"What Happens To The Initial Reaction Rate As Substrate Concentration Increases" Essays and Research Papers

What Happens To The Initial Reaction Rate As Substrate Concentration Increases

Enzyme-Controlled Reaction Procedure: Click the TV/VCR. Then click the Play button on the video controller. Watch an animation about enzyme action. Click More Information to read about enzymes and substrates. To conduct the experiment: Adjust the pH level of the test tube by click the up and down arrows Add substrate to each of the test tubes that already contain an enzyme solution Click and drag a piece of weighing paper with the powdered substrate to a test tube. Click the computer monitor to...

Catalysis, Enzyme, Enzyme substrate 470  Words | 3  Pages

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Enzyme concentration affects the rate of reaction

Hypothesis: I hypothesis that the enzyme concentration will affect the rate of reaction but only up until a certain point because there is a limited supply of substrate. Enzymes are protein molecule that acts as biological catalyst by increasing the rate of reactions without changing the overall process. They are long chain amino acids bound together by peptide bonds. Enzymes are seen in all living cells and controlling the metabolic processes in which they converted nutrients into energy and...

Catalysis, Chemical reaction, Enzyme 865  Words | 4  Pages

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How Enzyme Concentration Can Affect Rate of Reaction

How Enzyme Concentration can Affect Rate of Reaction The purpose of this investigation was to see how the concentration of an enzyme affected the rate at which a substance was broken down. We did this by using a white protein called casein. Casein is found in milk powder, it is a protein and used mainly as a binding agent in foods, because it is mad to proteins and joins to a phosphoric acid it belong to a group called the phophoproteins. In terms of in milk it is said to be healthier if it is...

Acid, Amino acid, Catalysis 857  Words | 4  Pages

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The Effect of Increasing Substrate Concentration on Rate of an Enzyme Reaction

The effect of increasing substrate concentration on rate of an enzyme reaction. Enzymes are biological catalysts that lower a reactions activation energy making possible many of the reactions needed for life to exist.  Enzymes have a high specificity which have been explained by many theories such as Fischer’s lock and key. Currently the most widely accepted theory is the induced fit hypothesis proposed by Koshland in 1958. This hypothesis solves some of the problems with the Lock and key theory...

Alpha 1-antitrypsin, Alpha 1-antitrypsin deficiency, Catalysis 1266  Words | 4  Pages

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Enzyme Controlled Reactions Lab Exercise 2 1

 r Virtual Lab: Enzyme Controlled Reactions Instructions 1. Go to the following web-link in order to open the Virtual Lab: http://www.mhhe.com/biosci/genbio/virtual_labs_2K8/labs/BL_02/index.html 2. Open the Virtual Lab: Enzyme Controlled Reactions 3. The virtual lab simulation will be on the right side of the screen, and the “Question” column will be on the left side of the screen. 4. Click the monitor in the lab simulation to watch a video about enzyme action. 5. Click the “Information”...

Catalysis, Chemical equilibrium, Chemical reaction 954  Words | 4  Pages

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Effect of an Increasing Substrate Concentration on Enzyme Activity Rate

ID:0720052 Effect of an Increasing Substrate Concentration on Enzyme Activity Rate Abstract The reaction rate of an enzyme can be affected by many factors, and the purpose of this experiment was to find out how an increasing substrate concentration influences the rate of an enzyme activity; we obtained data from recording the absorbance of the samples which contain the same amount of potato juice (enzyme oxidase) and different amount of catechol (substrate) while holding pH and temperature constant...

Buffer solution, Catalysis, Chemical equilibrium 1007  Words | 4  Pages

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Reaction Order and Rate Law

Reaction Order and Rate Law Name Data, Calculations, and Questions A. Calculate the initial and final concentrations as needed to complete Tables 1 and 2. Data Table 1: Varying the Concentration of 1.0 M HCl | | | | |Concentrations | | |# Drops |# Drops |# Drops |Initial ...

Chemical kinetics, Chemical reaction, Mathematics 459  Words | 3  Pages

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Substrate concentration and yeast catalase

Substrate concentration and yeast catalase Aim: To see how the substrate concentration in hydrogen peroxide affects the rate of an enzyme controlled reaction using yeast catalase. Introduction: An enzyme is a biological catalyst made of protein. Enzymes are protein molecules found in living organisms and in this case I will use a yeast catalase. Catalase is an enzyme that catalyzes the reduction of hydrogen peroxide. Hydrogen peroxide is a poisonous by-product of metabolism, so it is very...

