Peroxide

Discussion Enzymes are biological catalysts that help speed chemical reactions. In part A (table 2), it was seen that a normal reaction of catalase and hydrogen peroxide resulted in the release of bubbles (oxygen gas) and the release of energy in the form of heat which shows that the reaction was a exothermic reaction. The reaction was given a reaction rate of four and acted as the control with which we could compare the other results to. When testing whether or not catalase is reusable in part…

We were asked, "Where does the oxygen (O2) come from?" Hydrogen peroxide (H2O2), the liver, or both? The oxygen comes from hydrogen peroxide. The substance in the liver interacts with the hydrogen peroxide. The hydrogen peroxide is altered when two substances are combined. The oxygen gas, as a product, comes from the hydrogen peroxide. Enzymes are big proteins that speed up the rate of a chemical reaction by moving as a catalyst. A catalyst provides the environment for the reaction to occur.…

One of the main focal points in today’s society is outward beauty, which consists of hair, makeup and most importantly a white smile. In order to achieve a pearly white smile, Americans pay 1.4 billion dollars a year on non-prescription whitening products (Barlow, 2012). Most people believe that oral hygiene products were just recently invented, but historians say that Egyptians were the first people group to create a toothpaste (1teethwhitening, 2010). In early history, people would cut off…

catalase affect the initial rate of formation and total amount of O2? Introduction In water, hydrogen peroxide converts naturally into diatomic oxygen gas and water through the collision of water molecules. However, this reaction occurs at an extremely slow rate. With the presence of an enzyme, catalase, the reaction occurs at a much faster rate. This is because catalase binds with the hydrogen peroxide substrate at its transition state to weaken the covalent bonds, reducing the energy and…

APX2 as a Scavenging Mechanism for Superoxides in Chloroplast Mohammed Shilleh, Michael Stefano, Jacqueline Watkins, Kelsey Wyman Chin BSC4936 University of Florida APX2 as a Scavenging Mechanism for Superoxides in Chloroplast Introduction and Background Stress can be defined as a disruption of homeostasis. Chloroplasts are especially sensitive to stress and have many levels of defense against it. These defense mechanisms include adjustment of antenna size, thermal dissipation, photochemistry…

Effects of Temperature and Substrate on Catalyst Enzymes Ryan Smith Lab Section 030 Abstract In order to turn hydrogen peroxide into water and oxygen by using enzyme called a catalyst. To determine the effects of temperature and substrate concentrations we preformed an experiment testing the effects on the catalyst enzyme reaction. The hypothesis for our first experiment was if the substrate concentration is larger than the catalyst enzymes activity will be faster as well. The result followed…

Weakness Explanation Suggestion(s) for improvement Not measuring the temperature of the liver cubes that are the sources of the enzyme catalase. Although the hydrogen peroxide solutions were at the desired temperatures, it was uncertain whether their paired liver cubes had the same temperatures. This places concern on whether the froth height was close to being accurate, hence reliable. If the temperature of a liver were lower than the desired temperature, the enzymes would be less likely to…

Cells contain organelles they aren’t touched basis on, that also play a very important role into the cell as far development goes. Many of the organelles operate off of other to maintain its specific duties with the human body. One in particular are considered to be peroxisomes. Peroxisomes have digestive enzymes in relations to lysosomes, but they have special bodies that allow it to work in low level regions in which wouldn’t be supported elsewhere inside of the specific cell. Peroxisomes…

The authors set up an experiment using 90 bovine teeth and divided them into five groups. The experiment lasted for fourteen days. In group one, they used 10% carbamide peroxide and applied it eight hours a day. Group two used 16% carbamide peroxide which was also used eight hours a day. Group three used 35% hydrogen peroxide that was activated with an LED light which was used four times at seven day intervals. The last two…

while writing this practical report. While conducting the investigation, I had to work with my partner in a safe and considerable manner to allow the experiment to be completed safely. The person that I was collaborating with poured the hydrogen peroxide solution into the measuring cylinder with the liver it and marked the froth volume, while I timed the whole procedure. We both kept an eye out on the temperatures of the water baths and the temperature of the kidney and solution inside the test…