"Three Main Steps Of The Cycle Of Enzyme Substrate Interactions" Essays and Research Papers

Three Main Steps Of The Cycle Of Enzyme Substrate Interactions

Enzyme Report Case 1 - Hereditary Fructose Intolerance 1 & 2. Enzymes take on a variety of roles in the human body at the cellular level. Specifically, they aid in the breakdown of macronutrients such as glucose and fructose so that the body can use them. Although reactions within the body would occur without enzymes, enzymes provide control because the reaction is not needed all of the time. Enzymes function in specific environments such as temperature or pH; some enzymes are specific...

Adenosine triphosphate, Cellular respiration, Citric acid cycle 1169  Words | 4  Pages

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Citric Acid Cycle

Citric acid cycle From Wikipedia, the free encyclopedia Jump to: navigation, search [pic] [pic] Overview of the citric acid cycle The citric acid cycle — also known as the tricarboxylic acid cycle (TCA cycle), the Krebs cycle, or the Szent-Györgyi-Krebs cycle, [1][2] — is a series of enzyme-catalysed chemical reactions, which is of central importance in all living cells that use oxygen as part of cellular respiration. In eukaryotic cells, the citric acid cycle occurs in the matrix of the mitochondrion...

Adenosine triphosphate, Cellular respiration, Citric acid cycle 1739  Words | 7  Pages

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Enzymes: Enzyme and Enzymes- Substrate Complex

What is Enzyme? Enzymes are protein that acts as speed up reactions and break down molecules in our body. However, different enzymes only work on certain types of molecules. Enzymes can accelerate the reactions by more than one million times.(3) In our human body, there are a total about forty thousand types of enzymes and each catalyzes different kind of molecule.(3) The molecules that enzymes help to accelerate is called substrates, and when enzyme is combined together with the substrate, it is...

Adenosine triphosphate, Enzyme, Enzyme inhibitor 1115  Words | 3  Pages

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May 1, 2013 Enzymes as Drug Targets Enzymes are defined as any of numerous proteins produced in living cells that accelerate or catalyze the metabolic processes of an organism. Enzymes are usually very selective in the molecules that they act upon, called substrates, often reacting with only a single substrate. The substrate binds to the enzyme at a location called the active site just before the reaction catalyzed by the enzyme takes place. Enzymes can speed up chemical reactions by up to...

Adenosine triphosphate, Catalysis, Chemical reaction 962  Words | 3  Pages

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Biochemistry Enzymes

Action of enzymes as catalysts in biochemical processes * Enzymes acts as catalyst and increase the rate of all the chemical reactions. * Enzymes are also described by two properties like all other catalysts. It composed of two main functions. * The first function is that, they increase the rate of chemical reactions by without consumed themselves or undergo any change or alteration in the reaction. . ( Zemitec et,al 2008). * The second function is, they increase reaction rates...

Adenosine triphosphate, Cellular respiration, Citric acid cycle 1114  Words | 4  Pages

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enzyme immobilization

Enzyme Immobilization Methods Covalent Binding: Covalent binding is a conventional method for immobilization; it can be achieved by direct attachment with the enzyme and the material through the covalent linkage [37]. The covalent linkage is strong and stable and the support material of enzymes includes polyacrylamide, porous glass, agarose and porous silica [38]. Covalent method of immobilization is mainly used when a reaction process does not require enzyme in the product, this is the criteria...

Amino acid, Biosensor, Blood sugar 1315  Words | 3  Pages

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Enzyme Substrate Complex

Meera Patel Enzyme lab 6/3/2013 Assignment 1 :- Effect of Temperature on Invertase Activity, Determining the Starting 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...

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

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Enzyme Inhibition

Enzyme Inhibition Many drugs exert their action by inhibition of an enzyme activity in the body. If the activity of an enzyme is vital to the cell or organism, then inhibition may lead to death of the cell or organism. It is now possible to design new drugs which are enzyme inhibitors once a target enzyme has been identified. Types of Inhibitors A) Reversible Inhibitors: The effect of the inhibitor is instantaneous, and it can be removed from the enzyme by dialysis so that the enzyme activity...

Active site, Adenosine triphosphate, Catalysis 2117  Words | 7  Pages

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Enzymes: Enzyme and Variable Groups

structure of the enzyme is mainly dependent on the active site and variable groups. Extreme temperatures or extreme pHs can alter the structure of an enzyme. Enzymes function to lower the activation energy to break the bonds. They achieve this by putting stress and pressure on the bonds or creating a microenvironment for the substrate. Enzymes are regulated by inhibitors or activators and can be inhibited by the products of the reaction, called feedback inhibition. Enzymes are catalytic proteins;...

