Investigating The Effect Of Macromolecules On The Body : Glucose, Lipids, Starch, And Protein

The main goal of this lab was to figure out what a murder victim's last meal was, so we could question the people that the victim last came in contact with. Our materials included a brown paper bag, a stirring rod, pipettes, test tubes,biuret solution, bro blue solution, vegetable oil, 5% gelatin solution, 5%glucose solution, 5% starch solution, and the contents of the victim's stomach. We started with a positive control test of each solution. For the positive lipid test we spread a small drop of the vegetable oil onto a paper bag and held it up to the light, the vegetable oil soaked in and became transparent. For the positive proteins test we added a full pipette of 5% gelatin solution into a test tube along with 5 drops biuret solution

Macromolecules are large numbers of atoms. In this lab there were three major macromolecules which were sugar, starch and fats which were all tested and studied. There was also the subunit of carbohydrate which was sugar what was also tested in the lab. The subunits of of the three major macromolecules were amino acids which makes up the macromolecule of protein there was also glucose which is the subunit of the macromolecule starch the final subunit was the fatty acids which make up the macromolecule of lipids or fats. There were a variety of food solutions that were tested during the lab. Not all food solutions had a macromolecule present for example in the Biurets test for protein only the solutions of albumin, pepsin, and peanut butter had significant protein. Another test during

The purpose of this lab was to test different substances using various procedures to see what biomolecules were present and ultimately find out what restaurant Anna Lyza had eaten at before she died. For the first control test, we used vegetable oil to test for lipids. So, if the solution does not contain lipids, it does not become translucent when placed onto a paper bag square and held up to a light. So, it is a negative result. However, in the presence of lipids, the solution will become translucent when placed onto a paper bag square and held up to a light. Therefore in this case, the result is positive. On the other hand, we used albumin egg to test for proteins in another control test. If the solution does not contain proteins, it will not experience any color change and so it is a negative result. When there are proteins existing in the solution, it will turn bluish/purplish and for this reason it is a positive result. Furthermore in the third control test, we used dextrose to test for simple carbohydrates such as glucose. If the solution does not contain simple carbohydrates, it will not undergo any color change and will remain a blue color. So, it is a negative result in this circumstance. If there are simple carbohydrates present in the solution, the solution will turn reddish and so the result is positive. For the last control test, we used starch solution to test

All living things contain some form of organic macromolecules including: Lipids, proteins, carbohydrates and nucleic acids. All of these organic molecules are alike in the sense that is they are made up of bonded elements such as carbon, hydrogen, oxygen, and to smaller quantities nitrogen, phosphorus and sulfur. The macromolecules each contain large long chains of carbon and hydrogen atoms and often consists of repeating smaller molecules bonded together in a repeating pattern (polymers). To test whether a specific solid white substance is a protein is simple due to the unique chains found in the respective type of macromolecule. To test if the substance is a carbohydrate, two tests could be performed on separate samples of the object. First,

Macromolecules are present in each of the five foods being tested which are pretzels, green peas, apple juice, biscuit mix and bacon bits. To determine this, reagents for the four macromolecules are being used which are Benedict’s, Iodine, Sudan IV and Biuret Solution. The independent variable in this experiment are the different foods being tested. The dependent variable in this experiment is the presence of the macromolecules.

2. Four unknown samples were included in the lab kit: flax seed meal, potato starch, egg whites, and dried milk. Using the results of the biochemical testing, determine which number corresponds to the correct unknown. (8 points)

7)a) You would do the Benedict’s reagent test for simple sugars and the Lugol’s solution or Iodine test for polysaccharides and starch. To test the lipids you would use the Sudan iV test and Biurets reagent test for protein.

Analysis: In this experiment, every substance tested positive for at least 1 organic compound. Corn oil tested positive for lipids. Honey and oats tested positive for starch. Honey, apple juice, and unknown 1 tested positive for sugar. Egg white, gelatin, and unknown 2 all tested positive for proteins. So, not a single substance didn't test positive for at least 1 organic compound. All the indicators used in this experiment change color when in the presence of a compound; therefore, they chemically react with the compound. No errors were made during this experiment

A macromolecule is a large molecule composed of small molecular units called monomers that are linked to together in long chains called polymers. Lipids are hydrophobic, non polar macromolecules that insulate organs, store energy, and make up cell membranes. Their monomers are called triglycerides. Proteins are another example of macromolecules. Made up of monomers called amino acids held together by peptide bonds, proteins provide structural support, defense, and cell regulation. The third macromolecule that is going to be tested for are carbohydrates. Carbohydrates, such as sugars and starches, are needed for energy storage and are made up of monomers called monosaccharides.

One important detail from the investigation was that all the men had eaten oatmeal at the Eclipse Cafeteria on the same day and they all had the same illness shortly after eating. Since they all became ill after eating at the cafeteria, it was reasonable to consider the cafeteria as the source of the disease. Additionally, the fact that they all had the same illness supports the fact that a common factor (i.e., eating oatmeal at the Eclipse Cafeteria) caused the illness. Commonalities are important because they can help narrow down possible illnesses and they can help pinpoint the source, which in this case was poisoning from sodium

The  lab was broken into three parts:  Part  1 dealt with identifying a  cation, Part 2 an

The materials used for the first part of the experiment comprised of the following: a microscope, 4 slides, 4 slide covers, blood samples, lancet, a sheet of paper towel, 3 test tube droppers, Solutions A, Solutions B, and Solution C.

During the late 19th century, the medical practice has shifted to favor the scientific approach with the dominated laboratory medicine (Gere). Human bodies were viewed as tools for research purposes, their conditions were perceived as being governed by the physiological laws in which can be further modified for the observation and analysis (Gere). In his book of Experiments and Observations on the Gastric Juice and the Physiology of Digestion, William Beaumont’s experiment on his patient, Alex St. Martin, was relied profoundly on the detailed observation method. However, Beaumont also modified various of condition to test on Martin’s body at the time to figure out the digestive system pathway. The book is the record of several details on the

The A0 urine sample comes from a 30-year-old adult who is also an extreme athlete.

Iodine was used to test for the presence of starch, remaining yellow for its negative control and becoming a blue-black colour if a reaction occurred;