Catalase, Catalysis, Enzyme 1602  Words | 7  Pages

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The Effect of Substrate Concentration on the Rate of Reaction

were accurate, I made sure I accurately measured out the amylase and starch solutions for each experiment. This is because, if I had the wrong amounts, I would not get a valid conclusion, as I will not know whether my results are affected by the concentration of starch, or whether the results I got were due to the amounts of solution used. This would make both my results and conclusion invalid and unreliable. I also made sure that the temperature of the water bath was at the correct temperature and...

10, Green Line, Harshad number 1160  Words | 7  Pages

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The Effect of Concentration on Reaction Rate

The Effect of Concentration on Reaction Rate Aim: To use a simple reaction between sodium thiosulphate and hydrochloric acid to discover concentration this determines how fast chemical reactions occur. Independent Variable: Concentration of hydrochloric acid (%) Dependent Variable: Time taken for chemical reaction to take place (sec) Hypothesis: My prediction is that the increased concentration of the thiosulfate will in turn lead to an increase in the rate of reaction. This is a well...

Chemical reaction, Chemistry, Chlorine 874  Words | 3  Pages

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Effect of Substrate Concentration on the Rate of Reaction of Calase

Lab Partner: _____________________________________________________________________ Investigating Factors that Affect the Rate of Enzyme Activity See Textbook Pg 61. Enzymes are very large complex organic molecules that are synthesized by the cell to perform specific functions. These biological catalysts are important because they speed up the rate of the reaction that would otherwise be too slow to support life. Catalase is an enzyme present in the cells of plants, animals and aerobic (O2...

Catalase, Catalysis, Enzyme 820  Words | 4  Pages

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How does the concentration affect the rate of a reaction?

 How does the concentration affect the rate of a reaction? 30/1/2012 By Alex Whenman Contents page 1. Introduction to my investigation 2. Background information on concentration 3. What experiment I will be conducting 4. Equipment I will be using 5. How I will be conducting the experiment 6. Heath and safety risk assessment 7. What I think will happen 8. How I will set up my experiment 9. Why I’m having...

Affect, Chemical reaction, Chemistry 756  Words | 3  Pages

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The Effect of Substrate Concentration, Enzyme Concentration, Ph and Temperature on Enzyme Activity”

Title: “The Effect of Substrate Concentration, Enzyme Concentration, pH and Temperature on Enzyme Activity” Abstract: In the following experiments we will measure precise amounts of potato extract as well as Phenylthiourea, combined with or without deionized water and in some instances change the temperature and observe and record the reaction. We will also investigate the different levels of prepared pH on varying samples of the potato extract and the Phenylthiourea and record the results....

Acid dissociation constant, Buffer solution, Carbonic acid 1379  Words | 5  Pages

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What Effect the Concentration of Acid Has on the Rate of Reaction

The Effect of concentration on the rate of reaction Aim The aim of this experiment is to find out what effect concentration has on a rate of reaction. Prediction I predict that the higher the concentration of the acid, the faster the reaction will take place, this is because when there is a higher concentration, to a certain extent, there is more particles, so the higher the concentration of acid, the more particles there would be, so these particles will have more chance of colliding...

Chemical reaction, Chemistry, Chlorine 529  Words | 3  Pages

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Enzyme Substrate Complex

Velocity. Enzyme is the fastest known catalyst. They increase the velocity and rate of reactions in living cells. Diverse range of proteins works as enzyme with their specific temperature point, pH etc. Enzymes react with the molecules known as substrates. Binding site of an enzyme and a substrate is known as active site. The amount of enzyme present in a reaction is measured by the activity it catalyzes. The relationship between activity and concentration is affected by many factors such as temperature...

Catalysis, Chemical kinetics, Chemical reaction 1501  Words | 5  Pages

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Rates of Reaction

Rates of Reaction Affected By Concentrations of a Substrate. Darian Naill September 19, 2011 Swanson AP Biology Introduction An enzyme is a protein molecule that helps other organic molecules start chemical reactions with one another; however, the enzyme itself is not affected by the reaction. A substrate is the substance acted upon by the enzyme. In this lab, catalase is the enzyme and hydrogen peroxide is the substrate. Catalase is found in both plant and animal tissues, and is abundant...

