Specimens can be living or dead, but often need to be stained with a coloured dye to make them visible. Then, we would add various amounts of different solutions, and recorded which kind of reaction each mixture had. Background: Cellular respiration is a process in which the food molecules are broken down to release the energy; and it has three main parts: glycolysis, the Krebs cycle, and the electron transport system. Genotype, Genotype-phenotype distinction, Phenotype 309 Words 2 Pages 10 Test Tube Mystery Introduction: The students were handed 10 test tubes with no identification. In our present project we will receive a pure culture of unknown bacteria and using the techniques and procedures that we learned in the lab we will try to identify the underlying microorganism. Once that was established we hypothesised what would be a good food to test within the limits of our test. The last groups of tests were on lipids.
This is what makes them seem colorful. Statement: In this lab we conducted an experiment in order to determine what macromolecules where present in foods and how to distinguish. Fire Blanket 2 points In case of a small fire a fire blanket can be thrown over the flames to extinguish them, once you have done this immediately leave the vicinity. Purpose: To evaluate the nutrient content of two unidentified foods. It is a polysaccharides that are joined by many glucose units. Vegetation changes over time, as well as the types of animals in a general area.
Discerning this type of information about the foods we take in is crucial for the promotion of a healthy lifestyle and better quality of life overall. The carbohydrate test for starch was self-explanatory. One thing that is not a good idea is to measure the time taken for the reaction, for as the time-course shows it is very difficult to say when the reaction ends: it just gradually approaches the end-point. The tension test is one of the laboratories which help students develop their knowledge in this course by practice. The experiment started by cleaning the test tubes and labeling them 1 through 4. When it comes in contact with a monosaccharide, the solution in the test tube turns pink and when there is no reaction, there is no colour change. Then we were to criticize certain articles comparing with articles found on the internet.
Each point on this second graph is taken from a separate initial rate measurement or better still is an average of several initial rate measurements under the same conditions. Vodopich and Randy Moore are results to a similar experiment. The writing should be simple and easy to understand. Oils are liquid at room temperature and are called unsaturated. Our hypothesis was based on the idea that athletes and body-builders often have eggs as a prominent part of their diets because is a good source of protein. They also have interior skeletons and have bilateral symmetry.
Evaporation, Fern, Microscope 666 Words 3 Pages found in a compound. Abstract: In this lab investigation we will observe how the amount of hydrogen peroxide is affected by catalase over time. What are some sources of error in this lab? Our goal was to see which one utensil bird beak would outcome the other four utensil bird beak by being able to survive with the limit amount of food, the environmental chances, and see who. Conclusion Once the lipids have been hydrolysed, the mixture of ethanol and the lipids are decanted into a test tube of water. Marris C, Wynne B, Simmons P, Weldon S. We were sure that eggs main organic compound was protein, thus our future tests would have to yield violet or a teal color. Both the Lipids and Starch Tests had no reaction; in the lipid test, there was not a translucent spot because the lemonade evaporated, and in the starch test, there was no reaction because the color did not change once iodine was added.
The results show that consumption of oxygen is highest at 13 degree Celsius and lowest for temperature at 26 degree Celsius. Salad oil, lard, and margarine all proved to have lipids by showing translucent spots. Place about 5 mL of each solution into each test tube, and 10 mL of Hydrochloric Acid into. Each of the thirteen key investigations will have an inquiry-based option for student groups. There was also no band of 195bp at 0% control standard lane. There has been a recent resurgence in the use of light microscopy, partly due to technical improvements, which have dramatically improved the resolution far beyond the theoretical limit.
Eye Wash 2 points If chemicals splash into your eye the eye wash station is used to flood the eye with water for 15 to 30 minutes to wash the chemicals out of your eye. You may have a lab partner, but the work that you do and report on should be your own. The hypothesis was that color would change blue-black on the starch sample and not on the sugar samples. These bonds are called peptide bonds. Saturated fats remain solid at room temperature and are unhealthy, while unsaturated fats remain liquid at room temperature are healthier. An indicator is used in each test to show the presence of each biomolecule.
Biuret reagent is a mixture of a strong solution of sodium or potassium hydroxide and small amount of very dilute copper sulfate. Since the photosynthesis takes place in chloroplasts that has chlorophyll, the rate of photosynthesis can be affected by different colours of light, since the absorption of light changes within different colours. There is a specific style that must be followed when writing scientific reports. Materials: Chromatography paper, Food coloring, Ruler, Pencil, Solvent solution, Test tubes, Test tube rack. Genetic engineering, Genetically modified food, Genetically modified organism 1221 Words 3 Pages Lab Report: Halogen Reactions Purpose: This experiment will allow for exploration into some of the properties of Group 17 elements halogens and their compounds. In order to find out the many different ways we as organisms obtain these essential organic compounds, we can test common food items we consume. Enzymes are thought to have an area with a very particular shape.