Glucose Oxidase – Triglyceride – Total cholesterol - HIgh density lipid – 5. What are some limitations associated with each of the above tests.
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Glucose Oxidase –
Triglyceride –
Total cholesterol -
HIgh density lipid –
5. What are some limitations associated with each of the above tests.
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- 1. Which of the following statements best explains the positive result of the acid hydrolysate of sucrose for benedict's test?* The acid hydrolysate of sucrose contains glucose only The acid hydrolysate of sucrose contains fructose only Both glucose and fructose are present in the acid hydrolysate of sucrose Neither glucose nor fructose is present in the acid hydrolysate of sucrose 2. Which of the following intermolecular molecular forces of attraction is disrupted when a native protein is added with acetic acid?* Hydrogen bond Peptide bond Disulfide bond Salt bridge van der Waals forceWhat is the major biochemical function of each of the following proteins? α-Keratin _____________________________________ Collagen _____________________________________ Hemoglobin _____________________________________ Myoglobin _____________________________________Resorcinol (Seliwanoff's) Test for Ketohexoses Glucose- Arabinose- Fructose- Bial's-Orcinol Test Glucose- Maltose- Barfoed's Test Glucose- Osazone Drawing of crystals Formation Glucose Mannose Fructose Lactose Maltose QUESTION GUIDE 1. Why do glucose and fructose form the same osazone crystak? 2. Differentiate benedicts from Fehling's test based on the medium used. Which is a more sensitive teu? Why test? 3. Differentiate benedicts from Barfoed's test based on the medium used. 6/7 4. How important is time in the characterization of sugar in the Barfoed's test? 5. Why do we have to koep Fehling's A separate with Fehling's B? :::
- Only do the following- synthesize a monoglyceride and diglycerides and attach them below. Make sure to identify which is which!The reults for the macroscopic part: 0.30M glycerin – solution was translucent (could see text behind the test tube) 0.15M NaCl – solution was opaque (could not see text behind the test tube) 0.30M NaCl – solution was opaque (could not see text behind the test tube) 0.15M glucose – solution was translucent (could see text behind the test tube) 0.30M glucose – solution was opaque (could not see text behind the test tube) 0.30M Urea – solution was translucent (could see text behind the test tube) Results for microscopic part: 0.30M glycerin – no cells present 0.15M NaCl – normal sized cells 0.30M NaCl – crenated (shrunken and star-shaped) cells 0.15M glucose – no cells present 0.30M glucose – normal sized cells 0.30M Urea – no cells present Determine the osmolarity (hypoosmotic, isosmotic, or hyperosmotic) and tonicity (hypotonic, isotonic, hypertonic) of the following solutions.In which solutions did the osmolarity NOT match the tonicity? For those solutions, why did the osmolarity…- Lactose is a sugar found in milk and other dairy products. Explain how it is broken down in most individuals. Explain lactose “intolerance” - Explain, with the use of a diagram how soap molecules work to clean “dirt” particles.
- Test 3. You are given testing results for the following nutritional drinks. What do you conclude about their contents? Reference the last lab for carbohydrate results. Unknown drink #1 lodine yellow Unknown drink #2 dark Benedicts Sudan blue green Unknown drink #3 yellow red ro no reaction 5% of tube red no reaction Biuret purple No reaction membrane purple Conclusion - What information do these results tell you about this drink? 14QUESTION 3 An unknown protein was determined using the following method: Bradford method Reagents Stock Bradford reagent: Dissolve 100 mg Coomassie Brilliant Blue G250 in a mixture consisting of 100ml of 85% phosphoric acid, 50ml of 95% ethanol and 50ml 1M NaOH. Store at 4°C until precipitation occurs, at which point it is discarded. Working Bradford reagent: Prepare fresh by diluting 10ml of stock Bradford reagent to 250ml with distilled water. Stock bovine serum albumin (BSA) solution (10mg/ml): Dissolve 0.2g BSA in 20ml distilled water. Working BSA concentration range: 0.5 – 1.25 mg/ml Method 1. Prepare the following test tubes: Table 1: Preparation of test tubes for the Bradford method Blank Tube 1 Tube 2 Tube 3 Tube 4 Tube 5 Unknown Distilled H20 1.0 ml 0.9ml 0.9ml 0.9ml 0.9ml 0.9ml 0.8ml 0.25 mg/ml BSA 0.1 ml 0.5 mg/ml BSA 0.1 ml 0.75 mg/ml BSA 0.1 ml 1.0 mg/ml BSA 0.1 ml 1.25 mg/ml BSA 0.1ml Unknown 0.2ml protein Working 4.0ml 4.0ml 4.0ml 4.0ml 4.0ml 4.0ml 4.0ml Bradford 2.…Statements: (1) Polysaccharides usually give a negative Benedict's test. (2) The hydrolysis of cellulose and starch would give the same monosaccharide. (3) Reaction of an alcohol with a cyclic monosaccharide produces a glycoside. Group of answer choices All three statements are true. Two of the three statements are true. Only one of the statements is true. None of the statements is true.
- Clinical significance of lipid testing.Laboratory Activity- Assignment (Color Reaction of Proteins) 1. Provide the Principles and detailed procedures of the following tests for the "Color Reaction of Proteins". D. Ninhydrin Test E. Hopkins-Cole Test F. Sulfur Test G. Heller's TestBARFOED’S TEST FOR MONOSACCHARIDESPlace 1 mL (20 drops) of each 1% carbohydrates solution in separate test tubes. Prepare a control with 1 mL water. Add 4 mL Barfoed’s reagent. Place the test tubes in boiling water bath for 10 minutes. Remove the test tubes and cool in cold water. Record your observations. A precipitate of cuprous oxide which may be green to red, indicates that a monosaccharide is present. Record your result and conclusion. Identify the compounds that are monosaccharides. SELIWANOFF’S TEST FOR KETOHEXOSESPlace 5 drops of 2% carbohydrate solution in separate test tubes. Prepare a control with 5 drops water. Add 1 mL of Seliwanoff’s reagent to each test tubes and heat. Record your results. The rapid formation of a bright red indicates that a ketohexose is present. Identify the compounds that are ketohexoses. IODINE TESTS FOR POLYSACCHARIDESPlace 2 mL of each carbohydrate solution in separate test tubes. Prepare a control with 2 mL of water. Add 1 drop of iodine solution…