Chemical reaction, Chemistry, Hydrogen peroxide 820  Words | 3  Pages

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What!!!?

Submitted: May 10, 2013 Experiment # 7 Enzyme Activity Objectives: 1. Associate the presence of enzymes with the catalysts of the chemical reaction in living cells. 2. Determine the effect of enzyme concentration, substrate concentration, temperature, pH and heavy-metal salts upon the activity of salivary amylase. Results: A. Enzyme Concentration Test tube | Drops of Enzyme | A-1 Starting Time | A-2Time Blue Color Fades | A-3Time for Starch Hydrolysis | 1 | 1 | 9:07 am | 9:42 am |...

Amylase, Catalysis, Chemical reaction 1119  Words | 5  Pages

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Effect of Concentration on Reaction Rate

RESULTS AND DISCUSSION REPORT—EXPERIMENT 3 (CHEMICAL KINETICS) CALCULATIONS Effect of Concentration on Reaction Rate [S2O32-]initand [H+]init for each run, knowing the original concentrations and volumes of [S2O32-], [H+], and water used. [S2O32-]init= __(M[S2O32-])(V[S2O32-])__ [H+]init= _____(M[H+])(V[H+])____ V[S2O32-]+V[H+]+V[water] V[H+]+V[S2O32-]+V[water] Run 1 [S2O32-]init= (0.15 M)(10 mL) (10+3+2)mL = 0.1 M [H+]init= (3 M)(2...

Chemical kinetics, Chemical reaction, Collision theory 812  Words | 5  Pages

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Effects of Temperature, Ph, Enzyme Concentration, and Substrate Concentration on Enzymatic Activity

Effects of Temperature, pH, Enzyme Concentration, and Substrate Concentration on Enzymatic Activity INTRODUCTION Enzymes, proteins that act as catalysts, are the most important type of protein[1]. Catalysts speed up chemical reactions and can go without being used up or changed [3] Without enzymes, the biochemical reactions that take place will react too slowly to keep up with the metabolic needs and the life functions of organisms. Catecholase is a reaction between oxygen and catechol [2]...

Base, Buffer solution, Catalysis 2348  Words | 7  Pages

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How the Concentration Affects the Rate of the Reaction

experiment to investigate how the concentration of an acid affects the rate of the reaction. I have set up the experiment’s equipment as shown on figure 1. As you can see by figure 1, I have used the reaction between sodium thisoulphate solution and hydrochloric acid (HCL) to come up with results that will help me draw conclusions regarding the effects of the concentration of the acid. I decided to use this particular reaction due to the fact that the product of the reaction between sodium thisoulphate...

Chemistry, Chlorine, Concentration 2031  Words | 7  Pages

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Factors Effecting Rate of Reaction

What is meant by ‘rates of reaction’? The rate of reaction or speed of reaction for a reactant or product in a particular reaction is how fast or slow it takes for a reaction to occur. For example, the oxidation of iron is a slow reaction which can take many years, however the combustion of butane in a fire is a reaction that takes place in fractions of a second. Factors effecting rates of reaction Factors can change the rate (or speed) in which a reaction takes place; this can result in making...

Chemical kinetics, Chemical reaction, Gas 1053  Words | 4  Pages

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The Effect of Temperature on the Rate of an Enzyme Catalysed Reaction

of the many chemical reactions involved in the metabolism of living organisms Enzymes are classified into several broad categories, such as hydrolytic, oxidising, and reducing, depending on the type of reaction they control. Hydrolytic enzymes accelerate reactions in which a substance is broken down into simpler compounds through reaction with water molecules. Oxidising enzymes, known as oxidises, accelerate oxidation reactions; reducing enzymes speed up reduction reactions, in which oxygen is removed...

Catalase, Catalysis, Chemical reaction 1770  Words | 7  Pages

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Varying Effects of Enzyme Concentration on Reaction Rates of Malate Dehydrogenase

VARYING EFFECTS OF ENZYME CONCENTRATION ON REACTION RATES OF MALATE DEHYDROGENASE CELL BIOLOGY 13 NOVEMBER 2007 Enzymes are biological catalysts. They are proteins that speed up reactions with low concentrations. These enzyme proteins are made up of linkages of amino acids. The links coil, and coil again forming a tertiary structure. This structure has a groove in it called an active site. The active site is...

