Catalysis

Stephanie De La Cruz Tyrosinase is an enzyme found in Portabella mushrooms. Tyrosinase is the enzyme most responsible for the brown color of Portabella mushrooms, as it is found in larger amounts than other pigmentations. Tyrosinase is also found in Tyrosinase vesicles in the cell wall of Portabella mushrooms. Tyrosinase plays a huge role in Portabella mushrooms in that it is active in most chemical reactions including oxidation, phosphorylation and other important mechanisms within the cell. The

Experimenting with Enzymes Exploration Lab Ali Al-Husseini IB Biology 5th Period Exploration- How does increasing the substrate concentration of Hydrogen Peroxide from 0 to 15% at 3% intervals affect the enzyme catalase in yeast? In this lab, the independent variable would be the hydrogen peroxide concentration. The concentrations used in this lab will be 0%, 3%, 6%, 9%, 12%, and 15% concentration. The dependent variable is the rate or reaction which is the actual time

After completion of the transesterification reaction employed at the optimal conditions, the catalyst was collected from the reactant mixture by filtration; the catalyst was washed with hexane several times to remove the adhered oil particles, and then dried at 110°C for 2 hr. The catalyst was reused several times without further treatment to obtain FAME from WCSO. To evaluate catalyst stability, the optimum amount of CaO that was obtained by examining the operating condition was stirred with 38ml

Catalase is an enzyme that converts hydrogen peroxide into oxygen and water. Hydrogen peroxide comes from the breakdown of alcohol. Peroxide is toxic to our cells, so an enzyme is used to convert this toxic substance into two non-toxic compounds. The catalase enzyme can be found in the tissues of plants and animals. In the lab, a catalase enzyme was tested on different materials, potato and liver samples. Tests were ran to examine the effects that the catalase enzyme would have on the different samples

Factors Affecting Enzyme Action ------------------------------------------------- Term 1 Biology Nicole Goosen Table of Contents Introduction: 3 Materials: 3 Method: 4 Risk assignment: 4 Risk: 4 Personal Protective Equipment: 4 Results: 5 Discussion: 5 Conclusion: 6 Introduction: How is the human body able to digest the food that you eat? How quickly your body digests your food? This is because the human body contains enzymes that are the biological substance, a.k.a proteins

LAB EXERCISE: Diffusion and Osmosis Laboratory Objectives After completing this lab topic, you should be able to: 1. Describe the mechanism of diffusion at the molecular level. 2. List several factors that influence the rate of diffusion. 3. Explain why diffusion is important to cells. 4. Describe a selectively permeable membrane, and explain its role in osmosis. 5. Define hypotonic, hypertonic, and isotonic in terms of relative concentrations of osmotically active substances. 6. Discuss

Chemical reactions take place in all living organism. All Most all chemical reactions require an enzyme. These enzymes act as a catalyst to help regulate the rate of a chemical reaction. Three small lab experiments were performed to find the optimum pH, temperature, and concentration of the enzyme and substrate. The lab used the reaction of Catalase converting H2O2 into H2O and O2. The reaction was measured by the production of oxygen, using quaiacol that turns brown when oxidized. A spectrophotometer

What is the optimal pH for the functioning of the enzyme peroxidase? Kranz, J. BSC 110L-H009: 12 October 2016 Introduction: Enzymes are proteins that are used to catalyze a chemical reaction by reducing the activation energy necessary for the reaction to take place. Enzymes are highly specific to a particular substrate and function best at optimal pH ranges and temperatures (Bursal, 2013). Peroxidase is an enzyme which can be found in many plants and animals, such as horseradish and humans. The

Living organisms must undergo chemical reactions of cellular metabolism to maintain life. This process is performed with the help of the active site found on the enzyme. The active site is sensible to changes that are made to the enzyme, so when a factor that affects the enzyme is present, the reaction rate will be affected. In this experiment the effects of enzyme concentrations, substrate concentrations, temperature concentrations and adding an inhibitor on the enzyme’s reaction rate will be tested

Our organism is an ectotherm Our organism burrows underground to regain body temperature. Our organism is an R strategist, in summer season the worm population grows and in winter season the worm population dies. In summer the worm lives, but then when the season of winter the worm dies. Our organism's energy requirements are chemical is leaves and they absorb oxygen by their skin. Our organism is near the bottom of the food chain. Produces Get hot, room temperature, and cold temperature