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    Biology Lab Report

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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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    Biology Lab Report

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    tubes 2) Boiling water bath 3) Microscope 4) Slides and cover slips 5) Pasteur pipettes MATERIALS: 1) pH test strips 2) Benedict’s reagent PROCEDURES: Collect the urine samples in a container. Make sure to not spill anywhere in the lab. Complete the tests and all results/ observation are in a proper table. (A) Observation of urine 1) The urine is sniffed and the description of the urine is described. Terminologies like slightly nutty‚ sweet/ fruity or pungent can be used

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    Lab report nº4 The aim of this experiment was to observe the change of enzyme reaction with different concentration of solution. For this experiment we used potato enzymes (catalase) and hydrogen peroxide in concentrations of 100%‚ 80%‚ 60%‚ 40%‚ and 20% According to P.George: “When catalase is added to hydrogen peroxide‚ there is an initial rapid evolution of oxygen which lasts for about two minutes‚ depending on the peroxide concentration. After this‚ oxygen is given off at a steady rate which

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    Biology Lab Report

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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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    Enzyme Lactase Lab Report

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    Discussion The primary purpose of this experiment was to determine the optimum temperature range for the activity of the enzyme lactase. Extreme temperatures can have a detrimental effect on enzymes; very hot temperatures can cause the denaturation in the enzyme‚ which is the loss of protein structure. This causes a change in the shape of the enzyme leading to its inability to perform its function. As previously stated‚ the alternate hypothesis read: the optimal temperature range for lactase activity

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    Affect of enzyme concentration to the rate of reaction Aim: With the experiment of protein solution‚ in this case egg white added to different pepsin concentrations (0%‚ 0.2%‚ 0.4%‚ 0.6%‚ 0.8%‚ 1.0%) shows‚ as the egg white is a protein and the pepsin works as an enzyme‚ how a higher pepsin concentration and therefore a larger amount of enzymes effect the rate of reaction. Hypothesis: An increased concentration of pepsin speeds up the time the mixture needs to come clear. Introduction:

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    Enzymes are biological molecules (proteins) that act as a catalyst and help complex reactions occur everywhere in life‚ for example a piece of steak that is being digested into energy. Molecules found at the beginning of the process are called substrates‚ and these enzymes exchange them into differing molecules known as products. Nearly all-metabolic processes in a cell need enzymes in order to function at rates that are fast enough to sustain existence. Those who are lactose intolerant are simply

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    The environmental factors that effected the rate of enzyme reactions were the enzyme concentration‚ pH‚ and temperature. These environmental factors help enzymes break down the poisonous chemicals into harmless substance. When we tested the liver with 2ml of hydrogen peroxide for a normal reaction it showed that it was exothermic. We added more hydrogen peroxide and the reaction rate of the liver was 3. We learned that the catalase is reusable because the liver reacted both times when we put in

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    Enzyme Lab

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    Enzyme Lab Marcus James. December 20‚ 2013 HL Biology 3 Period 1 Purpose and Background The purpose of this lab is to explain how enzymes act as catalysts for biological reactions in different temperatures. This lab relates to enzymes‚ proteins‚ and substrates; that we learned in class. The union of the enzyme and the substrate is called the enzyme-substrate complex. The make-up of an enzyme is proteins and made up of chains and amino acids. Enzymes

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    I. Title. Restriction Enzyme Mapping of pBR322 Using Agarose Gel Electrophoresis. II. Authors. Author: Partner: Section: Thursday‚ 1:10 pm Date of Experiment: October 25‚ 2012 III. Introduction. Restriction enzymes (or restriction endonucleases)‚ originally isolated from Haemophilus influenzae in 1970‚ are enzymes within a cell that cleave foreign DNA within a specific and predictable nucleotide sequence (known as a restriction site) regardless of the source of such DNA. Such restriction

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