Active site, Adenosine triphosphate, Catalysis 1156  Words | 4  Pages

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Investigating the Effect of Enzyme Concentration on the Rate of an Enzyme-Catalysed Reaction.

Aim: This experiment will aim to show how the amount of substrate affects the rate of the reaction. Hypothesis: In this experiment I think the amount of substrate will simply increase the reaction. As I increase the surface area of the potato the gas given off from the reaction will increase. Therefore to sum things up, my hypothesis is when the Independent variable increases so will the dependant variable. Independent variable: - Surface area of potato Dependant variable: - Gas Controlled...

Chemical reaction, French fries, Measurement 671  Words | 3  Pages

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Rate of Reaction - Chemistry

reaction rates and concentration (research paper) By katie prestage what are reaction rates? The rate of reaction is the speed in which a reaction takes place. This can be measured by the rate in which a reactant is used up, or the rate a product is created. If a reaction has a low rate, it means that the particles are combining at a slow speed. If the rate is high, it means that the particles are coming together at a fast speed. For example, the rusting of iron through oxidation has a slow...

Chemical kinetics, Chemical reaction, Collision theory 927  Words | 4  Pages

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The Effect of Substrate Concentration on the Activity of the Enzyme Catalase

Effect Of Substrate Concentration On The Activity Of The Enzyme Catalase A Level Biology Project Aims This is an experiment to examine how the concentration of the substrate hydrogen peroxide affects the rate of reaction of the enzyme catalase. Background Information Enzymes such as Catalase are protein molecules which are found in living cells. They are used to speed up specific reactions in the cells. They are all very specific as each enzyme just performs one particular reaction. Catalase...

Catalase, Chemical reaction, Enzyme 1935  Words | 6  Pages

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The Effect of Substrate Concentration on the Enzyme Amylase

effect of substrate concentration on the enzyme amylase INTRODUCTION: Enzymes are perhaps one of the most important proteins of the human body. Enzymes such as amylase, an enzyme that breaks down carbohydrates, work by means of surface catalysis. In other words, the surface of the enzyme enables other molecules to react in a manner they would not be able to without the surface of the enzyme present. Enzymes achieve this by lowering the amount of activation energy needed for anabolic reactions, allowing...

Amylase, Catalysis, Chemical reaction 1336  Words | 4  Pages

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Nacl Affects on Enzymatic Reaction

The Effects that 1%, 4%, and 16% Sodium Chloride (NaCl) Concentration Had on the Rate of Reaction of Catecholase Enzymes in a Potato (Solanum tuberosum). Abstract Enzymes are a key component of a cell. They make chemical reactions happen faster because they lower the activation energy to make the chemical reaction occur. Most of the time, it is best if enzymes produce as efficiently as possible, but in some cases it is better if they do not, when dealing with potatoes (Solanum tuberosum). ...

Catalysis, Chemical reaction, Chemistry 1453  Words | 4  Pages

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Enzyme Controlled Reactions

Virtual Lab: Enzyme Controlled Reactions Worksheet 1. Which of the following does NOT apply to an enzyme: Inorganic 2. When an enzyme catalyzes a reaction: Substrate(s) bind in the active site 3. Which of the following would interfere most with the ability of an enzyme to catalyze a reaction? Reduced concentration of substrate available 4. Feedback mechanisms regulate the rate of enzyme activity, effectively “turning off” an enzyme...

Catalysis, Chemical equilibrium, Chemical reaction 497  Words | 3  Pages

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The Rate of Reaction When Different Concentrations

investigating how the rate of reaction differs when we change the concentration of Hydrochloric Acid whilst reacting with Magnesium. The rate of reaction is explained by the Collision Theory. This theory explains how various factors affect the reaction rates and how chemical reactions occur. The 4 factors of the Collision Theory are: • Temperature • Concentration • Surface area • Catalyst I am investigating how different concentrations of acids affect the rate of reaction. However I must control...

Chemical kinetics, Chemical reaction, Chlorine 1912  Words | 5  Pages

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Rate Equation and Order Reaction

For the overall hypothetical reaction A + 5B ---> 4C the rate of appearance of C given by may also be expressed as: A. B. C. D. 2. For the reaction 4 NH3(g) + 5 O2(g) ---> 4 NO(g) + 6 H2O(g), the value of -[NH3]/t = 2.6 x 10-3 M/s at a particular time. What is the value of -[O2]/t at the same instant? A. 1.3 x 10-2 M/s B. 2.08 x 10-3 M/s C. 2.6 x 10-3 M/s D. 3.25 x 10-3 M/s E. 520 M/s 3. What is the overall order for the following reaction between acetone and iodine...