Catalysis, Chemical reaction, Enzyme 1032  Words | 3  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...

Base, Buffer solution, Catalysis 2348  Words | 7  Pages

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A1. Role of Enzymes in Processes Enzymes are organic catalysts that help to speed up the breakdown of a molecule, such as fructose. The enzyme helps a chemical reaction take place quickly so that the reaction happens properly. In order for that to happen the enzymes process by the lock and key model, the lock is the substrate and the enzyme is the key. The active sites are specific to a certain substrate of a molecule, so the enzymes only have one job to do. The shape of an enzyme is not changed...

Adenosine triphosphate, Cellular respiration, Citric acid cycle 757  Words | 3  Pages

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The Effect of Substrate Concentration on the Enzyme Amylase

3 SUBJECT: Biology TITLE: Enzymes AIM: To investigate the 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...

Amylase, Catalysis, Chemical reaction 1336  Words | 4  Pages

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amylase and starch. Introduction The enzyme amylase is found in the human body, it catalyses the hydrolosis of internal glycosidic bonds in polysaccharides, the breakdown of starch into sugars. Amylase is present in human saliva, where it initiates the chemical process of digestion. Enzymes work best at an optimum pH of 7 which is the bodies normal pH. The pH affects the charge of the amino acid at the active site. PH changes affect the structure of an enzyme molecule and therefore affect its ability...

Amylase, Enzyme, Glucose 1015  Words | 4  Pages

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Enzyme Catalysis Lab

Abstract: After reviewing the basics of enzymes and catalysis, we take a dive into the wonderful world of catalase. Beginning with establishing a base line of just how much hydrogen peroxide there is in 5.0mL of the reacted solution; to figuring out exactly how much actually reacted after 300 seconds of catalyzed reaction. Follow the experiment from the beginning steps right to the end as you see where the students went wrong, interpretation of the results, and great answers to work sheet...

Amino acid, Catalysis, Enzyme 1186  Words | 4  Pages

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REACTIONS AND ENZYMES Table of Contents Endergonic and exergonic | Oxidation/Reduction | Catabolism and Anabolism Enzymes: Organic Catalysts | Learning Objectives | Links Endergonic and exergonic | Back to Top Energy releasing processes, ones that "generate" energy, are termed exergonic reactions. Reactions that require energy to initiate the reaction are known as endergonic reactions. All natural processes tend to proceed in such a direction that the disorder or randomness of the universe increases...

Adenosine triphosphate, Catalysis, Chemical reaction 1820  Words | 11  Pages

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Effects of Enzyme Catalysis of H2O2 by Catalase

Effects of Enzyme Catalysis of H2O2 by Catalase Report by: Timmy Lin (#269164729) October 17, 2011 Mr. Rienzi AP Biology Problem: Measuring the effects of Catalase enzymes on hydrogen peroxide decomposition. Measuring the rate of the reaction when hydrogen peroxide and Catalase are mixed at the same ratio for different time (10, 20 30 60 120 180 360 seconds). Background: Enzymes are biological catalysts that carry out cellular metabolic processes with the ability to enhance the rate...

Catalase, Catalysis, Chemical reaction 1356  Words | 5  Pages

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Experiment 10 Enzymes Purpose: The purpose of this lab is to observe through experimental procedure on how enzymes affect chemical reactions. Introduction: An enzyme is a protein that serves as a biological catalyst. A catalyst is any substance that increases the rate of a chemical reaction, (done by lowering the activation energy of the reaction). In this experiment we are using Hydrogen peroxide (the substrate for this experiment). Peroxidase is a soluble enzyme normally found in the cytoplasm...

Catalysis, Chemical kinetics, Chemical reaction 865  Words | 3  Pages

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Enzyme Lab Report

 ENZYME LAB REPORT 1. In your own words, define objective qualitative and objective quantitative data. DO NOT USE EXAMPLES AS YOUR SOLE DEFINITION. (3) There are two different types of information that can be obtained from research. The types of information that can be obtained are quantitative and qualitative data. Research results are considered qualitative when the results can be answered with a simple statement of yes or no. Qualitative data does not attempt to give a numerical value; instead...

