An Investigation Into The Effect Of PH On The Activity Of Potato Tissue Catalase Aim The aim of my investigation is to see how pH affects the activity of potato tissue catalase‚ during the decomposition of hydrogen peroxide to produce water and oxygen. Catalase + 2H2O2 Catalase + 2H2O +O2 Catalase + Hydrogen Peroxide Catalase + Water + Oxygen Independent Variable The independent variable in this investigation is pH. Each individual enzyme has it’s own pH characteristic
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Potato Enzyme Lab INTRODUCTION An enzyme is a protein that speeds up or slows down a specific chemical reaction in an organism. A good rule of thumb is to remember that enzyme names end in “-ase”. This will help in identifying enzymes in further readings. Generally enzymes are catalysts. Hydrogen peroxide is a toxic chemical that is produced in many organisms during metabolism. Organisms must get rid of this toxin to survive. One reaction turns the hydrogen peroxide into water and oxygen. The
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The drug I chose for this are bath salts. The reason why I chose this drug is because I want to learn more about its effects and potential dangers. It also seems interesting to know that they are human-made chemicals. Bath salts are an amphetamine that are known to cause erratic behavior and psychotic episodes (Gateway). After doing some research‚ I found out that bath salts also go by the name “synthetic cathinones.” Bath salts have gained tremendous popularity in the past decade. They’re known
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Osmosis in Potato Tubers Andrew Dickson Background When a plant cell is bathed in a solution of the same concentration (isotonic) as its intracellular environment‚ its mass and volume remain the same. This is because water enters and leaves the cells at the same rate. There is no net loss or gain of water by osmosis. Samples of cells can be placed in a range of solutions of different concentration. The cells will gain water by osmosis when placed in solutions which are more dilute (hypotonic)
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Hypothesis: Temperature of water affects the time taken for salt to dissolve Introduction: In this is will be doing a coursework an experiment in which I will be trying to prove my hypothesis? I will do a set of trial experiment and a main one which I will be trying different temperature‚ which I can prove that this will work and to make sure I get hang of it when I do my real experiment. I will also draw a set of graphs in which I can show which can show if this proves my hypothesis. Important
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Spilled Salt Rape is a more and more usual in the everyday life. How tragic and hard it is for the victim‚ but what about the criminal’s family‚ friends‚ parents? The shame and quilt one may feel. Unanswered questions‚ how did my son come to this? Why? What will people think? Spilled Salt is a good example of such havoc a rape might leave to the family. Spilled Salt is an American shorty story published by the author Barbara Neely. The story takes place in America where the loving mother‚ Myrna
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Salt Case Study Salt and Food We all need a little salt because it helps keep your body fluids at the right concentration. However‚ the majority of us eat more salt than we need. On average‚ people in the UK eat about 8.1g of salt a day. Even though it doesn’t sound like a lot‚ to reduce the risk of disease‚ adults should not be eating more than 6g of salt per day. A main source of salt is table salt. Your body only needs 1/4 teaspoon of salt every day. Salt is naturally found in foods but
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Ammonia and Its Salts 1. Ammonia‚ NH3 is a very important compound in industry. 2. The main uses of ammonia: a) To manufacture nitrogenous fertilizers such as ammonium sulphate‚ ammonium nitrate and urea b) The liquid form is used as a cooling agent (refrigerant) in refrigerators c) As a raw material for the manufacture of nitric acid in the Ostwald process d) To be converted into nitric acid used for making explosives e) As an alkali to prevent the coagulation of latex
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Ben Zaré 9MK Biology Investigation - Osmosis in Potato Cells 9/7/04 Section 1 Planning Aim What is the aim of your experiment? What do you want to find out? The aim of this experiment is to investigate how potato tissue changes when placed in sucrose solution of different concentrations. Therefore‚ I want to find out if and how osmosis differs‚ when the concentration is changed. Variables What is the variable you are going to change in the experiment?
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Chapter 8 – Water and Minerals Chapter Learning Objectives 8.1 Describe the body’s water sources and routes of water loss‚ and name factors that influence the need for water. 8.2 Compare and contrast the health effects of various sources of fluid. 8.3 Discuss why electrolyte balance is critical for the health of the body. 8.4 Identify the major minerals important in human nutrition and their physiological roles in the body‚ the consequences of deficiencies‚ and their most important food sources
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