Chemical kinetics, Chemical reaction, Chemistry 951  Words | 4  Pages

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Determination of the Activation Energy of an Enzyme Catalysed Reaction

Determination of the activation energy of an enzyme catalysed reaction Introduction In this practical the aim for this experiment was to find out the catalytic power of alkaline phosphate, as well as the rate of reaction and the activation energy of p-nitrophenol phosphate. Enzymes are biological molecules that catalyse a chemical reaction. ‘Enzymes work by lowering the activation energy of a chemical reaction making it easier to proceed’ [1]. This allows molecules to have more energy therefore...

Catalysis, Chemical reaction, Chemistry 953  Words | 3  Pages

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Rate of Reaction of Peroxodisulphate-Iodide Affected by Concentration and Temperature

Introduction The purpose of this experiment was to determine the rate law graphically from the rate of disappearance and the x y values also the specific rate constant (k). Activation energy was also determined, and the effect of catalyst was evaluated in the reaction between peroxodisulphate ion S2O82-, and iodide ion, I-. S2O82-(aq) + 3 I-(aq) --> 2 SO42-(aq) + I3(aq) The general expression for the rate law, given this overall reaction, is: rate of disappearance of S2O82- = k[S2O82-]m[I-]n Chemical...

Activation energy, Chemical kinetics, Chemical reaction 1532  Words | 5  Pages

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The Effect of the Concentration of Sulphuric Acid on the Reaction Rate with Magnesium

The Effect of the Concentration of Sulphuric Acid on the Reaction Rate with Magnesium Sarah Cain SCH 4UB Mr. Lankin April 1, 2009 Introduction The nature of the problem is to design an investigation that examines a variable affecting the reaction rate. In this experiment, magnesium will be reacted with different concentrations of sulphuric acid. The reaction is shown by the following chemical equation: H2SO4 (l) + Mg (s) → MgSO4 (aq) + H2...

Carbon, Chemical kinetics, Chemical reaction 1915  Words | 7  Pages

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Reaction Rate and Rate Law

PM, 25 April 2000 NAME 1. [10 points] What are the concentrations of HSO− , SO2− , and H+ in a 0.20 M KHSO4 solution? (Hint: 4 4 H2 SO4 is a strong acid; Ka = 1.3 × 10−2 for HSO− .) 4 2. [15 points] Calculate the pH of 1.00 L of the buffer 1.00 M CH3 COONa/1.00 M CH3 COOH (pKa = 4.74) before and after the addition of (a) 0.080 moles NaOH and (b) 0.12 moles HCl. (Assume there is no change in volume). 3. [10 points] The following reaction is found to be first order in A: A −→ B + C ...

Acid dissociation constant, Arrhenius equation, Chemical kinetics 617  Words | 7  Pages

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Determining Order from Rates of Reactions

 Determining Order from Rates of Reactions AP Chemistry Purpose The focus of this experiment is to recognize that when aqueous solutions of potassium iodate ion (KIO3-) and bisulfite ion (HSO3-) are mixed, a series of reactions will occur, and the final reaction is signaled by the appearance of a dark blue color. My partners and I investigate how the concentration of the reactants affects the rate of reaction. The purpose of this lab is to...

Chemical engineering, Chemical kinetics, Chemical reaction 1187  Words | 7  Pages

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To Investigate the Effect of Hydrogen Peroxide Concentration on Enzyme Catalase

Aim: To investigate the effect of hydrogen peroxide concentration on enzyme catalase Indroduction: Enzymes are proteins. They function as biological catalysts. They lower the energy barrier of a reaction so that the reaction can take place at body temperature. Also, they can speed up Metabolic reactions without being changed or used up. During a reaction, an enzyme molecule combines temporarily with the substrate. When the reaction is complete, the enzyme molecules returns to its original dorm...