Enzyme, Glucose, Hydrolysis 1334  Words | 5  Pages

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CHAPTER 4: ENZYMES Enzymes are biological catalysts. There are about 40,000 different enzymes in human cells, each controlling a different chemical reaction. They increase the rate of reactions by a factor of between 106 to 1012 times, allowing the chemical reactions that make life possible to take place at normal temperatures. They were discovered in fermenting yeast in 1900 by Buchner, and the name enzyme means "in yeast". As well as catalysing all the metabolic reactions of cells (such as respiration...

Activation energy, Catalysis, Chemical reaction 1858  Words | 7  Pages

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Six factors Affecting The Performance of An Enzyme

Six Factors Affecting the Performance of an Enzyme Enzymes are considered catalysts; substances that increase the rates of reactions. Enzymes are responsible for thousands of metabolic processes that involve the sustainment of life, one common one is simple food digestion. Without enzymes, digestion would occur too slowly for life to continue. Enzymes maintain a protein structure consisting of one or possibly more than one polypeptide chains of defined primary structure, and take up a characteristic...

Catalysis, Enzyme, Enzyme assay 2512  Words | 7  Pages

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Simple experiments on The enzyme Catalase

Simple Experiments on the Enzyme Catalase Aim: The aim of this practical is to use three different techniques to investigate the effect of different concentrations of the enzyme catalase on the rate of breakdown of hydrogen peroxide. Background information Catalase is an enzyme which is found in all living organisms. This enzyme catalases the decomposition of hydrogen peroxide into water and oxygen. Cells continually produce a poisonous by-product of metabolising, called hydrogen peroxide. ...

Blood sugar, Catalase, Diabetes mellitus 1560  Words | 7  Pages

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Enzyme Substrate

The bonding of an enzyme to its substrate forms an enzyme-substrate complex. The catalytic action of the enzyme converts its substrate into the product or products of the reaction. Each reaction is extremely specific, distinguishing between closely related compounds, including isomers. For example, the enzyme sucrase will only act on sucrose and will not bind to any other disaccharide. The molecular recognition of enzymes is due to the fact that they are proteins, which are defined as being macromolecules...

Acid, Active site, Amino acid 621  Words | 2  Pages

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Enzymes Lab

 Introduction Enzymes are protein based structures that help speed up chemical reactions. They help these reactions keep up with the everyday metabolic needs and other like functions of organisms. Enzymes are also considered catalysts, due to the lowering in activation energy, in which they are not consumed or changed at any point during the reaction. These enzymes have three main protein structures that help keep them formed and intact. Stage 1 of these structures is the primary...

Catalysis, Chemical reaction, Enzyme 1455  Words | 5  Pages

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What Is Krebs Cycle

What is Krebs cycle? The Krebs cycle, also known as the Citric Acid cycle, is a very important process in cellular respiration. Without this portion, respiration would not be possible. This is because the Krebs cycle uses the pyruvate molecules from glycolysis to produce high energy molecules essential for the electron transport chain (ETC) which follows soon after. Described by Hans Adolf Krebs in 1937 A feature of cell chemistry shared by all types of life. A complex series of reactions beginning...

Adenosine triphosphate, Cellular respiration, Citric acid cycle 642  Words | 2  Pages

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Explain the structure of enzymes and discuss their metabolic reactions. Explain the structure of enzymes and discuss their metabolic reactions. Enzyme, a protein that catalyses a specific reaction. ‘Living cells contain thousands of different enzymes’ (Elliott, p.214), each of which catalyses (that is, accelerates without itself being changed) just one kind of reaction. In some of these reactions, small organic molecules such as amino acids, sugars, nucleotides, and lipids are broken down to...

Amino acid, Beta sheet, Enzyme 1681  Words | 6  Pages

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

effect 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...

Catalase, Catalysis, Chemical equilibrium 864  Words | 3  Pages

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Effect of Temperature, Study and Measure of Enzymes Activity

and Measure of Enzymes Activity Abstract This experiment investigates the effect that temperature has on the rate of activity of enzyme β-galactosidase and also the rate of β-galactosidase activity in different concentration of substrate over time. Ο-nitrophenylgalactoside (ONPG) is used as a substrate for β-galactosidase. A spectrophotometer is used to detect the change in colour of the substrate. Results show that increase in temperature up to 50oC speeds up the rate of enzyme activity and any...

