Carbamide peroxide

Different Temperatures of Hydrogen Peroxide Affect Enzyme Activity? Purpose To test the activity of an enzyme called catalase when hydrogen peroxide is at different temperatures. Background Hydrogen peroxide (H202) is a chemical that is a by-product of many chemical reactions in living cells. Hydrogen peroxide is also extremely toxic to human cells. It can damage DNA, proteins and lipid membranes, and it may be a causing factor of cancer. If the hydrogen peroxide in our bodies is not broken down

investigate how changes in the acidic pH level of an HCl solution will affect the rate at which the catalase enzyme will break down hydrogen peroxide into its products, oxygen and water. Hypothesis If the pH of the solution is related to the reaction rate of catalase, then changing the acidity of the environment will affect the decomposition rate of hydrogen peroxide because catalase has an optimal pH level at which it functions best. Since catalase is found throughout the human body (and highly concentrated

the Decomposition of Hydrogen Peroxide with the Enzyme Catalase In order to establish the basis of the reaction, an oxygen gas collector would be setup for the collection of oxygen gas that would be released in each stage of the reaction. First, two test tubes were labeled test tubes W for the whole banana and test tube D for the diced banana. 5 ml of 3% hydrogen peroxide with the PH of 7.0 was added into two test tubes W and D. Observations of the hydrogen peroxide in the test tube were recorded

enzyme is put in a pH that is very different from the optimum pH, it can cause the enzyme to denature. Most enzymes have an optimum pH of around 7, which is fairly neutral. To ensure the experiment is a fair test, I will use the same pH of hydrogen peroxide in every test. Inhibitors - As mentioned earlier, enzymes have an active site specific to the substrate molecules. However, it is possible for other molecules similar to enzyme's substrate to bind with the enzyme's active site and therefore, inhibit

4. Discussion 4.1 Chilling injury index We previously reported that a 15-d period of cold storage at 5 °C was enough to develop CI symptoms in mature-green tomato fruit cv. Imperial (Vega-García et al., 2010). In agreement with those results, in the present study we observed CI symptoms after the fruit was stored 10 d at 5 °C, but they were more intense after 15 d of cold storage (Fig. 2). As expected, tomato fruit stored at 12 °C did not show CI symptoms (Malacrida et al., 2006; Bojórquez-Gálvez

Enzyme Catalase Activity Brontë Smith C13 06|05|2015     Abstract Five different temperatures of enzyme (spinach extract) (5°C, 20°C, 35°C, 45°C and 65°C) were added to individual measuring cylinders -each filled with 7ml of Hydrogen Peroxide (H202). The height of foam (oxygen + water) produced by the reaction was recorded for each temperature of the catalase after 30 seconds, to find at which degrees the enzyme activity had the fastest reaction rate. The data collected from this experiment

lab instructions - but before starting the lab - record your best “educated guess” about what will happen in the experiment. Give your reasons and outline any assumptions that lead you to this hypothesis. I'm guessing that the liver will turn the peroxide into something else, or make it change. Experimental Design List the materials used in this lab, and the procedure you followed. Materials: Commercially available

Abstract Catalase is an enzyme needed to break down hazardous hydrogen peroxide into nonhazardous oxygen and water. This is needed for organisms as the reaction rate of the decomposition of hydrogen peroxide is too slow to protect cells against the oxidation of hydrogen peroxide. The purpose of this experiment is to test the concentration of hydrogen peroxide on catalase and variation in temperature of catalase to find the optimal values that will produce the highest rate of products. It was hypothesized

temperature does an enzyme react at its optimum rate? Background Information: Hydrogen Peroxide is a by product of many biological and chemical functions of organism. Although it is toxic, it still remains in our cells. To counter the hydrogen peroxide we produce something called a catalase. This means that with a catalase, it can cause the chemical reaction to speed up the reaction of the Hydrogen Peroxide so that it does not come in contact with our cells. The enzymes that are being used in

Most of us have heard of antioxidants and their flabbergasting health properties. Since the onset of early scientific findings linking antioxidants to better health the supplement industry has lured consumers who want a life with fewer health complications and an increase in overall wellness. But beyond the hype of crunchy granolas, Toms, and antioxidants what should we all know about these compounds? What do they protect against and how is this accomplished? What is their relation to aging and disease