Catalase, Catalysis, Chemical reaction 657  Words | 3  Pages

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Rates of Reaction

Coursework – Rates of Reaction Research The rate of reaction tells us how quickly a chemical reaction takes place. It is important for people in industry to know how fast a reaction goes. They have to know exactly how much of their product they can make each hour, day or week. In a shampoo factory, the rate might be 100 bottles per minute. We can't work out the rate of a reaction from its chemical equation. Equations can only tells us how much product we can get. They don't say how quickly...

Calcium carbonate, Carbon dioxide, Chemical kinetics 539  Words | 3  Pages

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The effect of enzyme concentration, substrate concentration, pH, and temperature on the enzyme catalase.

of enzyme concentration, substrate concentration, pH, and temperature on the enzyme catalase. Introduction: Enzymes are biological catalysts; proteins and RNA. They are required for most biological reactions and they are highly specific. Each enzyme has an active site. The active site is the spot on the enzyme where a substrate fits in. Substrates binds with enzymes through the active site. Enzymes, being highly specific, only fit with one certain substrate. Enzymes and substrates fit and work...

Catalase, Catalysis, Chemical equilibrium 864  Words | 3  Pages

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The Iodide-Persulphate Reaction: the Effect of Concentration on Reaction Rate

Summary This experiment will measure the rate of oxidation of iodide ions by persulphate ions to derive the rate law for the reaction. Starch will be added to the reaction to facilitate the measure of time during the reaction. The reactant solutions will contain (NH4)2SO4 and KI, represented as: (NH4)2S2O8 + 2KI -> I2 + (NH4)2SO4 + K2SO4 This can be simplified to: S2O82- + 2I- -> I2 + 2SO42- These equations can only be carried out and be visible after the iodine has completely...

774  Words | 3  Pages

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Research for Controlled assessment on rate of reaction

 Rate of Reaction (help) The rate of a reaction can be measured by the rate at which a reactant is used up, or the rate at which a product is formed. The temperature, concentration, pressure of reacting gases, surface area of reacting solids, and the use of catalysts, are all factors which affect the rate of a reaction. Chemical reactions can only happen if reactant particles collide with enough energy. The more frequently particles collide, and the greater the proportion of collisions with...

Catalysis, Chemical reaction, Chemistry 732  Words | 3  Pages

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Investigating the Rate of Reaction Between Peroxydisulphate (Vi) Ions and Iodide Ions

find the rate equation of the reaction of hydrogen peroxide and iodide ions. This will be achieved by using an iodine clock method and colorimetric analysis. 2. Draw a graph of rate against concentration for each reactant (Hydrogen peroxide, potassium iodide and H+ ions). 3. Finding the order for each reactant 4. Finding the rate-determining step. 5. Proposing a mechanism for the reaction. 6. Using Arrhenius' equation to find the activation enthalpy. Background The basic reaction for this...

Chemical kinetics, Chemical reaction, Chemistry 1987  Words | 7  Pages

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Rate of Reaction

Investigating Rate of Reaction between Iodide ions and Peroxodisulphate ions with respect to Temperature and use of a Catalyst Introduction The aim of this experiment was to investigate the affect of the use of a catalyst and temperature on the rate of reaction while keeping all the other factors that affect the reaction rate constant. In the reaction, potassium peroxodisulphate and potassium iodide will be used to provide the peroxodisulphate ions and iodide ions respectively. The ionic...

Chemical kinetics, Chemical reaction, Enzyme 894  Words | 4  Pages

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Enzyme Controlled Reactions Lab

Enzyme Controlled Reactions 1) Describe the relationship between substrate concentration and the initial reaction rate of an enzyme-catalyzed reaction. Is this a linear relationship? What happens to the initial reaction rate as substrate concentration increases? A) The relationship between the substrate concentration and the initial reaction of an enzyme-catalyzed reaction is very productive, but is dramatically affected by the pH level of the given solution. The most productive pH level is...

Catalysis, Celsius, Chemical reaction 396  Words | 2  Pages

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The Effect of Concentration of H2O2 on the Docomposition of Hydrogen Peroxide

What happens? For many reactions involving liquids or gases, increasing the concentration of the reactants increases the rate of reaction. In a few cases, increasing the concentration of one of the reactants may have little noticeable effect of the rate. These cases are discussed and explained further down this page. Don't assume that if you double the concentration of one of the reactants that you will double the rate of the reaction. It may happen like that, but the relationship may well...