Chemical potential, Chemical reaction, Chemistry 2441  Words | 7  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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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 Catalysis Lab Problem: Before the lab, one should understand: • The general functions and activities of enzymes; • The relationship between the structure and function of enzymes • The concept of initial reaction rates of enzymes; • How the concept of free energy relates to enzyme activity; • That change in temperature, pH, enzyme concentration, and substrate concentration can affect the initial reaction rates of enzyme-catalyzed reactions; and • Catalyst, catalysis, and catalase ...

Catalase, Catalysis, Chemical reaction 755  Words | 3  Pages

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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...

Catalysis, Cheese, Chemical reaction 1845  Words | 7  Pages

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Lab Enzymes

Introduction How does changing the surroundings of enzymes affect their reaction rate? The purpose of the experiment is to determine how different abiotic conditions affect the rate at which enzymes accelerate/cause reactions In this lab students measured the height of the foam after catalysis between catalase (enzyme) and 7 other (solutions) to determine which solution had the fastest reaction rate.. The control variable of the experiment would be the solution of only hydrogen peroxide, water...

Acid, Catalase, Catalysis 1639  Words | 6  Pages

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Steps to Accounting Cycle Transcript

Steps to the Accounting Cycle The term, accounting cycle, refers to the steps involved in accounting for all of the business activities during an accounting period. These steps are repeated each reporting period. There are ten steps to the accounting cycle. We will go through each one in detail later. But let’s review the basics. Step one begins with analyze transactions. Step two – journalize. Step three – Post. Step four – prepare unadjusted trial balance. Step five – adjust. Step six – prepare...

Accounting systems, Balance sheet, Bookkeeping 974  Words | 4  Pages

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Examination of the Effects of Inhibitory and Non-Inhibitory Competition, Enzyme-Substrate Concentration, Along with Varying Temperature and pH-Balanced Environments on the Enzyme-Catalyzed Reaction of pNPP Abstract: Introduction: Many of the chemical reactions, which take place in in living things are controlled by enzymes. In such cases, the enzyme is a protein in the cell which lowers the activation energy of a catalyzed reaction, which serves to increase the rate of the reaction. Alkaline...

Alkaline phosphatase, Base, Chemical reaction 1876  Words | 6  Pages

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

The 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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Enzyme concentration affects the rate of reaction

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 new cells. Enzymes also help...

Catalysis, Chemical reaction, Enzyme 865  Words | 4  Pages

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enzyme lab report

Title: Enzyme Catalysis of Hydrogen Peroxide by Catalase Problem and Objectives: How do different temperatures and different levels of pH affect the reaction rate of the enzymes in chicken liver? Demonstrate the activity of an enzyme in living tissue, observe the effects of changes in temperature and pH on the activity of an enzyme, perform analyses for the presence of an enzyme in tissues, and analyzing relationships between environmental conditions and enzyme activity. Background: Cells produce...

Base, Catalase, Catalysis 1977  Words | 8  Pages

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Effect of Enzyme Catalese on Hydrogen Peroxide

investigate the effect of 1) temperature, 2) pH and 3) substrate concentration on the action of enzyme such as catalase on hydrogen peroxide. Background knowledge: Enzymes are organic catalysts composed of proteins that assist organisms in facilitating metabolic reactions without undergoing any change themselves. Enzymes are sensitive to their environment and so must remain within a stable range of factors ( pH, temperature , substrate concentration etc) for them to function. Any deviations...

Acid, Catalase, Enzyme 826  Words | 3  Pages

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PBI Lab Enzymes Catalysts of Life

 Principles of Biology Lab Exercise Enzymes: Catalysts of Life Instructor: Professor Alcendor By Shahid Rana Date: March 7th, 2013 Abstract: In this experiment we have demonstrated the function of enzymes. The whole experiment was devoted to understand how enzymes work as a catalysts and increase the chemical reaction without being used themselves. In general, enzymes are proteins that function as biological catalysts. These enzymes adhere to lower to amount of energy required...

Base, Buffer solution, Catalysis 1290  Words | 6  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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it's lowest to do so. However, in cold solutions the starch will take longer as it will in temperatures beyond 40 degrees. Once it reaches this point, the break down will either take a very long period of time or have no reaction at all as enzymes are denatured at a certain point. Materials: · 4 x test tubes · 5mL Diastase · 5mL Water · 10mL 2% Starch Suspension. · Pipette · 2 x Spotting tiles · Large Beaker filled with water of assigned temperature · Thermometer...

