Table 1, Effect of enzyme concentration Amount of lodine Test Results (color) Amylase Enzyme 0 drops 3 drops 6 drops 9 drops 0 min dark blue dark blue dark blue dark blue 5 min dark blue dark brown brown light brown 10 min dark blue light brown light green green Benedict's Test Results (color) 10 min bright blue light blue yellow yellow/red
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- Topic: Isolation of Crude Ovalbumin from Egg White by Ammonium Sulfate Precipitation (Salting Out) The computed amount of powdered ammonium sulfate was added to the egg white sample portion byportion with constant stirring while submerged in an ice bath. The solution is expected to become moreturbid, and a white precipitate is expected to form. The resulting mixture was then filtered using a cheesecloth. The residue was discarded, and 30.0 mL of thefiltrate was brought from 40% to 60% saturation by adding the required amount of powdered ammoniumsulfate in the same manner as the previous addition. After adding ammonium sulfate, the mixture was allowed to stand with occasional stirring for 30 minutes inan ice bath. The formation of a white precipitate is expected to happen QUESTION: Explain the significance of allowing the mixture to be submerged in an ice bath for a given time.Unknown Testing: Which compound(s) were present in the unknown sample? (sugar? starch? protein?option isoelectric focusinggel filtrationsalting outdifferential centrifugationEdman degradationion exchangedialysis
- FEHLINGS TEST You can use this as your reference : https://youtu.be/rKng5-ij6kQThe 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…TEST TUBE TEMPERATURE 5 °C 37 °C 70 °C Minutes A Blue Blue Blue O min В Blue Blue Blue 3 mins 6 mins 9 mins C Blue Red Blue D Blue Red Blue E Red Red Red 12 mins F Red Red Red 15 mins G Red Redd Red 18 mins TEST TUBE pH level 6.8 8 A Blue Blue Blue В Blue Blue Blue C Blue Red Blue Blue Red Blue E Blue Red Blue Red Red Red Red Red Red 1. Based on your data, what is the optimal temperature for amylase to hydrolyse starch? Explain your observation. 2. How is the activity of amylase affected by different pH levels? 3. What is your rationale about the effects of pH level and temperature on amylase activity?
- nsert Format Arrange View Share Window Help Biology Lab Exam 1 Sp 21 目 125% v Collaborate Insert Table Chart Тext Shape Media Comment View Zoom Add Page 3. (1 point) Show the answer to the following question in correct significant figures. 10.219 + 3.12 = 4. (7 pts) True or False. Circle the correct answer. True or False. A blank used to zero of spectrophotometer always contains just distilled water. True or False. The mode is the most commonly occurring number in a data set. True or False. One milliliter (mL) equals 1,000,000 microliters (µL). True or False. Peroxidase activity increases when the enzyme is boiled True or False. Enzymes are carbohydrates. True or False. Denaturing involves an enzyme breaking down into individual amino acids. True or False. Hydroxlyamine is a competitive inhibitor of peroxidase. 5. (1 point) How many µL (microliters) are in 2.32 L? Show your work for full credit. 6. (1 pts) Convert 1,745 mm tọ Km. Show your work for full credit. MAR étv 9. MacBook Airtopic: Isoelectric Precipitation Appearance of the mixtures containing casein mixed with different buffer solutions: (a) TestTube 1 containing Glycine-HCl buffer; (b) Test Tube 2 containing Acetate buffer; and (c) Test Tube 3containing Phosphate buffer. QUESTION: Based on the given results, what do you think is the isoelectric pH of casein? Briefly discuss your basis for determining it.Direction: Read and analyze the following laboratory experiment and answer the following question. PART 1: SURFACE AREA AND CELL SIZE Materials: Agar containing NaOH, and the pH-indicator dye phenolphthalein cured into cubes of various size, 3 plastic cups, HCl, metric ruler, paper towels. Methodology: 1. Safety: Wear goggles and nitrile gloves while completing this lab. 2. Obtain three different size blocks of pink or blue agar. Using a ruler, measure the length, width, and height of the three blocks given below. Cut the agar according to the given dimension. Small = 1 cm x 1 cm x 1 cm Medium = 2 cm x 2 cm x 2 cm • • Large = 1 cm x 1 cm x 6 cm 3. Record your data. 4. Pour HCl or vinegar into two small cups. Place the one larger "cell" into one cup and the two smaller cells in the other cup. Start timing 30 minutes. 5. After 30 minutes, remove the cells and blot them dry with a paper towel. 6. Using your ruler, measure the distance the HCl has diffused into the blocks as shown on the…
- Brad ford Part V. Whole Cell Lysate Protein Concentrations cell Plate Abs HI- control H2=0.450 SAMPLE (Total Protein] (mg/mL) (w/ Dilution Factor) ТОTAL TOTAL* Dilution Assay Abssos Growth Diet Vol. (uL) Vol. (uL) Factor YPAP 200 450 1,000 ***TOTAL Dilution Factor INCLUDES pre-Dilution factor x Assay Dilution factor! Sample Total Protein Concentration and Dilution Calculations Please show how you calculated the total protein concentration for one of your lysates, then how you would construct a 100 µl sample diluted to a working concentration of 1.0 mg/mL. If your diet has a total protein concentration LOWER THAN 1.0 mg/ml, then show how you would dilute your diet down to 0.1 mg/ml instead! As always, don't forget to MIND YOUR UNITS!!!urine protein electrophoresis principledescription of a the oxidase test