Essays Tagged: "Catalase"

A lab report on the investigation of temperature on catalase activity.

INVESTIGATION INTO THE EFFECT OF TEMPERATURE ON CATALASE ACTIVITYAIMThe aim of this experiment is to find out the effect of temperature on catalase ... hydrogen peroxide is most efficient. This (degradation) reaction will help us determine some of the catalase's different attributes.HYPOTHESISIn this experiment it would be safe to hypothesise that no ... water becomes. Another theory is that different things adapt according to their habitat. Therefore, catalase would be most active at around 37 degrees body temperature. This means that in this experim ...

(3 pages) 96 0 5.0 Oct/2003

Subjects: Science Essays > Biotechnology

To investigate the effect of surface area on the rate of reaction using the enzyme Catalase, found in potato, and the substrate Hydrogen Peroxide.

nzymes 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 p ... centration·Enzyme ConcentrationThe factor I am changing is surface area of potato containing Catalase. By increasing the surface area of the potato, you make more Catalase molecules be exposed ...

(11 pages) 78 0 4.2 Feb/2004

Subjects: Science Essays

An investigation to compare the reaction rates between potato an hydrogen peroxide and liver and hydrogen peroxide

d hydrogen peroxide against liver and hydrogen peroxide through loss in mass.Background information:Catalase is an enzyme that is found in all cells. This means that it is an intracellular enzyme. And ... on of the reactant will affect the reaction rate. If there is a strong concentration of reactant or catalase then there will be a faster reaction rate than if the concentration was weak. Also, the hig ...

(8 pages) 68 1 4.2 Feb/2004

Subjects: Science Essays

Enzyme action

the metabolism of bacteria. Our body cells and those of many other animals contain an enzyme called catalase that accelerates the conversion of toxic hydrogen peroxide to water and oxygen gas.In this ...

(5 pages) 53 0 5.0 Mar/2004

Subjects: Science Essays > Biology

Causes and treatment of acne.

normal flora but ferments glucose leading to the production of propionic acid. It can also produce catalase along with indole, nitrate, or both indole and nitrate ("Propionibacterium acnes3").Being a ...

(6 pages) 73 1 4.3 Mar/2004

Subjects: Humanities Essays > Health & Medicine

Lab: Exploring Organelle Function

mes, most reactions in a cell would not occur. Enzymes function best in an acidic environment as do catalase, however the correct concentration of an acidic solution is needed to ensure the most effic ... rect concentration of an acidic solution is needed to ensure the most efficient reaction. Placing a catalase enzyme into a solution which is slightly acidic (less than pH 7) produces the best catalyti ...

(3 pages) 52 0 4.2 Apr/2004

Subjects: Science Essays > Biology

To investigate the effect that surface area has on the rate of reaction

iquid that has a sharp odour. It is unstable. Peroxidase is an enzyme which catalyses the reaction. Catalase is an enzyme present in the cells of plants and animals. It is an aerobic (requires oxygen) ... onversion of hydrogen peroxide, a potentially harmful oxidising agent to water and molecule oxygen. Catalase also uses hydrogen peroxide to oxidise toxins. It is located in a cell organelle called the ...

(3 pages) 90 1 4.4 May/2004

Subjects: Science Essays > Biology

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 + H2OPlanning:Introduction: An Enzyme is any one of ... gents and high temperatures in ordinary chemical reactions.MethodI will be looking at the effect of catalase (in potatoes) on Hydrogen Peroxide to find the effect of temperature on the rate of an enzy ...

(7 pages) 145 0 4.6 Jun/2004

Subjects: Science Essays > Biology

Investigating the effect that temperature has on the rate of reaction and therefore the amount of oxygen produced

through the kinetic theory, collision theory and the lock and key hypothesis.Hypothesis and theory:Catalase is an enzyme found in food such as potato. It is used for removing hydrogen peroxide from c ... et used up in the reaction. One can usually be used many times.In this experiment the enzyme is the catalase in the yeast and the substrate is the hydrogen peroxide. There are several theories, which ...

(13 pages) 60 0 2.2 Jul/2004

Subjects: Science Essays

Investigation Of Enzymes And Hydrogen Peroxide

TaskTo find the effect of temperature on enzymes, using a potato as a catalyst. The source of catalase is in the potato cells.TheoryEnzymes are large proteins that speed up chemical reactions. I ... n see when the enzyme is most active and when it starts to denature. I found that the optimum for a catalase is at least 40°C. The enzyme denatured at about 60°C because the weak bonds, which ...

(4 pages) 42 0 4.3 Dec/2004

Subjects: Science Essays > Biology

How and why do enzymes work?

e molecules.Most enzymes have evolved to work most efficiently at around 37oC. This is the case for catalase. This should be an important factor to be considered in our experiment.However enzymes are ... s made of protein, and turns from a clear liquid to a white solid as the heat denatures the protein.Catalase is very important for us. It works on Hydrogen Peroxide (H2O2) to from Water and oxygen. Hy ...

