube 1: 5 Hydrogen peroxide only Test tube 2: 5 Hydrogen peroxide and ground potato Test tube 3: 5 Hydrogen peroxide and diced potato Test tube 4: 5 Hydrogen peroxide And boiled potato

Q: Why is the Widal Test performed? What disease does it indicate? Is the Widal test reliable?…

A: 1) Widal is the presumptive serological test for the diagnosis of enteric fever ,typhoid. ▪︎ It is a…

Q: . What is meant by a bacterial “colony” or colony-forming unit? 2. Why are colonies that develop on…

A: Since you've asked multiple questions, we're only answering the first three answers for you. If you…

Q: List and explain the Sterile Technique What's the difference between Medical vs. Surgical Asepsis?…

A: Aseptic technique or Sterile technique means using practices and procedures to prevent contamination…

Q: 18. The total number of cells in a culture is counted using the trypan blue exclusion assay and is…

A: Number of Cells/ml = 2.7 x 106  Dilution ratio = 1:27  Now, Number of cells/ml after dilution =…

Q: What method is best for for isolating a colony on a TSA plate? A. Swab plate B. Straight line…

A: An isolated colony represents a pure source of an organism from which a pure culture can be started.

Q: explain how the following genotypic and phenotypic methods of microbe identification is done. Use…

A: The biochemical tests are the tests that are used to identify various types of microbial species.…

Q: explain briefly how the Bile Esculin Test works. How is a positive test attained? What does the…

A: Bile-Esculin test is a microbiological test to identify the enterococci and streptococci species…

Q: Based on this video: https://youtu.be/3PYdMaClUmw    Observation Interpretation Test Tube…

A: Chemical reactions in living cells are catalyzed by enzymes.

Q: Mention any three (3) fluids used in cleaning lenses in the microbiological lab

A: Microscopes have to be well maintained in order to have a longer life for the instrument. Objective,…

Q: Use the figure above to answer the following question(s). Although not shown in the figure above,…

A: in this process a sample is taken and is diluted through a series of the standard volume of a…

Q: can you please explain how to interpret the results Of this. First one is negative blood agar test…

A: Blood agar is one of the differential media supports the growth of certain fastidious bacteria that…

Q: Ehat is the patient disease? If there is. Symptoms are morning fever and clogged nose. Attached the…

A: According to symptoms and lab investigation it's sinusitis condition ( A condition in which the…

Q: n a culture tube labeled X as your unknown. Outline the 7 steps that will enable you to determine…

A: Being able to differentiate microorganism species is very important for a number of reasons, from…

Q: Please insert a photo of your cross-streaking for individual colonies and describe your results)…

A: The advantage of using solid media has been increased by describing the colony morphology, including…

Q: If the 1-mL sample had been added to 99 mL of diluent to make the first dilution (instead of 9 mL),…

A: Introduction Cytometry is referred to the study of the measurement of the characteristic of the cell…

Q: TRUE or FALSE only! 1. Pure cultures contain only a single species and no other organisms. 2. Pour…

A: 1. True 2. True

Q: You counted 40 colonies on a plate in your dilution series. The plate was inoculated with 1.0ml from…

A: A microbial sample will have enormous amount of cells. To estimate this by calculation, the sample…

Q: Which of the following tests involve antibiotics? Choose all that apply OBacitracin ODNase…

A: Antibiotic susceptibility/ sensitivity test is test which is used to determine which antibiotic is…

Q: PREPARATION OF SMEARS: 1. Wash the slide thoroughly with a detergent, rinse with water and dry with…

A: PREPARATION OF SMEAR ( FLOWCHART)

Q: Cause and Effect Analysis describe the effect on the test procedure and explain briefly The zones…

A: Determination of bacterial resistance to antimicrobials is an important part of the management of…

Q: 1. Give 2 systems used at present for the automatic identification of bacteria. 2. Why aseptic…

A: Two methods widely used for bacterial identification in the laboratories are: Chemical assays  PCR…

Q: 9. Complete the table by transcribing the following culture media, classify as to…

A: Introduction :  A growth medium, also known as a culture medium, is a solid, liquid, or semi-solid…

Q: List the different reagent strip tests with their principle 2. Enumerate 5 clinical significance…

A: DIFFERENT REAGENT STRIP TEST:- 1.Urobilinogen 2.Bilirubin 3.Ketone 4.Blood 5.Protein 6.Nitrite…

