Step 2: Protein Test (Biuret Solution) Mystery Food Sample Water Gelatin (Positive Control) Pink/Purple (Negative Control) Not change Not changed Color The mystery food sample does not contain protein because the color of the test tube Conclusion Was not pink/purple. Step 3: Lipid Test (Sudan Red Solution) Vegetable Oil (Positive Control) Water (Negative Control) Not change Mystery Food Sample Floating red Floating red Color The mystery food substance does not contain lipids because the test tube has a Conclusion floating red. Step 4: Polysaccharide Test (Lugol's Solution) Mystery Food Sample Water Polysaccharide Mixture (Positive Control) Blue/Black (Negative Control) Not blue/black Not blue/black Color The mystery food sample does not contain polysaccharide because the color of the test Conclusion tube was not blue/black

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

A: The solubility of a protein depends on the proportion & distribution of the polar hydrophobic/…

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

A: Sulfur, Indole, and Motility (SIM) Media It assesses an organism's ability to do many things,…

Q: Why is skin contamination such a big problem in blood culture test?

A: Contamination can arise during the preparation of the venipuncture or catheter insertion site, the…

Q: How would you draw out a step in an experiment that included the following? Please help, I am so…

A: Horizontal gene transfer (HGT) is largely responsible worldwide for increasing the incidence of…

Q: transferred to the plate. After 24 hours there were 60 colonies on the plate. What is the dilution…

A: b. The dilution factor is 1000. The patient sample contains 600,000 cells/ml

Q: Assuming that these are the 12 microplates. What is wrong with the result of the test? What do you…

A: There are few important points : ELISA : Enzyme linked immuno sorbent assay is used in diagnosing…

Q: Tables Table 1: Time Required for Methylene Blue Color Change Milk Sample Start Time/Date (Step…

A: Methylene blue Is the blue color dye used to check the presence of bacteria in raw and pasteurized…

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: Figure 1. Cytotoxicity test on 96 well plates that was monitored by ELISA reader 3- Discussion 1-…

A: The degree to which a substance can harm a cell is referred to as its cytotoxicity. Cytotoxic refers…

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: what is and how do you preform a MR test aka Methyl red test

A: Answer- MR test is the biochemical qualitative test used to determine the mixed acid ( Acetic acid,…

Q: If the test samples are positive for the antigen in the ELISA we are using, what color will you see?…

A: ELISA:                     ELISA ~ Enzyme-Linked Immunosorbent Assay          In analytical…

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: Calculate the viral titer of an experiment performed yielding a pfu of 279 from plating 1.0 ml of…

A: Virus titre calculation is a complicated way that a scientist is counting the “number of viruses”…

Q: If you are working in a lab and a patient enters with suspected malaria what would you do next? What…

A: Malaria is a disease caused by the parasites of Plasmodium species. It transported through vectors…

Q: The color of the positive result for Iodine Test.*   A. Pinkish B. Orange-Brown C. Blue-Black D.…

A: Iodine test is performed to detect the presence of starch in a solution. When iodine is added to a…

Q: Which is true about Heat and Acetic Acid test? Protein is normally found in the blood and if there…

A: Often various tests are conducted to diagnose any undesirability in a person. These start from…

Q: The best medium for using antibiotic susceptibility testing is _________________, the reason why…

A: Antibiotic susceptibility test is basically used to measure the ability of an antimicrobial agent or…

Q: What is the color result of 1% soultion of casein,albumin ang gelatin in biuret test? Results and…

A: Biuret test detects proteins and peptide having at least two peptide bond. It is used as a general…

Q: A bacterial culture was grown for 12 hours. At 4-hour interval, the culture was sampled to determine…

A: To keep the number of colonies on the plate within a certain range, serial dilutions of culture are…

Q: MICE strip test.  what the result shows, what the result means, your confidence in each result,…

A: Minimum Inhibitory Concentration (MIC) is used to interpret the concentration of a drug needed for…

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

A: Rheumatoid factor: Rheumatoid factors are antibodies with specificity for antigen determinants on…

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: What is an antigen?  What is an antibody? Why does each test include a control line?

A: Since you have posted a question with multiple sub-parts, we will solve the first three subparts for…

Q: Which of the following are sterile and which are not: benchtop test-tube rack hands and fingers  air…

A: Sterile means any object which is free from bacteria or other micro-organisms and is totally clean.…

Q: Which of the following describes the proper order for a competitive ELISA? OA frst coat wels with…

A: ELISA (enzyme-linked immunosorbent assay) is an immunoassay used to identify the presence of…

Q: A 5mL sample diluted 1:1 with trypan blue is counted using a hemocytometer. A total of 325 viable…

A: The hemocytometer is a counting chamber device originally designed and usually used for counting…

Q: Thank you, 3

A: Ans : CFU/ml = 1.25 * 106  Given : * Dilution factor = 1/1000 or 10-3 * Sample plated = 0.1ml *…

Q: Which of the following best describes a positive reaction in an ELISA?   A color change takes place.…

A: Serological tests are used to identify the antigen and antibody in the patient’s serum. It helps to…

Q: You perform an ELISA to test hospital soap samples for contamination with Pseudomonas aeruginosa.…

A: ELISA or enzyme-linked immunosorbent assay is a Molecular Biology technique used to detect and…

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: 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: B. Use the following table to answer the questions related to the Biuret protein test (5 - 7): Tube…

A: WE are answering 5 to 7 questions of section B. For rest of questions pls repost.   Proteins are the…

Q: what type of T-test is used if we want to correlate total length and weight, categorized based on…

A: For one group, a paired t-test is used to compare the group mean over time or after an intervention,…

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: 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: If, when using 10X ocular and a 20X objective, the field size is 2 mm. The approximate field size…

A: Ocular magnification - This is the magnification that can be viewed by the ocular lenses, the lenses…

Q: L sample diluted 1:1 with trypan blue is counted using a hemocytometer. A total of 325 viable cells…

A: The hemocytometer is a counting chamber device that was originally created to count blood cells and…

Q: Below is a picture of ELISA results. Why is the color darker in some wells and lighter in others?…

A: Biochemical tests are those that are used for the detection of different bacterial species based on…

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

A: The latex agglutination test is used for the detection of the latex particles coated with…

Q: After centrifugation, the serum had a noticeable red/pink hue. 1. What is the appropriate next…

A: Red blood cells are the oxygen-delivering cells in the circulation. Serum and plasma also form the…

Q: While conducting the Hydrogen Sulfide Test you open up one of the tubes and it gives off a rotten…

A: Few of the microorganisms have the ability to reduce sulfur (Sulphur) containing compounds to…

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 is ASTO or ASO test? discuss the principle it's important

A: ASTO/ ASO test is Anti- streptolysin O test.  Antistreptolysin O is an antibody produced in human…

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: NEGATIVE: Two lines appear. One colored line should be in the control region (C), and another…

A: Test Strips --  Introduction --In modern days for immediate qualitative and quantitative purposes…

Q: Which test tube is the control group?   Test tube 1: 5 Hydrogen peroxide only Test tube 2: 5…

A: The scientific method involves understanding and solving the phenomena in the universe. The…

Q: Would any of the above give a positive Lieberman-Burchard test? Explain your answer.

A: The endocrine system is a vital biological system that produces various hormones. These hormones…