Objectives test for the presence of monosaccharides by using the benedicts test test for the presence. The purpose of this lab was to conduct a variety of tests using. The purpose of this lab was to determine the different types of nutrients in each of the unknown solutions, aj. Biological macromolecules lab cells, the fundamental units of life, are composed of various combinations of organic macromolecules. What macromolecules would you expect to find in the stomach contents. Biology lab report practical m1 testing for macromolecules title. In our class we have been referring to them as macromolecules since they are necessary for life. Introduction proteins are large complex organic macromolecules which are utilized for many important roles in the body. The chicken broth tested negative for reducing sugars meaning chicken broth. This lab exercise is designed to show you the qualitative tests commonly used to detect their presence. The importance of knowing how to write a conclusion for a lab report.
Benedicts for glucose, biurets for protein, sudan iii for lipids, and lugols iodine for starch. Joining several smaller units, called monomers, together and then removing a molecule of water assemble the. The tests performed were, iodine testing for starch and glycogen, benedicts test for reducing sugars, and the biurets test for protein. Answering the questions below will help you practice using what you know about macromolecules. How to write a lab report conclusion pen and the pad. Place the test tube rack on paper towels and invert the tubes in the rack to dry. Each of these macromolecules is made of smaller subunits held together by covalent bonds. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Danny fish 10911 chemical testing to identify an unknown the hypothesis tested was that depending on the solution presented, which would test positive for one of the following, proteins, carbohydrates, or lipids through use of chemical testing.
Which indicator solutions can test for carbohydrates, protein, and lipids. In this lab, we used various chemical reagents that contain specific macromolecules such as sugar, starch, protein, and fat. A conclusion for a lab report provides a recap of the entire study and gives any further direction on the scientific concept that was explored in the experiment. Testing for sugars and starch carbohydrates are the bodys most important and readily available source of energy. Below is a lab report format that you can use if you do not know what to write or when you need to explain what is contained in various sections of the report. Explain the importance of controls in biochemical testing. We did so by conducting a series of tests on each solution. Testing for sugars and starch kingsborough community. Essay example on testing for biological molecules lab report. For carbohydrate the monomer is sugar and the polymer is a polysaccharides. Identifying macromolecules lab purpose to test for the presence of macromolecules in various materials. It should be short target is ten words or less and explain the main points of experiments and investigations. Carbohydrates, proteins, fats, vitamins, and other nutrients provide your body with energy necessary to carry on life activities. Identification of macromolecules lab report essay 826 words.
Common foods, which often consist of plant materials or. Central to identifying the individual who committed this crime is establishing where the. Once there carefully read and follow instructions to test substances for the presence of the four. Testing for simple sugars benedicts solution turns orangebrown in the presence of simple sugars. Bio 1 biological molecules of life lab report educated.
One characteristic of life is that living things are made up of molecules containing carbon. You will do a lab next week experimenting with macromolecules. Carbohydrates, proteins and nucleic acids are polymers made of smaller subunits called monomers. From the products used only peptidase, chicken broth, regular lime soda, and red bull tested positive for glucose molecules. What do you conclude about the solubility of lipids in polar solvents such as water. The dependants that did not change were the pipettes, the test tubes, the mortar and pedestal, the lab report sheet, and the test tube rack. When you are assigned a lengthy lab report, it is important to include a conclusion paragraph to sum up your procedures and results for your reader. Chromatography mass spectrometer yes yes no yes macromolecules light blue no change mix water with biuret shake and set aside black tanpink liquid no benedicts. Glucose, lactose, fructose, sucrose, starch and cellulose all are carbohydrates which give positive test for molisch test.
Proteins function in structure, transport, energy conversions, and play an. Background the most common macromolecules organic compounds found in living organisms are lipids, carbohydrates, proteins, and nucleic acids. Carbohydrates are important to our body because we need to use. When it occurs alone it is called a free fatty acid. The result would bring out a specific color change in the macromolecule. Elvire nyake lab report macromolecules abstract this lab was done to test for macromolecules consisting of carbohydrates, lipids, proteins, and nucleic acids by using specific reagents to test for each. Mcmush lab report running head mcmush lab mcmush lab. Using soap and a test tube brush located by the sink, wash and rinse all tubes. The macromolecules are assembled by joining several smaller units.
Be sure to include the purpose, hypothesis, your results, and state whether your data support or do not support your hypothesis. Ninth grade lesson macromolecules, part 2murder and a meal. As the name suggests, macromolecules are large molecules that make up more than 90% of the total cell mass. You will be testing for lipids, carbohydrates and proteins. To perform tests that detect the presence of carbohydrates, lipids, proteins, and. This free product, by its not rocket science, is an investigative activity to help students understand the presence of macromolecules in different foods that we eat. The purpose of this lab is to use chemical tests to identify known and unknown solutions of macromolecules. Overview most organic compounds in living organisms are carbohydrates, proteins, lipids, or nucleic acids. These macromolecules are always made of smaller subunits. In this lab, we will be concerned with the nature and activities of the carbohydrates and with their structure. The primary component of fats or lipids is the fatty acid. Murder and a meal the case a murder has occurred right here in our peaceful little town of east peoria, il. Also include at least 2 errors that may have occurred during the experiment.
