Why sucrose gives negative Benedict test?
Q: Which of the different carbohydrate tests would give a positive result for maltose? Describe the…
A: Carbohydrates tests are chemical tests performed to detect the presence of carbohydrates. They can…
Q: TUBE NO. 1. 3 ml of RESULT and OBSERVATION TREATMENT | 2 mL of NAOH solution egg albumin solution…
A: Proteins are macromolecules that are made up of Amino acids joined by peptide bonds. Linear chain of…
Q: Observation Test for Starch Isolation of Glycogen Test for Polysaccharides Benedicts's Test:…
A: Energy is stored as the glycogen in the liver and muscles. Glycogen is split into glucose when…
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: Why is the mucic acid test specific for the presence of galactose?
A: Galactose is a monosaccharide with the structure shown below: It is a component of disaccharide,…
Q: If my saliva tested positive for starch. How would that affect the interpretation of the results for…
A: Saliva Saliva is the gland located in the mouth which secret salivary amylase in the mouth.…
Q: Kovac's reagent is added to detect indole. True or False?
A: True
Q: What would be the expected out come of a phenol red test If the bacteria is a pathogenic intestinal…
A: Phenol Red Broth is a general-purpose differential test medium typically used to differentiate…
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: Why should the use of nichrome or iron containing loop/wire be avoided as an inoculating device when…
A: The oxidase is a test used in microbiology to identify bacteria that produce cytochrome c oxidase.…
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: 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: 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: 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: 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: Why is picric and tannic acids used in treating burns and diarrhea?
A: Picric acid is a potent explosive that is a derivative of phenol. Picric acid is a chemical compound…
Q: We will use liquid oxidase reagent for the oxidase test. What color will the colonies turn if they…
A: Oxidase test is used to determine the presence of cytochrome c by a bacterium. This test belongs to…
Q: What effect does the H2O2 have on bacteia in the catalase test?
A: The production of toxic substances like hydrogen peroxide due to metabolic activities can be lethal…
Q: Differentiate Widal from Weil-Felix test.
A: The Weil-Felix test detects typhus and specific rickettsial infections. Rickettsia is bacteria…
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: 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: Egg white solution when mixed with boiled pancreatic extract will be (+) or (-) in both Biuret and…
A: Biurete test: A Biuret test is a chemical test used to determine the presence of a peptide bond and…
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: hich of the different carbohydrate test would give a positive result for maltose? Describe the color…
A: Carbohydrates are the macromolecules that consist of carbon, hydrogen, and oxygen in the molecular…
Q: a. Albumen Biuret Test - Purple color - O b. Sucrose - Benedict's Test- No orange precipitate Starch…
A: To detect the presence of certain biomolecules like proteins, carbohydrates, fats, etc. biochemists…
Q: does ribose-5-phosphate pass fehlings test?
A: Fehling's test is one of the sensitive test for detection of reducing sugars. Fehling's solution is…
Q: can the phenol red test also be used to determine if a certain bacterium can metabolze various…
A: Differential media is a type of growth media used in the labs to grow and differentiate or…
Q: Group of lipids identified in Acrolein Test
A: Principle of Acrolein test: Lipids containing glycerol are treated strongly in the presence of a…
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: Why does the oxidase test must be performed from blood agar or another medium without a fermentable…
A: Biochemical tests are used to identify microbial diversity based on variations in the biochemical…
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: Positive or Given Test Reagent Result Reason/Explanation Negative Lime Soda Molisch Test Sucrose…
A: Qualitative tests are used in the laboratories to test the presence or absence of a substance in a…
Q: After how minutes the color is obtained with each carbohydrate in Resorcinol test?
A: this a test for carbohydrates.
Q: Does fructose can produce a positive result in Seliwanoff Test? Elaborate your answer
A: Seliwanoff’s test is a test for carbohydrates that can distinguish between aldose and ketose sugars.…
Q: Can galactric acid test/mucic acid test be used to determine the presence of milk in milk-chocolate…
A: A nutrient-rich white fluid secreted by the mammary glands of the mammals is referred to as milk.…
Q: Actual resut or product Name of test Test compound Reagents used Formaidehyde Benzaidehyde Tollen's…
A: The chemical group that consists of a carbonyl-carbon atom and a carbonyl-oxygen atom that are…
Q: What are the purpose of the sample containing albumin, glucose/fructose and boiled starxh solution…
A: A chemical reaction is a process that converts one or more substances into another substance.…
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: This test will differentiate between aromatic amino acids with an acitivated ring from other amino…
A: We'll answer the first question since the exact one wasn't specified.please submit a new question…
Q: ESR
A: ESR testing or erythrocyte sedimentation rate checks how fast the red blood cells in a blood sample…
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 color will cellulose turn for iodine test?
A: Cellulose is an important component of cell wall of plants. It is a Polysaccharide made up of beta D…
Q: what are the Amino Acids that test positive for Ninhydrin test? what is the principle of detection?
A: All the alpha amino acids test positive for ninhydrin test.
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: A carbohydrate sample reacts positively with all test reagents except for Lugol's. The sample could…
A: Carbohydrates: a. It is the most abundant organic compound present in nature and consists of only…
Q: Is there a possibility for lactose to give a positive Mucic Acid test? Explain.
A: Monosaccharides upon treating with oxidizing agents here, nitric acid yield dicarboxylic acids by…
Q: Catalase test What is the reagent used in this test?
A: It is required to identify the reagents that are used in the Catalase test.
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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Solved in 2 steps
- Why glucose (monosaccharide) and maltose (disaccharide) give positive Benedict test?Will disaccharides and polysaccharides give a positive result for Molisch test?Will disaccharides and polysaccharides give a positive result for Molisch test? Which of the different carbohydrate tests would give a positive result for maltose? Describe the color change.
- Positive with Molisch Test, but negative with both Iodine Test and Benedict's Test. Glucose Fructose Ribose/Arabinose Maltose SucroseWill disaccharides and polysaccharides give positive results in Molisch test? How?An IV bag contains 250 mL of a 5% mannitol solution. How many grams of mannitol are in the IV bag?