AndrewGuerrero BIO 125 Lab Due November 14‚ 2012 Practical Exam 1. a. The symbionts (Paramecium) of the termite belong to the kingdom Protista b. Paramecium living in the intestines of termites breaks down the cellulose walls of wood fibers releasing proteins that are absorbed by the termites’ digestive system. Paramecium benefit by having an environment to thrive and they ingest the wood fibers for their own nutrition as well. 2. c. An important ecological effect
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milk Introduction Enzymes are globular protein‚ responsible for most of the chemical activities of living organisms. They are made up of long chains of amino acids containing carbon‚ hydrogen‚ oxygen and nitrogen (Gunsch‚ 2012). The role of enzyme is to act as catalysts‚ substances that speed up chemical reactions without being chemically altered during the process. The speeding up of chemical reactions is done by lowering the activation energy required to start a reaction. Enzymes are specific in
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too long (shriveling is a common misconception)‚ a tea bag’s contents diffuse through the water. These are all examples of diffusion and osmosis. These phenomena happen everyday and people don’t realize what is actually happening. The purpose of the lab is to see the effects of diffusion and osmosis. In part B‚ the higher the concentration of solute‚ the higher the mass of the solution. Methods and Materials: For part A of the experiment‚ the following items are needed: Dialysis tubing‚ IKI solution
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Jong Choi A.P. Biology Ms. Lia Krieg Table 8.1: Phenotypic Proportions of Tasters and Non-tasters and Frequencies of the Determining Alleles | Phenotypes | Allele Frequency Based on the H-W Equation | | Tasters (p2+2pq) | Non-tasters(q2) | P | q | Class Population | # | % | # | % | 0.57 | 0.43 | | 13 | 81.25 | 3 | 18.75 | | | North American Population | 0.55 | 0.45 | 0.33 | 0.67 | Topics for Discussion 1. What is the percentage of heterozygous tasters (2 pq) in your class
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Biology EEI Effect of Inorganic and Organic Fertilisers on Yield and Growth of Tomatoes By Yash Teacher: Mrs. Elphick TABLE OF CONTENTS Abstract................................................................................3 Introduction..........................................................................4 Materials and Methods.........................................................6 Contents of fertilisers...........................................................6 Procedure....
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Enzymes Enzymes are… * Biological catalysts Lower the energy level needed for a biochemical reaction to occur. This energy level is called activation energy. * Proteins Polypeptide chains made up of 100’s-1000’s of amino acids in a specific sequence. * Do not get “used up” in a reaction The number of “uses” of an enzyme depends on the enzyme. * Work more efficiently at certain optimum temperatures. * They are “reaction-specific”. Each enzyme is included in one reaction.
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Enzymes All enzymes are globular proteins and round in shape They have the suffix "-ase" Intracellular enzymes are found inside the cell Extracellular enzymes act outside the cell (e.g. digestive enzymes) Enzymes are catalysts → speed up chemical reactions Reduce activation energy required to start a reaction between molecules Substrates (reactants) are converted into products Reaction may not take place in absence of enzymes (each enzyme has a specific catalytic action) Enzymes catalyse
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Procedures for Part A: For Activity A‚ we first tested enzyme activity. First‚ we used an H2O2 syringe to transfer 10 mL of H2O2 into an unlabeled 60-mL cup. Then‚ we used a transfer pipet to add one mL of catalase solution into the unlabeled 60-mL cup that we put H2O2 in. After that‚ we observed the solution for one minute. Then we tested the effect of boiling on enzyme activity. First we used a transfer pipet to transfer 4 mL of catalase into a test tube. After that‚ we placed the test tube filled
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SPM Biology – Paper 3 (2003 – 2012) www.sureshkumarbio.wordpress.com 2003 Q1: To study the effect of camouflage on a predator-prey relationship [F4-Chapter 8] Q2: To study the relationship between the concentration of CO2 and the rate of photosynthesis [F4-Chapter 6] 2004 Q1; To determine the % of vitamin C in fruit juices using DCPIP solution [F4-Chapter 6] Q2: To estimate the size of the bird population [F4-Chapter 8] 2005 Q1: To determine and compare the energy content in white bread
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Enzyme Catalase What Factors Affect Enzyme Activity Michelina Bartolotto Lab Biology 111B February 2‚ 2014 /media/common.studymode/studymode-upload/stm/files/e1b9a3d6adf94ca848b12159c31f11b0.docx INTRODUCTION Enzymes are proteins that function as biological catalysts (Perry‚ Morton 2007). They maintain the body’s stable internal balance‚ and without them life would
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