Enzyme Catalase Essay

An Investigation on the rate of reaction of the enzyme Catalase on the substrate Hydrogen peroxide. Plan Aim: To investigate the rate of the effect of Catalase on hydrogen peroxide. Introduction This investigation will be carried out to investigate the rate of reaction of the enzyme catalase on the substrate hydrogen peroxide. Enzymes are biological catalysts, which speed up the rate of reaction without being used up during the reaction, which take place in living organisms. They do this by

The effect of varying the substrate concentration of hydrogen peroxide on the rate of enzyme activity of catalase from potato peel. Aysha Shahimi, and Jianyi Liang Department of Biology, Glebe Collegiate Institute. Ottawa, Ontario Abstract: The purpose of this lab was to study the effect of varying the substrate concentration of Hydrogen peroxide (H2O2) on the rate of peeled potato catalase enzyme activity, on the decomposition of H2O2. This experiment was carried out by diluting the 6% H2O2 with

Title: Observing how the enzyme catalase found in chicken and beef livers breaks down hydrogen peroxide at varying pH levels and temperatures. Purpose: The chemical hydrogen peroxide(H₂O₂) is broken down by the enzyme catalase. Hydrogen peroxide is a byproduct formed in cellular reactions that, if not broken down, could inflict severe damage to the cell. Catalase is an enzyme that breaks down hydrogen peroxide in to water and oxygen. How efficient and strong the enzymes reaction to break down

INTRODUCTION Enzymes are biological catalysts that speed up chemical reactions, without being used up or changed. Catalase is a globular protein molecule that is found in all living cells. A globular protein is a protein with its molecules curled up into a 'ball' shape. All enzymes have an active site. This is where another molecule(s) can bind with the enzyme. This molecule is known as the substrate. When the substrate binds with the enzyme, a product is produced. Enzymes are specific to their

sample size in an experiment so that it lowers the effect of random errors throughout the practical. Results The following results were constructed by creating a reaction with hydrogen peroxide to form water and oxygen in the presence of the enzyme catalase. This was done by varying the temperatures from 10˚C to 50˚C. Table 1. Raw data of own results Temperature (˚C) Froth Distance (mL) Rate of Reaction (mL/s) 10 24 1.2 20 29 1.45 30 32 1.6 40 34 1.7 50 52 2.6 Figure 3. Raw

Abstract The assigned unknown in tube #3 was classified as a gram positive bacteria shaped as Cocci Chains. Enterococcaceae is the family of the streptococcus faecalis. The gram positive bacteria included tests such as the Catalase, Coagulase, Mannitol Salt Agar (MSA), Streptococcus Faecalis Medium (SFM), and the Bile Esculin test. The purpose of these tests was to distinguish which unknowns were positive vs negative as well as to determine the morphology or shape of the unknown bacterias. Introduction

agalactiae, was the catalase assay. The catalase test for the enzyme catalase that is produced by bacteria that undergo usually aerobic respiration. The enzyme specifically catalyzes a reaction that breaks down hydrogen peroxide, which would be cidal to anaerobic bacteria that do not produce the enzyme. Taking a sample from an isolated colony and placing it on a slide, a drop of hydrogen peroxide is added to determine whether the bacteria is positive or negative for the enzyme. The colony produced

Part A was just a beginning. The experiment showed us what a normal catalase reaction really is. We had one basic procedure; observe what happens when you add hydrogen peroxide to beef liver. At first we were just amazed by the bubbling product, we did not realize that a chemical reaction was going on. We had to redo the experiment so we could note that heat was being released as well as a combination of harmless gasses. We timed the reaction and learned to estimate the reaction rates by the time

activity of antioxidative enzymes; superoxide dismutase (SOD), catalase (CAT), Guaiacol peroxidase (POD), ascorbate peroxidase (APX) and glutathione reductase (GR) on Zea mays plant grown for 45 days in calcareous soils with mycorrhizal (+M) and non- mycorrhizal (-M) treatments. Figure 8 shows the antioxidant (SOD, CAT, APX, POD and GR) activities in mycorrhizal (M) and non-mycorrhizal (NM) plants at different P concentrations (0, 15, 30, 60 and 120 mg kg-1 soil). CAT Catalase (CAT) is involved in

Oxygen can exist in a number of different forms one of which is hydrogen peroxide (H2O2). H2O2 is a particularly toxic form of oxygen that can be detrimental to numerous bacteria, however to combat this several species have come to produce an enzyme called catalase which can prevent H2O2 from damaging their cells. Knowing this microbiologist have