We uses these reagents to test an unknown for specific nutrients. Identification of macromolecules lab report essay example. Explain the importance of controls in biochemical testing. Biologically important molecules carbohydrates, proteins, lipids, and nucleic acids prelab assignment. In doing the lab, one was able to determine the characteristics of the given. Identification of macromolecules lab report essay 826 words. There are four major classes of biological macromolecules. B of the lab test for carbohydrates and lipids the students should all write on. In this lab, we used various chemical reagents that contain specific macromolecules such as sugar, starch, protein, and fat. To be able to distinguish positive from negative test results. Identifying the four major classes of macromolecules through various tests. These macromolecules are large carbonbased structures. The subunits of macromolecules are held together with covalent bonds, and have different structures and properties.
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. Macromolecules the four major kinds of macromolecules are carbohydrates, lipids, proteins and nucleic acids. First, we tested how the amount of peroxidase would affect the rate of reaction. Lab report each student should prepare and turn in a summary of the unknown test results. Biology lab report practical m1 testing for macromolecules title. Benedicts for glucose, biurets for protein, sudan iii for lipids, and lugols iodine for starch. Peroxidase lab report bio 101 general biology i studocu. Depending on the test performed, certain results acquired, clearly identified the macromolecules present in each solution. Biologically important molecules post lab professional. Many of these molecules are long polymers, and thus collectively referred to as macromolecules.
In the report section please write a brief report for the csi team, indicating. Results from the testing of 4 solutions for organic compounds carbohydrates, lipids, and proteins. Bio 3a laboratory biologically important molecules. 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. Course testing for macromolecules lab report introduction taking data, but this is inefficient and not always possible. A biology laboratory exercise using macromolecule assays to.
Therefore, the black water bath for 12 minutes figure 1. Carbohydrates, proteins and nucleic acids are polymers made of smaller subunits called monomers. Identifying macromolecules lab purpose to test for the presence of macromolecules in various materials. Visit the oklahoma community college website biology labs onlines organic molecules website. Biology 20 laboratory lifes macromolecules objective to observe and record reactions between three classes of macromolecules in the presence of simple chemical indictors. 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.
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. You must submit the completed lab worksheet for credit. Jun 29, 2019 biological systems are made up of four major classes of macromolecules. Print this entire lab packet and bring it to the laboratory. How to write a biology lab report with pictures wikihow. Elvire nyake lab report macromolecules abstract this lab was done to test for macromolecules consisting of carbohydrates, lipids, proteins, and nucleic. This lab was done to test for macromolecules consisting of carbohydrates, lipids, proteins, and nucleic acids by using specific reagents to test for each. Macromolecule testing introduction organic molecules. Find the best essay sample on carbohydrates lab report in our leading paper example online catalog. 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. Aug 02, 2012 bio 1 biological molecules of life lab report. Macromolecule food indicator lab in this lesson students will. Essay about identification of macromolecules lab report 811 words 4 pages identification of macromolecules introduction the most common macromolecules found in living organisms are lipids, carbohydrates, proteins and nucleic acids. In this lab, you will biological systems are made up of four major classes of macromolecules.
Testing food for biological macromolecules biology lab report. The introduction amber blot test for lipids the discussion. The primary component of fats or lipids is the fatty acid. Benedicts solution was used to test for the presence of simple sugars, such as glucose monosaccharide. 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. Scribd is the worlds largest social reading and publishing site. The purpose of this lab was to determine the different types of nutrients in each of the unknown solutions, aj.
You will be testing 5 different foods, one of which will be an unknown. To begin the testing, nine test tubes were label by the sample name such as water, albumin, and starch and so on. The macromolecules are assembled by joining several smaller units, called monomers, together. The result would bring out a specific color change in the macromolecule. This lab helped me realize what macromolecule each different experiment tested for.
In our class we have been referring to them as macromolecules since they are necessary for life. Lab 4 macromolecules overview in addition to water and minerals, living things contain a variety of organic molecules. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Biomolecules in my food center on disability studies. Objectives test for the presence of monosaccharides by using the benedicts test test for the presence. Visit the oklahoma community college website biology labs onlines organic molecules websi. Background the most common macromolecules organic compounds found in living organisms are lipids, carbohydrates, proteins, and nucleic acids. The students will submit a completed lab report that will be graded based on a. 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.
