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  • ph levels Essay

    476 Words  | 2 Pages

    invented the term pH to describe this effect and defined it as the -log[H1+ ]. In 1924 Sorensen realized that the pH of a solution is a function of the "activity" of the H1+ ion not the concentration and published a second paper on the subject. A better definition would be pH=-log[aH1+ ], where aH1+ denotes the activity of the H1+ ion. The activity of an ion is a function of many variables of which concentration is one. It is unfortunate that chemistry texts use a definition for pH that has been

  • The Effect Of Ph Levels On Daphnia

    1377 Words  | 6 Pages

    This experiment is being performed to show the effect of pH levels on daphnia by changing pH levels and measuring the heart rate. Introduction Daphnia are used to test water toxicity, they are a vital part of fresh water ecosystems. They are a food source for smaller fish and invertebrates and considered to be a consumer of algae and bacteria (Elbert, 2005). These small crustaceans range in size from 2-5mm long and are commonly referred to as water fleas. Daphnia belong to the group called Daphniidae

  • Effects Of Ph On Enzyme Concentration

    1236 Words  | 5 Pages

    Effects of pH on Enzyme Concentration Abstract: In this lab report you will be testing the effects pH has on the rate on enzyme reactions, you will be collecting data and evaluating things that went will and ways it could be done better to help us further understand this lab. Research Question: How does pH affect the amount of reactivate when reacted with Hydrogen peroxide on an enzyme? Hypothesis: The higher the pH the higher the reaction with Hydrogen Peroxide on the enzyme will increase. Background

  • The Effect Of Ph And Temperature On Enzyme

    1324 Words  | 6 Pages

    the effect of pH or temperature on enzyme function it is important to consider the type of enzyme being examined. While there may be an apparent effect of pH and temperature on all enzymatic function, the extent of the effect is dependent on the type of enzyme being examined. The current study is focused on the effect of temperature and pH on catechol oxidase; an enzyme that oxidises catechol. The examination of enzymatic activity under the constraints of variable temperature and pH levels are important

  • The Effect Of Ph On Enzyme Activity

    1322 Words  | 6 Pages

    The Effect of pH on Enzyme Activity Beginning Question: How does pH affect the rate of enzymatic reactions? Hypothesis: If the pH is around seven, then the rate of the reaction for the enzyme peroxidase will be the highest. This is because the optimal pH range for the enzyme peroxidase is around seven and at its optimal pH an enzyme functions the best. Variables: Independent ─ pH Dependent ─ rate of enzymatic reaction (measured by absorbance) Controlled ─ amount of enzyme used, amount of hydrogen

  • Affects of Ph on Peroxidase Enzyme

    1582 Words  | 7 Pages

    The Affects of pH on Peroxidase Enzyme Claire Bell Biology 1130 Jazmen Myers Section 36 Abstract Peroxidase is a turnip enzyme; it is used in the oxidation of hydrogen peroxide to lower activation energy, speeding up the reaction. The activity of peroxidase is highly dependent on its environment and most importantly the pH level. Peroxidase has been the focus of many recent studies and is believed to possibly reduce swelling among other things. We conducted an experiment testing

  • The Effect Of Ph On The Rate Of Photosynthesis

    3005 Words  | 13 Pages

    Top ABSTRACT This experiment demonstrates the effects of pH on the rate of photosynthesis by examining the behavior of leaf disks in different pH solutions under light. In this experiment, we used five different pH levels: pH 5, pH 6, pH 7, pH 8 and pH 9. These solutions were created using a combination of hydrochloric acid and sodium hydroxide. Spinancia olcerea or spinach, leaves were used in the experiment to examine the effects of pH on the rate of photosynthesis. The rate of photosynthesis

  • A Experiment On Water Properties And Ph

    1253 Words  | 6 Pages

    Water Properties and pH Abstract: These set of experiment are set up to observe water properties and pH in both base and acidic solution. The first 7 are testing the properties of water and its function to support life. The last 3 are experimenting the pH of different solution as well as the use of buffer in nature and medical. Some experiments is omitted or change due to error in preparation, but overall the experiment does show significant details for natural phenomenal. Introduction: the purpose

  • Effect of pH and Acid Phosphatase

    1183 Words  | 5 Pages

    The practical was carried out to investigate the effect of pH on the reaction of the enzyme acid phosphatase. Of the many functions of proteins, catalysis is by far the most vital. When catalysis is not present, most reactions in the biological systems take place very slowly to produce at an adequate pace for metabolising organism. The catalysts that take this role are called enzymes. Enzymes are the most efficient catalysts; they can enhance rate of reaction by up to 1020 over uncatalysed reactions

  • Effect Of Ph On The Activity Of Catalase

    1326 Words  | 6 Pages

    Abstract The purpose of this investigation is to discover the effect of pH on the activity of catalase, an enzyme which plays the integral role of converting hydrogen peroxide into water and oxygen, and discover which pH level it will work at the most efficient rate (the optimum). The original hypothesis states that that the optimum would be at a pH is 7, due to the liver, where catalase usually resides, being neutral. The experiment consists of introducing the catalase to hydrogen peroxide, after