Chemical kinetics, Chemical reaction, Chemistry 937  Words | 4  Pages

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Rate of Reactions

RATE OF REACTIONS. The reaction rate (rate of reaction) or speed of reaction for a reactant or product in a particular reaction is intuitively defined as how fast or slow a reaction takes place. For example, the oxidative rusting of iron under the atmosphere is a slow reaction that can take many years, but the combustion of cellulose in a fire is a reaction that takes place in fractions of a second (right). Chemical kinetics is the part of physical chemistry that studies reaction rates. The concepts...

Activation energy, Chemical engineering, Chemical kinetics 2099  Words | 7  Pages

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Rate of Reaction Design Lab

Affecting Rate of Reaction Introduction Hydrogen Peroxide (H2O2), is the most simple peroxide and commonly used in several household items such as toothpaste or as an alternative to bleach. However hydrogen peroxide it is a very dangerous substance when accumulated in large amounts. If that situation occurs this substance must be decomposed. But how can we decompose this reaction? Well it decomposes by itself very slowly (2H2O2(aq) -> 2H2O(l) + O2(g)), but that would take too long. This reaction can...

Chemical reaction, Chlorine, Concentration 1163  Words | 4  Pages

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SN2 reaction lab

the most studied reactions in organic chemistry. In class, we are learning about two of these cases: SN1 and SN2. Many other reactions in this class proceed by mechanisms that are best described as somewhat between the two extremes. The SN2 reaction occurs in a single step. The nucleophile simultaneously attaches to the substrate as the leaving group leaves. The reaction displays second-order kinetics; its rate is proportional to the concentrations of the both the substrate and the nucleophile...

Chemical reaction, Chemistry, Elimination reaction 1082  Words | 2  Pages

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Factors affecting the rate of Enzyme activity

Sep.2013 Factors Affecting the Rate of Enzyme Activity The Purpose of doing this experiment is “how factors affect on the rate of enzyme activity.” “We examine the affects of enzyme activity when exposing enzymes to different substrates, PH and temperature. In this experiment a type of enzyme called Peroxides has been used. Peroxidase is the enzymes are found in living organism so, it can be founded in both liver and potato. For measuring the rate of enzyme activity in each experiment...

Catalase, Enzyme, Glucose 1642  Words | 5  Pages

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Factors That Affect Enzyme Reaction Rate

Lab Report Factors That Affect Enzymes Reaction Rate Name of lab: Effects of temperature, pH, Enzyme Concentration, and Substrate Concentration on Enzymatic Activity Introduction: Enzymes are the most important types of proteins, they act as catalysis (speed up chemical reactions). If enzymes didn’t exist, biochemical reactions would act to slowly and they couldn’t keep up with the metabolic functions. Enzymes have a three-dimensional structure that is really complex. This structure consists...

Acid dissociation constant, Buffer solution, Catalysis 772  Words | 3  Pages

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Enzyme Kinetics Lab Report: The reaction rate of enzyme, '-amylase in Starch-Iodine solution at different temperatures and pH levels

was to evaluate absorbance and the reaction rate of an enzyme, '-amylase in starch-iodine solution. We will be testing the relationship between enzymatic reaction affected by temperature and pH. Through the testing the enzyme at different temperatures, and different pH levels; it would determine at which temperature and pH level the enzyme worked the most efficiently. Analyzing absorbance of the solutions with spectrophotometery will determine the reaction rate. To test the optimal pH, the starch...

Amylase, Catalysis, Chemical reaction 1987  Words | 6  Pages

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Chemistry, Rate of Reaction

Factors Affecting Rates of Reaction Thanks to Michelle Craig Manitoba Curriculum Chemistry Grade 12; Kinetics, Topic 3-08 Objectives To design short experiments to investigate and explain qualitatively using collision theory the relationship between reaction rate and temperature, concentration, catalyst, and surface area. Apparatus and Materials Available 3 x 250 mL beakers magnesium ribbon (1 cm) 3 x test tubes magnesium powder test tube rack mossy zinc 10 mL graduated...

Chemical kinetics, Chemical reaction, Collision theory 1370  Words | 7  Pages

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BIO- substrate concertration

Date: 14th-15th October Title: The effect of the concentration of hydrogen peroxide on catalase Aim: to examine how the concentration of the hydrogen peroxide affects the rate of reaction Hypothesis: The substrate concentration will determine the rate of reaction. The reaction will increase as the concentration increases, but from a certain concentration, the rate will maintain the same rate Materials: 3% hydrogen peroxide 6% hydrogen peroxide catalase round metal basin measuring cylinder ...

