Aim: 1) To determine the effects of different salt concentration on the percentage of weight change in potato cubes 2) To determine the isotonic solution concentration for the potato Hypothesis: 1) If the concentration of the salt solution is higher than the concentration in the potato cubes‚ the percentage of weight change in potato cubes will be higher (positive). If the concentration of the salt solution is the same as the concentration in the cell‚ there will be no net movement of water through
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that live in the water‚ their oxygen has to be obtained from the water. The amount of oxygen that these organisms can take from the water is hugely dependent on the dissolved oxygen content in the water. The purpose of the two experiments done in this lab was to see the ideal condition to produce the most dissolved oxygen concentration. We approached the challenge of finding the ideal condition by testing two different variables in two different experiments. In the first experiment‚ we tested the different
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Part I: Pre-Lab Diffusion/Osmosis Pre-Lab Introduction: Dialysis tubing allows molecules to diffuse through microscopic pores in the tubing. Molecules that are smaller than the pores can diffuse through the dialysis membrane along the concentration gradients. Molecules that are larger than the pore size are prevented from crossing the dialysis membrane. Answer questions in complete sentences. For problems‚ show equations and work with units and appropriate significant figures. Part IA: In the following
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The reactions and Results of Using Enzyme Turnip Root Peroxidase Lab results from: Andrew Compton‚ Mickey. Results published 9/29/2012. TA: In this series of laboratory experiments‚ my lab partner and I were to conduct an experiment about the oxidation rate of the enzyme peroxidase in the presence of its substrate guiacol. Also we used other substrates‚ such as hydroxylamine an enzyme inhibitor‚ to observe the weather the reaction rate was slowed down‚ sped up‚ or stopped reactions all together
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and Material: Funnel 4 test tubes Cups Sugar Water Yeast Knife Ruler Balloon Marker Tape Method: 1) Put tape on each test tube and label them‚ 0%‚ 1%‚ 5% or 10%. 2) Fill up water in each cup. 3) Add 10 ml of water in each test tube 4) For the test tube labeled 1%‚ add 0.1 ml of sugar. 5) Add 0.5 ml of sugar in the 5% test tube. 6) Add 1 ml of sugar in the 10% test tube. 7) Put thumb on top and shake each test tube well so everything is dissolved 8) Add 0.5 ml of yeast in each
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TITLE AND AUTHOR Lab 7 Analysis of purified Concanavalin A via:Hemagglutination INTRODUCTION The purpose of this lab was to test the biological activity of ConA by performing a hemagglutination assay. If ConA is active then agglutination will occur due to ConA’s free receptors being able to bind to the glucose residues on the sheep’s red blood cells. If ConA is not active then no agglutination will occur. To test the hemagglutination reaction‚ two types of ConA solutions
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supplied meat (provide name of meat): Catalase present? Yes/No (1 point): List the pH for each substance tested. (5 points) vinegar (1 point) shampoo (1 point) lemon juice (1 point) distilled water (1 point) baking soda (1 point) What was the purpose of using water as a sample in some of the tests performed in the lab? (2 points) Four unknown samples were included in the lab kit: flax seed meal‚ potato starch‚ egg whites‚ and dried milk. Using the results of the biochemical testing‚ determine
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Plant Pigments and Photosynthesis Problem: We are going to separate and identify pigments and other molecules from cell extracts through a process called chromatography. We will also test the theory that light and chloroplasts are required for light reactions to occur. Background: Pigments are chemical compounds which reflect only certain wavelengths of visible light. This is what makes them seem colorful. Many things contain pigments including flowers‚ corals‚ and even skin. More important than
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II. Genetic variation is accounted for in Meiosis I due to crossing over. No formal hypothesis was made due to the fact that this lab was a simulation and observation of prior knowledge. The lab did not go as expected for prophase was supposed to be the second longest phase in exercise 3A but Metaphase ended up with the higher percentage (Table 3.1). Because this lab was solely based on observation‚ there was little space for error‚ but as mentioned above‚ metaphase ended up with the higher percentage
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purpose without the prior written consent of The McGraw-Hill Companies‚ Inc.‚ including‚ but not limited to‚ in any network or other electronic storage or transmission‚ or broadcast for distance learning. Acid-free paper 1 2 3 4 5 6 7 8 9 0 QPD/QPD 0 3 2 1 0 ISBN 0-07-282957-5 www.mhhe.com ii CONTENTS PREFACE......................................................................................................................................................................................
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