What is the purpose of Biuret’s test? In biuret’s test, does the color in each test tube containing the sample vary? Why or why not?

Q: Methyl red test Does a Phenol red organism have to be methyl red?

A: It is required to find if the Phenol Red organisms are also Methyl Red in the indicator tests.

Q: Which is the commonly occurring sugar in milk? Will the milk containing this sugar gives a positive…

A: The nutrient-rich drink, which is produced with the help of mammary glands in mammals, is called…

Q: What is the role of H2SO4 in Hopkins cole test?

A: The Hopkin's Cole test, sometimes known as the 'glyoxylic acid test,' is a method for detecting the…

Q: which of the following are necessary to run a valid elisa test?

A: An enzyme-linked ikmunosorbent assay,also called ELISA is a test that detects and measures…

Q: All of the following about the chi-square test are true, except:

A: A chi-square test is a statistical test that indicates whether given variables are independent or…

Q: White blod cell concentration in normal blood is approx 12,000 cells/mm^3. How many white blood…

A: Blood is a composition of blood corpuscles and plasma.Plasma is the fluid part of blood while…

Q: What is the chemical basis of the Xanthoproteic Test? Give the chemical reaction involved.

A: Protein is a nitrogenous organic macromolecule that is essential to human health. It is responsible…

Q: What is the difference between Benedict and Barfoid's test?

A: Both Barfoeds and Benedict’s solution are made from same ingredients. But their capabilities are…

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: What specimen would be collected for an antigen test? Why is it important to not touch the tip of…

A: Coronavirus disease (COVID-19) is a recently found coronavirus that causes an infectious disease.

Q: Do zwitterions interfere with the different color reaction tests?

A: A molecule with a charge of zero and at least two functional groups, one positive and the other…

Q: What other test(s) are used in parallel to Benedict’s test?

A: Reducing sugar: a. Carbohydrates that contain free aldehyde or ketone group and are in hemiacetal or…

Q: What is a Goldbeater’s test? What is the principle involved?

A: Tannins are complex, nitrogen-free polyphenols found in plant tissues. Plants produce tannins to…

Q: What is the use of heat in Seliwanoff’s, Benedict’s and Barfoed’s tests?

A: The Seliwanhoff's, Benedicts's, and Barfoed's tests can qualitatively identify and distinguish among…

Q: What is the action of dexamethasone in the suppression test?

A: The disease is a state which is deviated from the normal condition. A disease can be caused by the…

Q: What is alkaline reversion? Explain why this condition gives a false negative result

A: The microbes that affect the intestine of an individual are referred to as enteric pathogens. The…

Q: What is Ames test ?

A: Ames Test : It was devised by a scientist 'Bruce Ames ' .  It is also known as Salmonella…

Q: What is the principle involved in the Acrolein test? What is its purpose?

A: Qualitative tests are the chemical or physical tests involved in identification of certain…

Q: Is there any difference between the effects of dipping versus swabbing?Which method appears to be…

A: Bacteria are very small. They cannot be observed with the naked eye. Every surface like a plant,…

Q: Describe the biuret test. What does the Biuret test detect?

A: There are different types of biomolecules. The biomolecules greatly differ in their physical and…

Q: what are the important principle in invertase test?

A: To determine enzymatic activity, the amount of substrate remaining or the amount of product created…

Q: Why is plate count more sensitive than a microscopic count?

A: Microorganisms such as bacteria are cultured artificially in laboratories, in order to study their…

Q: During the denaturation of egg white using Heat, Salt, Baking soda, Lemon juice, and Alcohol, what…

A: when denaturaton of egg white is done using any of these (Heat, salt, baking soda, lemon juice or…

Q: What is the difference between a Hemin test and a Benzidine test?

A: Hemoglobin is a blood protein that is responsible for oxygen transport in the tissues. Hemoglobin…

Q: Discuss the significance of the following processes and what constituent is being determined: a.…

A: Borntrager’s Test: This is a quantitative chemical test for the glycosides in any given sample, this…

Q: What is Huble's Test's primary goal? How does it compare to the Unsaturation Test and how does it…

A: Introduction Lipids are a type of substance that is naturally oily or greasy. They are made up of…

Q: What is the importance of performing the Modified Allen Test? Give at least three.

A: Modified Allen test: This test is done to assess the integrity of the ulnar artery, To perform this…

Q: What color tube is used for creatinine test?

A: Introduction:-  Creatinine test is done to assess the situation of the kidney. Creatinine values…

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: For a simple routine qualitative analysis, why is an early morning sample of urine used for the…

A: Qualitative analysis is one of the effective way to diagnose various diseases. The sample for…

Q: Why is a 1:20 dilution of patient serum, rather than undiluted patient serum, used for the…

A: In the laboratory blood samples are used to detect various disease conditions. There are different…

Q: (a) Will phenylalanine test positive or negative in the biuret test? Why? (b) What color do you…

A: Biuret test can be used to detect presence of proteins and peptides. Cupric ions present in copper…

Q: Would lactose + lactase be positive or negative for the Iodine test?

A: Lactose is a disaccharide that is commonly found in milk. Lactose is also known as milk sugar.…

Q: What do you call the clear areas? What is the white disk? The test is called? How do you know if the…

A: Antibiotics are chemicals generated from one bacteria that are used to destroy another…

Q: Based on these blood agar results, can you identify what type of hemolysis are occurring in these…

A: Hemolysis is the destruction of red blood cells. It can occur due to different causes and leads to…

Q: In Beadle  and Tatum experiments the immediate effect of the X-ray treatment was

A: The Beadle and Tatum experiment provided evidence that the genes are involved in the formation of…

Q: Which of the following is true about the characteristics of a screening test?

A: Several tests are conducted for identification, conformation, treatment, etc. These test helps to…

Q: What is similar about this test and the TSIA test?

A: SIM medium is used to check different parameters such as Sulphur Reduction, Indole Production,…

Q: Which is better? A test with high sensitivity or a test with high specificity?

A: Tests can be differentiate from each other based on the differentiating evaluating factors.  The…

Q: What is Hemin test and Benzidine test?

A: Hemin test - Hemin can be produced from haemoglobin by the so-called Teichmann test, when…

Q: The Duquenois-Levine test is a valuable color test for

A: We can say that, In a forensic chemical analysis of an unknown material, the analytical method is to…

Q: What is function of ''quinoline molybdophosphoric acid'' in the Phosphate Gravimetric Quimociac…

A: Gravimetric Analysis: It is a technique by which an analyte amount can easily be determined through…

Q: Which sample shows positive results in benedict's test? why?

A: Introduction: Benedict's test is a simple science test used to recognize reducing sugars.

Q: The Duquenois–Levine test is a valuable color test for___________.

A: In a forensic chemical analysis of an unknown material, the analytical method is to narrow down the…

Q: what are the two important phases in chromotography?

A: Chromatography is a method of separation in which the components of a mixture are separated due to…

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…