Catalase, Catalysis, Concentration 733  Words | 5  Pages

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Chemistry Practical on Rate of Reaction

Aim: The rate at which a reaction occurs, or takes place, is affected by various factors, such as the temperature at which the experiment is conducted in, the pressure which is given, the surface area which is exposed, use of catalysts, and the concentration. In this investigation, I would be investigating the affect of surface area, or particle size, in the rate at which a reaction occurs. Background Information: The more finely divided the solid is, the faster the reaction happens. A powdered...

Chemical kinetics, Chemical reaction, Chlorine 2392  Words | 7  Pages

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investigating the effect of substate concentration on the activity of catalase

- - - - - - - - - - Effect of Substrate Concentration on Catalase Aim: An experiment to find out how the concentration of hydrogen peroxide affects the rate of reaction of the enzyme catalase. Background Information: Enzymes such as catalase are globular protein molecules with catalytic properties. A catalyst is a substrate which can alter the rate of reaction without itself undergoing any permanent change. As they are not changed my reactions which they catalyse, enzymes can...

Catalase, Catalysis, Enzyme 978  Words | 5  Pages

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Effect of decreasing the concentration of 95% solution of ethanol on the volume of oxygen gas collected through the reaction of hydrogen peroxide and catalase

Abstract The purpose of this lab was to test if ethanol affects the reaction involving hydrogen peroxide and catalase. Tests were performed by putting chicken liver, ethanol solution (diluted ethanol solution for other trials) and hydrogen peroxide in a test tube with a side arm, and having a rubber tube lead the oxygen gas into a gas collection tube. Results from the tests showed a negative correlation, this means that the more diluted the solution of 95% ethanol was, the less oxygen gas collected...

Catalase, Catalysis, Chemical reaction 1421  Words | 5  Pages

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Enzyme-controlled reaction, factors that affect the chemical structure and properties of the enzyme.

Write an explanation of how any two factors affect the rate of an enzyme-controlled reaction. How do these factors affect the chemical structure and properties of the enzyme. Many things can affect the rate of enzyme activity. The temperature of the enzyme, the pH of the solution, the concentration of the enzyme, substrate and the product. Also, another affector is the number of competitive and non-competitive inhibitors. As I cannot explain them all, I have chosen to explain the effect of temperature...

Catalysis, Chemical reaction, Citric acid cycle 733  Words | 3  Pages

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Factors Affecting Reaction Rate Lab Report

Affecting Reaction Rate Lab Report Objective: To observe and record the different effects of reactants on concentration, surface area, and temperature, on the reaction rates for each. Materials: Refer to the Experiment 18A worksheet Procedure: Refer to the Experiment 18A worksheet Data Table: Mass of 11cm strip of Mg: 0.13g Average mass of 1 cm piece of Mg: 0.0118 Table 1: Effect of Concentration on Reaction Rate Concentration of Acid Reaction Time (s) Reaction Rate (g Mg/s)...

Chemical kinetics, Chemical reaction, Chlorine 772  Words | 4  Pages

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Temperature on Rate of Pnpp Hydrolysis

LABORATORY 3 The Effect of Temperature on the Rate of PNPP Hydrolysis Partners: Shelby Cruickshanks Alexis Williamson Introduction Most of the chemical reactions, which occur throughout our bodies, would proceed at a much slower rate of reaction without the presence of an enzyme. Cells can not wait for centuries for molecules to break down, if they waited for that, there would be no way for the organism to obtain energy or in turn survive. This is where biological catalyst comes into...

Activation energy, Catalysis, Chemical kinetics 1524  Words | 5  Pages

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Rates of Reaction Lab Investigation

Chemestry Lab Rates of Reaction (Picture from: http://sciencespot.net/Pages/kdzchem.html) The rate of reaction is how fast or slow a reaction is completed. This is important for factories and chemists all over the world. What happenes during a reaction is atoms or molecules that collide and form new molecules. You can affect this rate of reaction with: temperature of reactants or suroundings, surface area of reactants, if there is a catalyst present, but in theis lab the concentration was changed...

Chemical kinetics, Chemical reaction, Chlorine 977  Words | 4  Pages

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