How To Write A Macromolecules Lab Report

The most surprising results of recording my data was my results for the water. Water was negative for every chemical test. Which is what I expected because it does not have any sugar to pass a carbohydrates test, steroids, fats, nor amino acids to pass the remaining tests, although it has so many health benefits for the human body it. Each food item was different with each extraction of macromolecules. The most proteins in the foods that were tested positive were only there, with six being negative. Out of the whole experiment the lowest number was two, when testing for positive

The materials used for this experiment were, distilled water, albumin, pepsin, and starch. The liquids used to identify these organic molecules were Biuret reagent, Benedict’s reagent, and iodine solution. Biuret reagent is a blue colored liquid that identifies proteins or peptides in a solution. Benedict’s

“Organic chemistry just now is enough to drive one mad. It gives me the impression of a primeval forest full of the most remarkable things, a monstrous and boundless thicket with no way to escape, and into which one may dread to enter,” said Baron Jons Jakob Berzelius. In this experiment we are testing for biomolecules such as protein, starch, lipids and sugar. The reagents being evaluated in this lab are Benedict, Iodine, Sudan, and Biuret. The conclusions are based on the results we have performed. Depending on color, the conclusion will either come out positive or negative. In Benedict’s test, we are determining whether reducing sugar is present or not. The negative results to the color blue, no precipitate (no

A cell is the fundamental building blocks of all living organisms. Cell’s consist of four biopolymers; protein, carbohydrates, lipids, and nucleic acids. Each macromolecule is a polymer that is formed from molecules known as monomers. In this experiment samples will be subjected through a variety of chemical tests using procedures that will detect the presence of each macromolecule; carbohydrates, protein, and lipids. The specific chemical tests that will be used during this experiment consist of the Biuret test which is a test used to determine the presence of peptide bonds in protein, which is the chemical bond that holds amino acids together. The test relies on a color change to confirm the presence of proteins. If proteins are present,

We tested for simple sugars, starch, protein, lipids, and pH.

Experiment 7 “Carbohydrates” and the purpose for this lab is to become familiar with the properties of different classes of carbohydrates. Test such properties of carbohydrates as solubility, reduction, and hydrolysis. To do part A (solubility), begin by adding 10 mls of distilled water to three test tubes and add 2 grams of starch to one tube, 2 grams of glucose to the second, and 2 grams of sucrose to the third test tube. Shake it well and record it on the data sheet. Part B (benedict’s test), place 5 clean test tube in a test tube rack and add 3 ml of benedict’s solution to each and label 1-5. Add 2 mls of a 5% solution of: glucose (1), lactose (2), maltose (3), fructose (4), and sucrose (5), and place all of them into boiling water for

In this lab, we are identifying carbohydrates, proteins, lipids and nucleic acids via biochemical tests. In order to identify reducing sugars, we performed Benedict’s test. Aldehydes and ketones reduce weak oxidizing reagents such as the cupric in Benedict’s reagent. Positive tests are indicated by a green to red color and this was true because we found reducing sugars and glucose turned red while onion remained brown-green since it contained few sugars. The remaining solutions were blue because no sugars were present. The iodine test helped distinguish starch from mono, di and polysaccharides. When iodine reacted with the starch solution and potato juice (which contains starch) it turned blue-black. It remained an amber color with the other solutions because they weren’t coiled carbohydrates. The Biuret test helps indicate the presence of peptide bonds. A slight pink color such as the one displayed by the protein solution and egg albumen indicated a positive result. This should’ve been the case because eggs have proteins and proteins contain peptide bonds. All other solutions were clear because there were no peptide bonds (the amino acid solution was clear because freely floating amino acids contain no peptide bonds). To identify lipids we checked their solubility by placing them in a fat-soluble dye called Sudan IV. We discovered that the darkest

Glucose which is a sugar gave a positive result. Starch is founded in plants therefore gave a negative result. Unknown which didn’t contain sugar gave a negative result. Distilled water which is the one used as a control gave a negative result. Onion Juice which contain monosaccharides and polysaccharides gave a positive result. Potato juice which has little sugars gave a positive result.

Having a chance to participate in chemistry lab is a good thing for people. Based on the research, all the science majors always need to write a lab report after performing a certain experiment. Chemistry is a subject in which we all need to turn in the lab report the to teacher. Based on the lab report, the professor can see how his student understands and applies the lab to life. When writing lab reports, there are certain formats and contents of the lab that must be followed in order to convey the information which is performed. In some cases, lab reports may not be persuasive, so the lab will have to have strong evidence. There are two reasons why writing up the lab reports can be difficult are writing the result and getting a great partner. We have to perform a certain experiment and approach the topic. So the lab report consists of four parts: introduction, procedure, results, and conclusion.

To start, the materials necessary for experimentation were obtained. 4 pipettes of cooked starch and 4 pipettes of -amylase were stirred together in a beaker to simulate the food mixing with saliva. A dialysis tubing was then opened and 4 pipettes of the starch-amylase solution was added into the tubing and was then placed into a large beaker that was filled two-thirds full of water and also included 4 pipettes of Lugol’s reagent. This was the experimental trial. A control bag was also set up, with everything staying the same with the exception that there was no -amylase in the dialysis tube to simulate food mixing with saliva. The two experiments were then left for an hour before they were analyzed for the

Small molecules are the low molecular weight organic compounds having capacity to inhibit the growth of bacteria or their virulence potential. Previously, antibiotics were used for these purposes but today we need to be curious before using antibiotics due to the developing resistance. If antibiotics develop resistance, they are no longer effective for prevention, treatment or control of diseases caused by infectious microorganisms. Researchers are now exploring the new strategies and new compounds that can take the advantageous place in front of antibiotics. Use of probiotics, vaccine, herbal extracts are some of the new strategies. On the way of discovery and research, scientists are now

A set of three experiments will be conducted in order to determine the factors that are necessary to breakdown starch, proteins, and fats. During the breakdown of starch, the enzyme amylase will be a necessary

In order to record and test the experiment, I used a Microsoft Excel Meal Plan

*Table #3shows the results of iodine test on the given 12 samples, in which 2 are indicated positive: sample #7, the glycogen solution, and sample #8, the starch solution. The two can also be considered as positive controls for this section.

First, put on an apron and a pair of safety goggles. Then, take a pipette and drop around 2 dropper fulls of the vomit sample into a test tube, and place on the test tube rack. After that, put one dropper full of Benedict’s Solution into any test tube. Then, place the test tube into the beaker that is placed on the hot plate. As you put in and take out the test tube make sure that you are using the orange glove and clamp, also make sure that the opening is not facing you. After you wait five minutes, you can take the test tube out and look for a color change. If it turns to the color red, orange, yellow, or green then your sample does have the simple sugar carbohydrate. If your sample turns blue then it does not contain the simple sugar carbohydrate. Lastly, record your findings in the data chart, wash the test tube, and place it back onto the test tube holder.