(2 pages) 23 0 0.0 Mar/2006

Subjects: Science Essays > Biology

To investigate the effect of surface area on the rate of reaction using the enzyme Catalase, found in potato, and the substrate Hydrogen Peroxide.

ent. I will need to use the same potato and cut a fresh chip at each stage of the experiment as the catalase may become effected by exposure to the air. This may effect results so I will keep the chip ...

(2 pages) 23 0 3.0 Mar/2006

Subjects: Science Essays > Biology

Catalase essay

What is Catalase?Enzymes are very large and complex organic molecules that are synthesized by the cell to pe ... y speed up the rate of the reaction they catalyze that would otherwise be too slow to support life. Catalase is an enzyme present in the cells of plants, animals and aerobic (oxygen requiring) bacteri ... a powerful and potentially harmful oxidizing agent, to water and molecular oxygen.2H2O2 to 2H2O + O2Catalase also uses hydrogen peroxide to oxidize toxins including phenols, formic acid, formaldehyde ...

(4 pages) 70 2 3.3 Mar/2006

Subjects: Science Essays > Biology

The effect of substrate concentrations on the rate of the decomposition of hydrogen peroxide when catalyzed by the enzyme catalase.

e concentrations on the rate of the decomposition of hydrogen peroxide when catalyzed by the enzyme catalase. This is part of our work on the function of enzymes, how they work and the effects of cond ... ed reactions, equilibrium, specificity and denaturation.Let me write specifically about the enzyme, catalase and the substrate, hydrogen peroxide. In organisms, hydrogen peroxide is a toxic by-product ...

(17 pages) 54 0 1.0 Mar/2006

Subjects: Science Essays > Biology

The Effects of Peroxidase

s often occurring. Animals have a large amount of this enzyme in there liver; this enzyme is called catalase. Plants also have vast amounts in specific areas where metabolic function is high; in plant ...

(3 pages) 38 0 0.0 Apr/2006

Subjects: Science Essays > Biology

An Investigation into how the Concentration of Substrate will affect the Rate of an Enzyme Controlled Reaction

n of hydrogen peroxide affects the rate of reaction between the hydrogen peroxide, and it's enzyme, catalase, which is found in yeast. There are many other factors which will affect the speed with whi ... ll affect the rate of the reaction. This is because the particles of the hydrogen peroxide, and the catalase have to collide in order for the reaction to happen. If there are more hydrogen peroxide pa ...

(14 pages) 44 1 1.0 Apr/2006

Subjects: Science Essays > Chemistry

AP Biology Enzyme Synthesis Lab Report

ll observe the conversion of hydrogen peroxide (H2O2) into water and oxygen gas. An enzyme known as catalase facilitates this conversion reaction. The catalase enzyme acts as catalysis, helping lower ... reaction while the enzyme itself is not affected. The reaction could take place without the help of catalase, but it would happen a lot more slowly because more energy is needed for the reaction.Ĥ ...

(5 pages) 82 0 4.0 Aug/2001

Subjects: Science Essays > Chemistry

Catalase

CatalaseThe enzyme of catalase was first noticed 1811 by the French chemist Louis Jacques Thenard, a ... il 89 years later in 1900 that Oscar Loew named that substance. In 1937 James B.Summer crystallized catalase from beef liver and a year later he worked out its molecular weight. The amino acid sequenc ... m beef liver and a year later he worked out its molecular weight. The amino acid sequence of bovine catalase was worked out in 1969. The latest activity involving catalase was in 1981 when its 3D stru ...

(4 pages) 2076 0 5.0 Mar/2009

Subjects: Science Essays > Biology

An investigation in to the distribution of catalyse in different plant tissues

the amount of catalyse present. I found varying tissues to have varying amounts present.IntroductionCatalase is a widespread enzyme, found in nearly all aerobic cells (animals, plants and microbes). I ... summarised by the equation:2H 0 2H 0 + 0Different plant materials contain very different amounts of catalase activity and this is what I will be looking at.Catalase is located in a cell organelle call ...

(5 pages) 2734 0 3.0 May/2009

Subjects: Science Essays > Chemistry

Investigation of the Change of pH Affecting Enzyme Activity

s depending on the enzyme in question. The enzyme experimented on in this experiment was the enzyme catalase, which works best at a pH of 7.0 (http://www.worthington-biochem.com/IntroBiochem/effectspH ... out its function, this is usually permanent (IB biology notes).Variables:Dependent variable:Rate of catalase reaction when dropped into a clear vial containing 20ml of hydrogen peroxide at three diffe ...

(4 pages) 16 0 1.0 Feb/2010

Subjects: Science Essays > Chemistry