Q: Match the confirmation test to the category of bacteria. (each category can be used multiple times)…

A: Gram-positive bacteria are bacteria that test positive in the Gram stain test, which has…

Q: What is the color result of tryptophan,tyrosine and phenylalanine in xanthoproteic test? Results and…

A: Xanthoproteic test was a specific test that was done to detect the presence of aromatic amino acids…

Q: Based on this data, complete the table below: Plate # Dilution in Test Tube Inoculum Volume Titer…

A: Here the stock solution is an unknown concentration and the plague plates are developed in only 3…

Q: Please answer fast What is this organism? And what other test could be done to confirm it's…

A: Gram staining is a method of staining that is used for the classification of bacterial species into…

Q: How many cells were put in the tube?

A:

Q: How do you know if you have a ‘countable’ plate when doing a dilution series?   Two plates…

A: The concentration of stock solution can be calculated by first diluting the stock into a suitable…

Q: 1. Draw and describe the possible result that may be observed on an agar plate that utilized a 4-…

A: Isolation of microbes refers to an separation of particular strain from the mixed population from…

Q: What test best matches the image below? O Novobiocin O ELISA O DNA hydrolysis O MSA

A: DNA hydrolysis test or DNase test is commonly performed test to check the ability of the organism to…

Q: Capsule presence aids in efficient transport of nutrients for bacteria   Group of answer choices…

A: The capsule is a thick viscous layer which is about 0.2µm that is present in the cell wall of some…

Q: How is it that mold appeared on my samples? (in other words where did it come from or what is the…

A: Mold is a fungus that grows in the form of hyphae which are multicellular filaments. The spores of…

Q: Diagram illustrating Miles & Misra technique for determining viable counts: 10ul 10-5 106 104 10-7…

A: Miles and Misra technique in microbiology helps us to calculate the number of surface viable cells…

Q: Place 3 mL of egg albumin solution in each of the two test tubes. To one test tubes add 5 drops of…

A: Proteins contain a polar hydrophilic and a non-polar hydrophobic group in their structure. This…

Q: A strep culture is sampled at two points in time, 1 hour and 10 minutes apart. 3.2 x 105 cells/ml…

A:

Q: Draw the steps of Qualitative Test in LATEX AGGLUTINATION TEST FOR THE DETECTION OF RHEUMATOID…

A: it is the gold standard test for the diagnosis of rheumatoid factor in serum the steps of this are…

Q: 2- Experimental Procedure 1- Plate cells into 96-well tissue culture plates. In general, 5000-10,000…

A:

Q: How can I explain the results of my findings in lamen terms?

A: These test are the perfomed to identify positive and negative result for glucose fermentation.

Q: Refer to the following diagram: 100 ul 100 μL 100μι 10 μι 10 μι 100 μι 100 μL Volume to transfer 900…

A: Colony forming unit is used to determine the concentration of the  microorganism in the test sample.…

Q: What was the concentration of bacteria (CFU/mL) in the original suspensions used for dilutions and…

A: The ideal colony size is found between 30 and 300. The CFU/ml is calculated by: (Colony × Dilution…

Q: Describe results from a coagulase, DNase, and novobiocin test that would suggest a mixed culture was…

A: Staphylococci are Gram-positive spherical bacteria that occur in the form of grape-like clusters.…

Q: Please answer fast Dilution Problem. A culture of Staphylococcus is diluted as follows: (1) 20mL…

A: CFUs are a measure of the number of progenitors present in a given population of cells; if an…

Q: Look for two product of Milk in the internet and answer the following queston: 1. Method of…

A: Two milk products are chosen for the current study namely cheese and butter

Q: While conducting the Hydrogen Sulfide Test (SIM Agar) you open up one of the tubes and it gives off…

A: Hardy Diagnostics is a company that specialises in medical diagnosis. SIM Medium is recommended for…

Q: Name 3 gram negative and 3 antibiotics preferred against gram negative bacteria? Please answer at…

A: Gram-negative bacteria, such as Escherichia coli, Proteus, Klebsiella, and Entero bacter, are the…

Q: A microbiologist sets up a serial dilution to analyze bacteria in raw milk.   Tube 1 – 0.1 mL milk…

A: Dilution is a phenomenon in which final solution are prepared having concentration comparatively…

Q: In product testing, no colonies appeared. Interpretation: Rationale:

A: Ans: Product testing: The product testing is performed as a regular quality control protocol in…