Amylase, Chemical reaction, Enzyme 1134  Words | 6  Pages

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Enzyme Lab Report

Effect of Substrate Concentration on Initial Reaction Rate The purpose of this study is to identify the relationship between substrate concentration and initial reaction rate provided that substrate concentration is much greater than enzyme concentration. Enzymes are essential to life as they are required for many vital metabolic reactions to occur. To adequately explain the properties of enzymes, it is assumed that an enzyme-controlled reaction takes place through an enzyme-substrate complex...

Chemical equilibrium, Chemical reaction, Chemistry 1656  Words | 5  Pages

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Topic: Enzymes and their Industrial importance Table of contents Definition of enzyme……….……………………..3 Composition of enzymes…………………………..3 Characteristics of enzymes………………………..3 Functions……..……………………………………..3 Discovery………..…………………………………...5 Explanation…………………………………………..6 Types of enzymes...............................................…...6 Working………………………………………………6 Sources of enzymes………………………………….7 Industrially important enzymes……………….…10 Some other uses……………………………………...

Archaea, Catalysis, Enzyme 1431  Words | 7  Pages

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Effects of Enzymes

The Effects on Enzymes By Bailey Rose The Effects on Enzymes Bailey Rose 10/31/2011 Abstract In this lab exercise, the study of enzyme catalase, we viewed the breakdown of hydrogen peroxide into water and oxygen. The purpose was to isolate catalase from starch and measure the rate of activity under different conditions.  Changes in temperature and pH along with Substrate Concentration and Enzyme Concentration were the conditions tested in the experiment.  Our class performed...

Chemical reaction, Chemistry, Enzyme 1589  Words | 5  Pages

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Effects of Enzyme

Effects of Temperature on Enzyme Biology Introduction In order to understand the activity of enzymes at different temperatures the ability of the enzyme to function can be measured. This is important in many applications such as Polymerase Chain Reaction for forensics as well as genetics research where manipulation of temperature-dependent enzymes allows for replication of DNA segments. Bennett states, “when the energy - measured...

Absolute zero, Celsius, Chemical reaction 776  Words | 3  Pages

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Enzyme Lab Report

concentrations; that test the reaction rates of the enzyme catalase over a fixed period of time. The major conclusion was that catalase reacts faster in warm temperatures that are neither freezing nor boiling, catalase performs well in lower concentrations than the substrate, and catalase prefers neutral pH levels around 7. Introduction Enzymes are proteins that catalyze metabolic reactions vital for the survival and functioning of cells [1]. Without enzymes, metabolic processes would occur at unfeasible...

Catalase, Catalysis, Chemical reaction 1548  Words | 5  Pages

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Enzymes and Temperature

Zaquia Austin Enzymes and Temperature Laboratory #6 3/13/2013 Purpose (Objectives): The purpose of this experiment was for students to be able to understand the enzyme-facilitated reaction and explain how enzyme activity can be affected by environment conditions. Abstract: This experiment mainly delt with enzymes and the reaction that enzymes have with different solutions in various temperatures. Three different exercises were done. The first exercise...

Amylase, Enzyme, Enzymes 1720  Words | 7  Pages

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Enzyme Kinetic

Biology CTW: Enzyme Kinetic Dr. Cruz 07/22/2010 Enzyme kinetics Introduction Enzymes are biological catalysts or assistants, without enzyme many of important processes of life could not happen. Most of enzymes are proteins that help speed up chemical reactions by lowering amount of activation energy needed for the reaction1. Enzymes are usually highly selective, only bind to specific substrate and convert it to product at a particular rate1. The rate of the reaction affects by substrate concentration:...

Adenosine triphosphate, Catalysis, Chemical kinetics 2046  Words | 7  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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Enzymes Enzymes are special proteins that are found in the cells of living organisms. Enzymes are made up of long chains of amino acids held together by peptide bonds. Enzymes play an important role in performing or controlling a host of chemical reactions that take place in the body. There are various types of enzymes and usually a specific enzyme is responsible for a particular chemical reaction only. While most of them are associated with metabolic processes like digestion and breathing, there...

Catalysis, Cell, Chemical reaction 831  Words | 3  Pages

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Enzymes Lab Report

Enzymes Lab Report Inroduction In this lab we explore an enzymes activity and how it can be affected by changes to its environment. An enzyme is a protein and is a catalyst to chemical reactions. It helps accelerate reactions by lowering the activation energy, which is needed for reactions in cells to progress at a higher rate. Activation energy is the minimum amount of energy needed for a chemical reaction to occur, yielding products from a given set of reactants. (Unit 7: Enzymes lab) Products...

