Why? Experiment 2: Starch Test Fill in the table below with the results from the starch test experiment. Results Starch Test Solution Initial Color Color with Iodine Solution starch solution water Iodine solution is added to a chocolate chip cookie solution. The color changes to purple. Based on this result, what biological molecules are present in the chocolate chip cookie solution?
Results Starch Test Solution Initial Color Color with Iodine Solution starch solution clear gray water clear yellow 2.Iodine solution is added to a chocolate chip cookie solution. The color changes to purple. Based on this result, what biological molecules are present in the chocolate chip cookie solution? Starch is present. 3.What is the relationship between monosaccharides and starches?
• Second, you close one end of the tube with a clamp. • Third, you place 10 ml. of solution A,B,C into separate dialysis bags with a pipet. (Solution A- with sucrose, solution B with twice as much sucrose, and solution C containing water.) • Fourth, clamp the other end of tubing, leaving about a 2 cm.
After we added the KHP to the 50 mL of water, we placed each one of the flasks onto a stir plate with a magnet in each flask so we achieved maximum stirring. This process took about 5 minutes for all the flasks to be completely stirred. After my group that the flasks were mixed enough, we added roughly 5 drops of indicator (phenolphthalein) and then got our burette and added
Milk Lab Purpose: To observe how different fat contents of milk react to food coloring and dish soap. Hypothesis: If we increase the fat content of the milk then food coloring won’t spread as fast. Materials Red food coloring | 11 ml fat free milk | Blue food coloring | 11 ml 2% milk | Green food coloring | 11 ml whole milk | Petri dish | Dish detergent | 25 ml graduated cylinder | Colored Pencils | Procedure: 1. Measure 11ml of desired milk in graduated cylinder. 2.
Diffusion and Osmosis Lab Part 1A: Diffusion Evidence: Table 1: The Color of Different Solutions Before and After Diffusion for 30 Minutes Content | Initial Solution Color | Final Solution Color | Bag15% glucose1%starch | Cloudy white | Very dark purple | BeakerWater + IKI | Golden yellow | Golden yellow | The above table represents the final and initial colors of the solution that was inside of the dialysis tubing and the solution that was in the beaker. A 15% glucose and 1% starch solution was placed inside of the dialysis tubing. The initial color of the solution in the bag was a cloudy white but after 30 minutes of sitting in the beaker of water and IKI the color turned a very dark purple almost black. Inside of the beaker was a water and IKI solution. After sitting for 30minutes this solution stayed the same color.
Allow the crystals to dry for 1 week then, weigh it, take a MP, and calculate the % yield. * Assemble the apparatus for reflux using the diagram (see figure 1), place boiling chips or a stirring bar in the bottom of the flask. * Weigh 2grams of finely ground nutmeg and combine with 10ml of diethyl ether in a 50ml round bottom flask. * Place a heating mantle under the round bottom, turned on and the heat was slowly adjusted until the mixture starts to boil for 45minutes, then let cool to room temperature by sitting it on the lab bench. * Pour a little ether over the nutmeg residue on the filter paper so that any Diethyl ethanol traces clinging to it is washed down and mixed with the filtered liquid underneath.
During this test I used 2mL of Egg Albumen solution, 2mL of honey solution, 2mL of the protein solution, 5 drops of the unknown solution (3), and 3 drops of Biuret reagent to each solution. My third and final test was for Lipids
c Use the syringe to place 2 cm3 of amylase into the test tube. d Add 1 cm3 of buffer solution to the test tube using a syringe. e Use another syringe to add 2 cm3 of starch to the amylase/ buffer solution. Start the stop clock and leave it on throughout the test. Mix using a plastic pipette.
First I made a water bath by filling the 100 mL beaker with cool tap water. I then placed crushed ice in the 100 mL beaker so the water level was just below the top of the beaker. I sprinkled a little salt in the ice water and mixed it well. I then filled the test tube half full with distilled water and set the test tube in the 24 well plate. I inserted the digital thermometer into the test tube and took reading every 30 seconds until the readings remained constant.