Biologically Important Molecules Carbohydrates‚ Proteins Lipids And Nucleic Acids Professor Anthony Depass Biology 1 9/25/14 Introduction: By completing lab exercise 6 : Biologically Important Molecules‚ we are able to perform tests such as the Benedicts Test for Reducing Sugars‚ Iodine Test‚ Biuret Test‚ Sudan IV Test‚ and lastly the Grease-Spot Test that detect the presence of biologically important carbohydrates‚ protein lipids and nucleic acids. Most known compounds in living organism
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Objective of experiment * The objective of the experiment is to assess the effect of different pH conditions on enzyme activity. Hypothesis * I feel the pH affected the enzyme activity to produce product. Prediction * If the pH affected the enzyme activity to produce product‚ then rate of reaction will change. Procedure * The procedure that we followed was to take two test tubes and label one pH2 and one pH10 and incubate 1 ml of each solution for 30 minutes. Then after 30 minutes
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Osmosis Lab Report by Evan Gerber Claire Cambron First Lab Report Wednesday 10:30am February 20‚ 2013 Theresa Gburek Abstract The major objective of the experiment was to test the effect of the concentration gradient on the diffusion rate. It was hypothesized that the greater the stronger the concentration gradient‚ the faster the rate of diffusion would be. To test this‚ dialysis tubes were submerged in different concentration fructose solutions. We weighed the tubes at specific
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Biology 101 Twelve Principles of Life As we begin studying biology together‚ let me introduce some of the most basic principles of life that guide the flow of our course’s content. You don’t want to memorize a plethora of terms without a conceptual framework in which to retain them! So consider the “Twelve Principles of Life” listed for you here. Read each explanatory sentence that follows each principle. In just five minutes’ time you will have a rich appreciation for what biology is
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Identifying Organic Compounds Joe Harris 11/12/07 1. Background Organic compounds are‚ by definition‚ any chemical compound containing carbon. These compounds include carbohydrates‚ polysaccharides‚ 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
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This is a practice test for biology 101 test 2. You should also review all lectures and practice writing questions for each lecture set. You will also want to take advantage of the test banks under the “Lessons” tab in Angel. In addition to these sample questions and the test banks‚ you are advised to study the diagrams from all chapters and be able to label main structures. 1) The function of the rough endoplasmic reticulum(RER) is: a) Digestion b) Support c) DNA isolation d)
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Who Took Jerell’s iPod? Lab Purpose: Standardized Tests The purpose of testing the organic nutrients (vegetable oil‚ glucose‚ starch‚ powdered egg white) with each of the different indicators (brown paper towel‚ benedicts‚ iodine‚ biurets) was to determine the color it would turn with positive traces of the nutrient. The purpose of testing just the Distilled H2O was to determine the color it would turn with negative traces. Nutrient in the Different Foods The purpose of testing each of the
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test tubes. -grease spot test: A drop of liquid food sample was added to a filter paper and was let to dry for 5 minutes. The filter paper was held up to the light and any translucent spot was observed. The filter paper was put into an organic solvent. it was taken out and let to dry The filter paper was examine against light again. (positive result – translucent spot disappears) -Clinistix paper: A drop of liquid food sample was added to the well of a spot plate The Clinistix
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Destiny Thomas Biology October 19th 2012 Period: 3rd Destiny Thomas October 19th 2012 Biology Period: 3rd Introduction In our experiment we used only the red colored life savers. They all had about the same mass. We used 9 life savers. In our experiment we had to dissolve our life savers. The concept of dissolving is to place the
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Shalacia Gilmore Fall 2012 BIO 1107 Natural Selection Lab INTRODUCTION In the 1850s‚ two scientists by the name of Charles Darwin and Alfred Russell Wallace composed the theory of evolution by natural selection. (1) Darwin characterized several claims needed for natural selection to happen‚ including heritable variation within the population‚ and the presence of more individuals than the environment can support. They also discovered that certain environments favored certain traits. These
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