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
Free Chemical reaction Enzyme Catalase
why they are so important. The complete active enzyme with its cofactor is called a holoenzyme‚ while just the protein part without its cofactor is called the apoenzyme. How do enzymes work? There are three parts to our thinking about enzyme catalysis. They each describe different aspects of the same process‚ and you should know about each of them. 1. Reaction Mechanism In any chemical reaction‚
Premium Enzyme Enzyme inhibitor
3. Results and discussions 3.1. Disease Severity Results presented in Table 2 showed the disease severity (PDS) after 15 d of inoculation. A significant difference in the PDS was noticed between ‘Nicola’ and ‘Spunta’. The resistant cultivar (Nicola) showed lower incidence of infection compared to the susceptible cultivar (Spunta). Inducers’ treatments individually or in combination with difenoconazole (fungicide) showed significant protective effects against A. solani. The 2‚4-D was the most
Premium Health care Health care provider Medicine
Biology Final Review Chapter 1 Biology unifies much of natural science * Living systems: most complex chemical systems on Earth * Constrained by properties of chemistry and physics * Science is becoming more interdisciplinary (combining multiple fields) 7 characteristics of all living organisms 1. Composed of cells 2. Complex and ordered 3. Respond to their environment 4. Can grow‚ develop‚ and reproduce 5. Obtain and use energy 6. Maintain internal balance
Premium Protein Adenosine triphosphate Cell
The catalytic effect of D-block ions and the kinetics of reactions iodine clock reaction: By Stephen Parsons 6K2 Centre number: 61813 Candidate number: 8270 Table of Contents My aim and my reaction: 3 Rate of reaction: 4 Activation enthalpy: 5 Collision theory: 6 The effect of temperature on reaction rate: 7 The effect of concentration on reaction rate: 7 The effect of a catalyst on reaction rate: 8 D-block elements: 9 The effect of extra kinetic energy (from stirring etc.): 10 Where
Premium Chemical kinetics Chemical reaction
Hydrogen Peroxide & Inorganic Peroxy Compounds Hydrogen Peroxide Hydrogen peroxide (H2O2) is the simplest peroxide (a compound with an oxygen-oxygen single bond). It is also a strong oxidizer. Hydrogen peroxide is a clear liquid‚ slightly more viscous than water. In dilute solution‚ it appears colorless. Reactions Decomposition Hydrogen peroxide decomposes exothermically into water and oxygen gas spontaneously: 2 H2O2 → 2 H2O + O2 This process is thermodynamically favorable. It has
Premium Hydrogen peroxide Oxygen
extensive application in organic synthesis‚1-2 but several of these molecules display significant biological activity. In the last decade Schiff base ligands 3-6 have received more attention mainly because of their wide application in the field of catalysis and due to their antimicrobia‚ 11-12 anti-tuberculosis7 and anti-tumor activity. They easily form stable complexes with most transition metal ion.13-14 The development of the field of
Premium Solvent Transition metal Metal
Investigate the effect of temperature on amylase activity Introduction Amylase is an enzyme that catalyses the breakdown of starch into sugars. Amylases are found in almost all plants‚ animals and microorganisms. Large amounts of amylase occur in germinating cereals‚ and in the pancreas and saliva of higher animals. Aim The aim of this experiment is to find out the rate of reaction between amylase and starch in a range of different reaction temperatures. Hypothesis As the reaction
Premium Temperature Energy Thermodynamics
Air pollution is by far the most harmful form of pollution in our environment. Air pollution is cause by the injurious smoke emitted by cars‚ buses‚ trucks‚ trains‚ and factories‚ namely sulphur dioxide‚ carbon monoxide and nitrogen oxides. Even smoke from burning leaves and cigarettes are harmful to the environment causing a lot of damage to man and the atmosphere. Evidence of increasing air pollution is seen in lung cancer‚ asthma‚ allergies‚ and various breathing problems along with severe and
Free Pollution
BIOL1102 2008 PRACTICE QUESTIONS FOR THE MID-TERM EXAM Practice Questions from week 2 lectures 1. The presence of cholesterol in the plasma membrane of some animals: a) Enables the membrane to stay fluid more easily when cell temperature drops b) Enables the animal to remove hydrogen atoms from saturated phospholipids c) Enables the animal to add hydrogen atoms to unsaturated phospholipids d) Makes the membrane less flexible‚ allowing it to sustain greater
Premium DNA replication DNA Bacteria