Catalysis, Chemical reaction, Chemistry 1657  Words | 5  Pages

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Ib Bio Experiment on Effect of Substrate Conc on Enzyme Activity

effect of substrate concentration on the rate of enzyme activity of Catalase Aim To investigate the effect of substrate concentration (manipulated by increasing concentration of hydrogen peroxide) on the rate of enzyme activity of catalase, produced by liver cells, on the decomposition of hydrogen peroxide. Introduction Enzymes are biological catalysts that increase the rates of reactions. In an enzyme-catalyzed reaction, the substrate binds to the active site and forms enzyme-substrate complex...

Catalase, Concentration, Enzyme 1211  Words | 5  Pages

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ap bio Enzyme Catalysis

Enzyme Catalysis Introduction: Enzymes are produced by living organisms as proteins. These enzymes perform as catalysts to bring about a chemical reaction. In fact, most reactions are catalyzed by enzymes during reactions in the cell or in the human body. A catalyst that enzymes pose ad are by definition substances that are capable of initiating or speeding up a chemical reaction. Catalyst are not a necessity during a chemical reaction, they are just used to speed up a chemical reaction. This...

Catalase, Catalysis, Chemical reaction 1007  Words | 5  Pages

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Cycles in Biology

A cycle is defined as any complete round or series of occurrences that repeats or is repeated in the same order and at the same intervals. The natural existence of cycles is highly important without cycles resources would run out and organisms would die. The amount of carbon nitrogen and oxygen on the earth is fixed, they can exists in different forms but no more may be added. So that these don’t run out they are cycles so they may be reused. Photosynthesis and respiration are the reverse of each...

Adenosine triphosphate, Carbon dioxide, Cellular respiration 1112  Words | 3  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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Enzyme Lab

Factors which Affect the Activity of the Enzyme Catalase Purpose: Must include:  background information about concepts involved in the lab,  statement of purpose of the lab  identification of independent and dependent variables. A hypothesis is often not necessary or appropriate. Enzymes are proteins that speed up chemical reactions in cells. They break down molecules called substrates. Each enzyme has only one substrate that it breaks down. Enzymes are produced in the cells of the body...

Catalase, Chemical element, Enzyme 716  Words | 3  Pages

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

Aim: To find the effect of temperature on enzymes, using a potato as a catalyst. The source of catalase is in the potato cells. 2H2O2 → O2 + H2O Planning: Introduction: An Enzyme is any one of many specialised organic substances, composed of polymers of amino acids, that act as catalysts to regulate the speed 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...

Catalase, Catalysis, Chemical reaction 1770  Words | 7  Pages

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 Unit 2: Cell Biolo SCIE206-1401B-08 Photosynthesis and cellular respiration make one large cycle that sustains life on earth. Through photosynthesis the suns energy is constantly being transformed into glucose, which is a chemical energy. Respiration is the chemical activity that occurs in all plants and animal cells that release the energy from the glucose. Photosynthesis cannot exist with cellular respiration, they are completely linked together in providing the energy...

Adenosine triphosphate, Carbon dioxide, Cellular respiration 1346  Words | 5  Pages

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Factors Influencing Enzyme Activity

Abstract In this laboratory exercise we studied enzyme catalase, which accelerates the breakdown of hydrogen peroxide into water and oxygen. The purpose was to isolate catalase and measure the rate of activity under different conditions. The laboratory was also conducted in association with a second laboratory that measured the effects of an inhibitor on the enzymes. Changes in temperature and pH along with Substrate Concentration and Enzyme Concentration were the conditions tested in the experiment...

Catalase, Catalysis, Chemical reaction 1808  Words | 5  Pages

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The Importance of Enzymes in Plants and Animals

Enzymes and their importance in plants and animals (25 marks) Enzymes are biological catalysts, which accelerate the speed of chemical reactions in the body without being used up or changed in the process. Animals and plants contain enzymes which help break down fats, carbohydrates and proteins into smaller molecules the cells can use to get energy and carry out the processes that allow the plant or animal to survive. Without enzymes, most physiological processes would not take place. Hundreds of...

Adenosine triphosphate, Cell, Cellular respiration 1099  Words | 3  Pages

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