Identifying macromolecules in food lab introduction carbohydrates, proteins, and fats are all essential nutrients we cannot manufacture these nutrients so we must obtain them from our environment. 1 a scientific investigation – what types of food contain starch and protein1 in this activity you will learn about starch and proteins and investigate which types of food contain starch and which types contain protein. Updated version 30 2-1-15 page 4 5 10 drops reducing sugar 6 10 drops starch questions: a what type of carbohydrate are you testing for. Bio 3a lab: biologically important molecules page 3 of 12 change in color (the solution remains blue) procedure 1 benedict's test for reducing sugars. Bio lab report- exp 6 - free download as word doc (doc / docx), pdf file (pdf), text file (txt) or read online for free biologically important molecules: carbohydrates, proteins, lipids and nucleic acids. So, starch and cellulose which are polysaccharides have negative result in fehling’s test distilled water is not reducing sugar also shows negative result conclusion: fehling test is the common test which is used to determine the presence of reducing sugar fructose, lactose and glucose are reducing sugars which give brick red precipitate. Proteins are a diverse group of biological molecules they include enzymes that make reactions proceed faster there are structural proteins that make spider webs strong and there are proteins that transport things in cells this laboratory deals with nutritional proteins all proteins are made up of amino acids that are linked together to form a chain. Laboratory 26: carbohydrates benedicts test this tests for reducing sugars free aldehyde groups, -hydroxy ketones and hemiacetals are capable of reducing metal ions.
Biology practical topic 4 molecules of life study play valid scientific experiments which tests for the presence of a type of molecule needed to be carefully. Lab report carbohydrates proteins lipids carbohydrates, proteins, lipids, and nucleic acid lab exercise 6 date: 9/17/12 bio 102-11 purpose the purpose of this. Lab reportannotated ab report the title is a single line and written as a phrase 1 1 the writer includes her name and the name of the instructor 2 the date is. Lab 2: carbohydrates and protein/lipid laboratory 2, ap biology 2011 spurthi tarugu, kavinmozhi caldwell, chelsea mbakwe, radha dave, navya kondeti abstract: almost all living organisms contain four organic compounds, two of which are lipids and proteins lipids are made up of one molecule of glycerol and three molecules of fatty acids.
Analysis: lab 1 identifying carbohydrates there were many ranges of color changes in the benedicts test and iodine stain for the benedicts test, this oxidation/reduction response changes the arrangement of the reducing sugar creating a colored precipitate. All living things contain organic macromolecules: lipids, proteins, carbohydrates and nucleic acids characteristic for these organic molecules is that they are made up of only a small number of elements: carbon, hydrogen, oxygen, and to smaller amounts nitrogen, phosphorus and sulfur.
Lab 2 identify the functional group or molecule for each of the following (3 points) cooh coh coh list whether each of the following substances was positive or negative for reducing sugar, as indicated by the benedict's test. Biuret reagent test is made of sodium hydroxide and copper sulfate and is used for determining the presence of proteins (dna, protein, starch, lipid, or reducing. 2of2 7th lab sugar, protein, and complex carbohydrate tests food test 3: complex carbohydrate (starch) – iodine solution iodine solution is used to test for the presence of complex carbohydrates. Lab report carbohydrates proteins lipids carbohydrates, proteins, lipids, and nucleic acid lab exercise 6 date: 9/17/12 bio 102-11 purpose the purpose of this experiment was to perform test to detect the presence of carbohydrates, proteins, lipids, and nucleic acidsexplain the importance of a positive and a negative control in biochemical test use biochemical test to identify.
Lab report onidentifying biological molecules in reducing sugar starch protein and fat testing for reducing sugars, non-reducing sugars, starch, lipids and proteins in unknown substances: our aim: was to find out which substances from our five samples have reducing sugars present to determine what they may be for example they. Biology 171l – general biology lab i lab 4: biological molecules introduction there are four major classes of organic compounds (macromolecules) which comprise. Carbohydrates serve as energy sources and provide structural support as in the cell wall of plants carbon, hydrogen, and oxygen are the elements found in carbohydrates exercise 1 - benedict's test for reducing sugars benedict's reagent is used as a simple test for reducing sugars a reducing sugar. Results food test food reducing sugars starch lipids protein potato juice from biol 101-103 at liberty university duplicate.
Discussion page 9 of 12 lab reportannotated ab report discussion manipulation of nymes and nymatic processes page 9 of 12 comparison with original hypothesis the presence of reducing sugars would indicate the completion of the enzymatic reaction. Essays & papers testing for reducing sugars, non-reducing sugars, starch, lipids and proteins - paper example.
Question biological macromolecules hands-on labs, inc version 42-0291-00-02 lab report assistant this document is not meant to be a substitute for a formal laboratory report the lab report assistant is simply a summary of the experimentâ€™s questions, diagrams if needed, and data tables that should be addressed in a formal lab report. Conduct a qualitative test for starch, fat, a reducing sugar, a protein protein protein molecules are long chains of amino acids joined by peptide bonds the. This lab report identifying macromolecules in solutions and other 63,000+ term papers as previously stated, starch contains multiple sugar monomer and is joined. Prelab: complete this in your lab notebooks this lab has a different prelab format as it is not an experiment (so no hypothesis or variables. Carbohydrates: reducing sugars and starches reducing sugars some sugars such as glucose are called reducing sugars because they are capable of transferring hydrogens (electrons) to other compounds, a process called reduction when reducing sugars are mixed with benedicts reagent and heated, a reduction reaction causes the benedicts. A reducing sugar is a carbohydrate possessing either a free aldehyde or free ketone functional group as part of its molecular structure recall from lectures that functional groups are the regions of a molecule that gives it particular properties a single molecule can have more than one functional group as part of its structure when a molecule.
Essay/term paper: detection of biological molecules essay, term paper, research paper: biology see all college papers and term papers on biology free essays. Nutrient solutions to be tested (made from foods you wish to test for sugar, starch, protein, fat, and vitamin c content) food test 1: sugar test-benedict's solution benedict's solution is used to test for simple sugars, such as glucose it is a clear blue solution of sodium and copper salts in the presence of simple sugars, the blue. Chemical tests for biologically important molecules do not write on this document introduction the most common and important organic molecules found in living things.