In this lab, you will biological systems are made up of four major classes of macromolecules. If there is a color modification with any of the testing samples of the 4 macromolecules we can conclude that is various than the initial color in the distilled water of the 4 macromolecules we can conclude that reagents effectively showed us a favorable sample. Results from the testing of 4 solutions for organic compounds carbohydrates, lipids, and proteins. Find the best essay sample on carbohydrates lab report in our leading paper example online catalog. The basic units of three of the four large molecules carbohydrates, proteins, and nucleic acids are composed of chains of smaller molecules monomers connected to form larger molecules polymers. Knowing how to write a conclusion for a lab report can benefit you in many ways.
These biological macromolecules vary greatly in size from several hundred to several hundred million molecular weight units and are made up of monomer units. Mcmush lab mcmush lab madhulika garimella mst biology r3 dupont manual high school carbohydrates, lipids, proteins and nucleic acids are organic molecules found in every living organism. Add 3ml of each of the macromolecules to the correct test tube. A murder has occurred right here in our peaceful town of marietta, ga. Mcmush lab testing for the presence of macromolecules 306 they are. When a test is positive it turns into a redorange color. Testing for the presence of macromolecules background carbohydrates, lipids, proteins, and nucleic acids are organic molecules found in every living organism. The subunits of macromolecules are held together with covalent bonds, and have different structures and properties. View lab report conclusions for macromolecules from biol 1406 at collin. Visit the oklahoma community college website biology labs onlines organic molecules website. Murder and a meal lab activity the case a murder has occurred right here in our peaceful little town of corona, ca. A sample of distilled water is prepared and tested as the controlling sample. A conclusion restates your goals and methods, includes any final data and notes whether you were able to successfully answer the questions posed by your experiment. We uses these reagents to test an unknown for specific nutrients.
The results for most of these products make sense with the exception of the peptidase. Testing for macromolecules in this activity you see how to test types of foods to see if they contain carbohydrates simple vs. As topnotch forensic science students at lassiter high school, you have been asked to assist in the investigation of this most unfortunate incident. Lastly, write 3 questions you have related to macromolecules or this laboratory. Lab 3 identifying macromolecules by angela martinez on prezi. Carbohydrates, lipids, proteins and nucleic acids are the four major classes of organic. These macromolecules are large carbonbased structures. Cells can combine small organic molecules into large macromolecules, forming a higher level in the biological hierarchy. The macromolecule laboratory taught us how to establish a comparison to determine what a favorable and unfavorable test for. This lab helped me realize what macromolecule each different experiment tested for. Macromolecules the four major kinds of macromolecules are carbohydrates, lipids, proteins and nucleic acids.
Heike behr aim the purpose of this lab was to use the scientific. In this lab, you will test for specific compounds and then determine if those compounds are present in ordinary foods. The controls were the positive tests that we used as comparisons to determine if macromolecules were present in the food sample. A biology laboratory exercise using macromolecule assays to. Macromolecules are giant molecules with many atoms and very large masses for a molecule.
We use the chemicals as indicators because they have an obvious and dramatic reaction with specific macromolecules and made it easy for us to identify the macromolecules contained in unknown samples. Even though theyve gotten a bad reputation in the 2000s and have often been blamed for the obesity epidemic in america, carbs are a necessary part of a healthy diet. The indicators that cause these color changes are benedicts, iodine, biuret, and sudan iii paper bag in this lab. The identifying nutrients lab was utilized in the previous. Essay examples of osmosis and diffusion lab report. Any opinions, findings, conclusions or recommendations expressed in this. The introduction amber blot test for lipids the discussion. Testing food for biological macromolecules biology lab report. This lab was done to test for macromolecules consisting of carbohydrates, lipids, proteins, and nucleic acids by using specific reagents to test for each. Any interpretations, statements, or conclusions in this publication are those of the author and do.
Describe how to carry out a simple laboratory test for each of the following. For each macromolecule you must 1 describe the procedure you will follow to perform each test. The macromolecules are assembled by joining several smaller units, called monomers, together. Biologically important molecules page 5 of 12 testing for lipids lipids include a variety of molecules that dissolve in u solvents such as ether and acetone, but not in polar solvents such as water. These macromolecules are large carbon based structures. Mcmush lab 5 mcmush lab testing for the presence of macromolecules carbohydrates, lipids, proteins, and nucleic acids are organic molecules found in every living organism. Testing food for biological macromoleculesnutrients by. To test for macromolecules carbohydrates, lipids, nucleic acids, and proteins, iodine solution, alcohol, acetoorcein stain and copper sulfate solution are used. Is when you are using a solution that you know does not contain the macromolecule you are testing for. A carbohydrate is an immediate form of energy in your body.
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