English marigold cream Pick and chop two handfuls of English marigold, including the flower, the leaves and the stem. Heat half a kilo of lard. Add the English marigold, leave it to boil for a short time, stir and remove from heat. Leave it to rest overnight. Heat the mixture slightly the following day, so that you are able to strain it.
We then used a small mortar and pestle to crush the aspirin and we placed the resulting powder into a conical flask, we crushed the aspirin tablets so that I would be easy to mix with the ethanol. We then added 5ml of ethanol using a measuring cylinder and covered the flask with a watch glass, we did this to avoid evaporation. We then gently heated the mixture over a water bath of around 60-70°C and swirled frequently, we did this so that it would dissolve the acetylsalicylic acid. We then filtered off the hot solution to remove any insoluble material in another small conical flask, we rinsed the flask with a few ml’s of chilled ethanol to collect any residue that was left on the flask. We then slowly added 25ml of chilled deionised water to the filtrate to initiate crystallization by using a measuring cylinder and a dropping pipette, once we had done this we left it for about 10 minutes to allow crystallization at room temperature.
Then get the Acetic acid and pour exactly 100mL of it into the graduated cylinder (This should almost fill it up). When that is completed repeat steps 1 and 2 four more times, which would mean five graduated cylinders of 100mL of Acetic acid. Part 3: Carrying out the reaction Wash the 250mL-beaker and dry it with paper towels. Add one of the 4.2 grams of catalyst (Sodium Hydrogen Carbonate) that has been obtained in step one into the beaker. Making sure that the beaker is dry before hand.
7)Use toothpicks to transfer the dye from the skittles onto the coffee filter strip. 8)Measure about 1/4 inch from the top of the coffee filter strip and tape pencils to the top. 9)Place each coffee filter strip over a cup with the pencil holding and balancing it at the top. 10)Fill cup with water so the water is slightly touching the coffee filter strip. 11) Once the dye has reached the near top of your cut coffee filter (1/4 inch) take them out and dry them.
Title: How Different Colored Lights Affect the Growth of Plants Introduction: This experiment had multiple objectives. The first objective was to establish what colors of the light spectrum photosynthesis uses. The second objective was to determine which colors in the light spectrum help a plant to grow faster, and which slow the growth of a plant down. In photosynthesis, light energy from the sun is absorbed and reflected. When a plant has green leaves, the leaves appear green because the pigments inside the plant reflect the green light into our eyes and absorb the other colors in the light spectrum.
To start gram staining, I slightly pour crystal-violet all over the slide and let it sit for 30 seconds before wash it off with water. Next, I dye the Unknown with Gram’s iodine to create a complex only have on gram positive. The slide is rinsed by water after 30 seconds. Decolorization is the next step of the whole process. I let the alcohol flow on 45-degree angle slide within 15 seconds and wash it with water to remove colors on the surface.
Your Agar plate should now be sterilized, the process of sterilization should be finished. Procedure of the experiment: Prepare all the test tubes and place them in their respective test-tube holders. Put 10 millimeter of the 0.9 % saline solution in one test tube. Put 10 millimeter of the chicken broth in the other test tube. Put 1 capsule of the bioflorin into each of the test tubes and tap them until the capsule dissolves.
The purpose of this lab was to test the effect of pollution on algae growth. Through a series of experiments that lasted a month, four of the six hypotheses were proven to be correct or partially correct. The first hypothesis stated that if 0.5 mL of salt was added to algae, then the algae would grow slower than the positive control. This was proven correct, as shown by the difference of the data from the positive control and the container with 0.5 mL of salt in it. The end rating of the Salt #2 container was 1, which is not as high as the end rating for the positive control: 1.5.
Use the following criteria for the preparing of arrange of dilutions in the agar: On the base of steriled petri dish,label each of the concentrations required then place 1ml of the dilutions in water each of them in the labeled dishes after preparing them with the addition of one ml watter in control plate; 19ml pipette containing melted agar is cooled and then added to each plate and mixed together adequately and this mixing is an essential matter. Plates should be dried well after setting them carefully and the lids must be tiped for 20-30 mins.at 37C in the incubator, as the plates inoculated this is done by two methods either as multiple spots of inoculator or by using a platinum or wire loop which is designed for deilevery of 0.001ml over asmall area; the culture shall be diluted in either cases and contains 105to106 organismsml and this is obtained by the addition of 5µl broth culture overnight to 5ml peptone water. Electrolyte deficient and selective media should not be used to avoid giving false results due to the variable effects in the content of the salt on many antibiotic actions. Translation of the results
This suggests that the lights which produced heat are less suitable for use with the growth of these plants. The hypothesis was that the heat producing bulbs would make the plants produce more oxygen as they would be photosynthesising more, however the results disprove this idea. A possible reason for this is that the plants used were both aquatic and so are more used to cooler temperatures. Therefore their optimum temperatures for photosynthesis would have been lower than the usual for land plants, suggesting that the warmer temperature reduced their efficiency. (“Aquatic Plants for Freshwater Aquariums”) The results on the graphs are grouped in clusters, each cluster represents the result obtain with the different light bulbs.