When it occurs alone it is called a free fatty acid. Answering the questions below will help you practice using what you know about macromolecules. These macromolecules are always made of smaller subunits. Students are expected to read pages 1 to 3 before coming to the lab to complete the experiments. Joining several smaller units, called monomers, together and then removing a molecule of water assemble the. These biological macromolecules vary greatly in size from several hundred to several hundred million molecular weight units and are made up of monomer units. Lab report 2 nathanheckendorf bio181l aprilhite testing the.
A macromolecule is a large molecule that has small molecules. The center for elearning multimedia team motion graphic eduardo rodriguez filming eduardo rodriguez, david cheng photography eduardo rodriguez video edit eduardo rodriguez audio. The beirut test was used to detect the presence of peptide bonds within. This lab exercise is designed to show you the qualitative tests commonly used to detect their presence. Find the best essay sample on identification of macromolecules lab report in our. Jun 03, 20 this lab helped me realize what macromolecule each different experiment tested for. This lab exercise is designed to show you tests commonly used to.
Be sure to mash your food into a paste before testing. Biology lab reports have a specific format that must be followed to present the experiment and findings in an organized manner. The indicators that cause these color changes are benedicts, iodine, biuret, and sudan iii paper bag in this lab. To perform tests that detect the presence of carbohydrates, lipids, proteins, and. This lab exercise is designed to show you the qualitative tests commonly. The biurets test identifies proteins by oxidizing 46 peptide bonds of a protein. Biuret test was for amino groups present in proteins. Common foods, which often consist of plant materials or. Which indicator solutions can test for carbohydrates, protein, and lipids. In this lab, we will be concerned with the nature and activities of the carbohydrates and with their structure. Essay about identification of macromolecules lab report bartleby.
When heated, the solution mixed with monosaccharides produced a reddishorange colour. This experiment was meant to teach us the four kinds of macromolecules. Students will solve a murder mystery using their knowledge of macromolecules, analyzing the presence of macromolecules in different meals and will then test for the presence of these. One characteristic of life is that living things are made up of molecules containing carbon. The macromolecules are assembled by joining several smaller units. Testing for simple sugars benedicts solution turns orangebrown in the presence of simple sugars. Biological macromolecules lab cells, the fundamental units of life, are composed of various combinations of organic macromolecules. Organic macromolecules in living organisms can be classified as either carbohydrates, proteins, lipids, or nucleic acids, among others. To test for macromolecules carbohydrates, lipids, nucleic acids, and proteins, iodine solution, alcohol, acetoorcein stain and copper sulfate solution are used. We are to perform 4 tests which will determine if the four macromolecules are present. The unknown may contain one or more macromolecules, or it may contain none at all. Testing for macromolecules in this activity you see how to test types of foods to see if they contain carbohydrates simple vs. In this lab we have conducted five different experiments, testing the effects of different factors to an enzyme called peroxidase.
The indicators that cause these color changes are benedicts, iodine, biuret, and sudan iii. We did so by conducting a series of tests on each solution. To investigate three of the biological macromolecules by testing for the presence of starches carbohydrate, proteins, and lipids in foods. Testing for macromolecules 3 march 2017 to test for macromolecules carbohydrates, lipids, nucleic acids, and proteins, iodine solution, alcohol, acetoorcein stain and copper sulfate solution are used. Students will solve a murder mystery using their knowledge of macromolecules, analyzing the presence of macromolecules in different meals and will then test for the presence of these macromolecules in the evidence sample from. The tests performed were, iodine testing for starch and glycogen, benedicts test for reducing sugars, and the biurets test for protein. Carbohydrates are polysaccharides made of monosaccharide monomers. Bio 1 biological molecules of life lab report educated jess. These macromolecules are large carbon based structures. Scientists then use certain tests to determine the presence of macromolecules. Essay about identification of macromolecules lab report. Lab 3 identifying macromolecules by angela martinez on prezi.
This will be done using three separate tests, but you will be responsible for determining what macromolecule each substance is testing for. Theres no citing for this lab report because it is based on what we did in the lab. Cells, the fundamental units of life, are composed of various combinations of organic macromolecules. In the below experiment, a biuret test has been performed on water, egg. Testing for the presence of macromolecules background carbohydrates, lipids, proteins, and nucleic acids are organic molecules found in every living organism. 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. How to fix testing for macromolecules lab sources of error.
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