Test For Sugars, Starches, Proteins, And Lipids - 929 Words

Purpose: The purpose of this lab was to test for sugars, starches, proteins, and lipids. Background information: Biological macromolecules are the large molecules necessary for life. There are four different types of macromolecules which include carbohydrates, lipids, proteins, and nucleic acids. Each macromolecule has a specific function like providing energy or simply insulation. Macromolecules are made from monomers which come together through dehydration synthesis or hydrolysis to create the polymer or macromolecule. Carbohydrates are made from monosaccharides which are shaped like hexagons and come together to make polysaccharides which provide quick energy, structural support for plants (cellulose in cell walls) and are also found as chitin in the exoskeletons of arthropods. Lipids are made from glycerol and three fatty acids and are found in two different forms-unsaturated and saturated. Lipids provide long term energy storage, insulate and cushion, and prevent water loss. Proteins are made from amino acids which come together forming a protein with peptide bonds. Proteins serve as hormones, muscle, parts of the immune system, and enzymes but if they are the wrong shape, they can t do their job. Nucleic acids are made from nucleotides and serve as DNA and RNA which store genetic info and transfer info to make new cells. When conducting this experiment, certain safety precautions must be taken. Proper protective gear must be worn including goggles and closed-toedShow MoreRelatedEssay on Identifying Nutrients939 Words   |  4 Pagescarbohydrate, disaccharide, lipid, monosaccharide, polysaccharide, protein, starch Prior Knowledge Questions (Do these BEFORE using the Gizmo.) 1. What are the major types of nutrients you can get from food? Proteins, lipids, carbohydrates, minerals and vitamins 2. How are these nutrients used by your body? Nutrients are used by your body for everyday functions. Gizmo Warm-up Have you ever wondered what is in your food? Scientists use a variety of tests to determine the nutritionalRead MoreIdentifying Organic Compounds Lab Report Essay744 Words   |  3 PagesPurpose: To use indicators to test for the presence of organic compounds in certain substances. Hypothesis: Honey will contain sugars, egg white contains proteins, corn oil contains lipids, oats contains starches and proteins, gelatin contains sugars and proteins, potatoes contain starch, and apple juice contains lipids and sugars. Materials: 9 test tubes Test tube rack Test tube holder Grease pencil Hot plate 20 ml honey solution 20 ml egg white and water mixture 20Read MoreChemical Composition Of Cells Lab Report1200 Words   |  5 Pagesbuilding block of all living organisms, is composed of four fundamental biomolecules: proteins, carbohydrates, sugars and lipids. Proteins provide a vast amount of functions cells such as they serve as enzymes, provide structural support to cells, and act as antibodies. Reagents are used to spark a chemical reaction. The reagent used to detect protein traces in a substance is Biuret’s. Biuret’s will turn purple if proteins are present and blue if they are none. Biuret’s copper particles, have a chargeRead MoreAction Of Digestive Enzymes : The Digestive System1531 Words   |  7 Pagesmouth. As we take food (Starch, protein, lipids) into our mouths we start the process with chewing which is a mechanical breakdown then salivary amylase which is in saliva combines with the chewed food. We then swallow forcing the food into the esophagus, where peristalsis the involuntary squeezing and relaxing of muscles propel food down to the stomach. When salivary amylase from the mouth reaches the stomach it starts to break down the carbohydrates into simple sugars. Once into the small intestineRead MoreChemistry : The Chemistry Of Life1165 Words   |  5 Pageswas to test for macromolecules consisting of starch (carbohydrates), lipids, proteins, and nucleic acids. Testing for the macromolecules occurred by using specific reagents on each macromolecule. If a color change occurred, then the sample would prove to be positive for that macromolecule. For simple sugars, the Benedicts solutions was used as the reagent; for starches, the iodine solution was used as the reagent; for lipids the Sudan III solution was used as the reagent; and for the proteins, theRead MoreQualitative Food Tests1585 Words   |  7 PagesFood Tests Aim: To test an unknown substance for various food substances. Apparatus/Materials: * Unknown Solution X * NaOH * Iodine * Ethanol * Copper Sulphate * Benedict’s Solution * HCl * Cold Water * Syringe * Beakers * Bunsen burner * Tripod stand * Test tubes * Dropper Introduction: This Lab shows the detection of different food sources using different tests. Some of the food tests carried out was Benedict’s test, the testRead MoreAn Experiment for Staying Healthy with the Food We Eat2561 Words   |  10 Pagestesting for are monosaccharides, starches, proteins and lipids. It is because the purpose of the lab is to test for multiple macromolecules that the inquiry and testing process will be split into four independent tests for the presence of each respective molecule. - Testing for monosaccharides with Benedicts reagent will be referred to as Test 1 - Testing for the presence of lipids with the Blotth test will be referred to as Test 2 - Testing for the presence of starches in the unknown solution withRead MoreIdentifying Macromolecules in Common Foods2202 Words   |  9 Pagescomplex carbohydrates (sugars and starch), lipids, and proteins. The foods tested were coconut milk, karo syrup, potato chips, peanut butter, and banana baby food. We hypothesized that coconut milk would contain all four types of macromolecules, karo syrup would only contain simple sugars which are monosaccharides and/or disaccharides, potato chips would contain starches and fats, peanut butter would contain sugars, fats, and proteins, and banana baby food would consist of sugars and starch. Each macromoleculeRead MoreOrganic Compounds Lab Report Essay703 Words   |  3 Pagespolysaccharides, lipids, proteins, and nucleic acids. Each one of these compounds has a different purpose. Carbohydrates give energy to cells when consumed. Lipids are basically the fats of a cell. Proteins are the building blocks of muscle in a cell. Nucleic acids are used to transfer genetic information from one cell to the other. The purpose of this lab is to simply determine the absence or presence of the main chemical content of a given substance. In previous labs, there were tests with three chemicalsRead MoreChemical Aspects of Life and Spit Lab Formal Report2432 Words   |  10 Pagesthe Reducing Sugar Test was to test if the substance has a reducing sugar in it by adding Benedict’s solution and heating it, there would be a color change if a reducing sugar is present, or it will remain blue (no reducing sugar). The objective of the Starch test was to test for starch in substances by using Iodine. The iodine will cause a substance to turn to a dark blue color if it is positive for starch. The objective for the Grease Spot Test was to test if the substance had a lipid. A positive