of hydrogen peroxide Potatoes Raw potato Potato soaked in baking soda Potato soaked in baking soda Stopwatch Goggles Procedures: 1. Get all your materials. Put all the potatoes into individual test tubes. 2. Pour 3mL of hydrogen peroxide into one test tube. Watch and time how much time goes by before the reaction begins. 3. Observe and write down the time. 4. Repeat steps 2 and 3 until all the potatoes have been tested and observed. Data: Type of potato Amount of hydrogen peroxide
Premium PH Acid Base
McGonegal‚ Patricia Tosto‚ and William Ward. Pearson Baccalaureate: Standard Level Biology for the IB Diploma (Pearson International Baccalaureate Diploma: International Editions). n/a: Imprint Unknown‚ 2008. Print. “Effect of Catalase on Hydrogen Peroxide.” http://www.sciencegeek.net/Biology/biopdfs/Lab_Catalase.pdf. (25 Jan. 2013). (Add your own references)
Premium Catalase Chemical reaction Enzyme
between temperature‚ and the rate of enzyme-catalase reaction. Catalase is an enzyme that reduces the amount of activation energy required to break down hydrogen peroxide (H2O2)‚ a by-product of oxygen metabolism‚ into water (H2O) and oxygen (O) (http://www.wisegeek.org/). This reaction is refered to as the enzyme catalyzed reaction. Hydrogen peroxide substrate binds to the active site of the enzyme stressing the bonds‚ ultimately resulting in a release of oxygen and water. An increase in temperature
Premium Measurement Catalase Chemical reaction
enzyme activity Introduction In this project I will monitor the rate of activity of Catalase. Catalase is an Enzyme which in the right conditions catalyses the decomposition of Hydrogen Peroxide into water and oxygen; 2H2O2 + Catalase >>> 2H2O + O2 Catalase is found in all cells and protects them from Hydrogen Peroxide which is a dangerous waste product that needs to be eliminated. Without Catalase living things could not survive. What are Enzymes? Enzymes are found in the cells of most living
Premium Enzyme PH Chemical reaction
of this lab are used in this part‚ but in contrast to part one this part will vary the pH of the enzyme solution. The enzyme‚ again‚ is catalase‚ the substrate is hydrogen peroxide‚ and the products are the oxygen bubbles that are produced. Also‚ in this lab the time it takes for each disc to rise to the surface of the hydrogen peroxide solution determines which pH the reaction occurs the fastest at. So‚ the lowest average number of seconds for the disc to return to the surface of the solution at
Premium Enzyme Chemical reaction Catalysis
person taking the measurements may not have measured the height at exactly 20 seconds but a few moments after. · Reading and recording errors: There are errors surrounding the reading of measurements of the hydrogen peroxide solution and of the height of the froth. If the hydrogen peroxide solution was measured incorrectly by not being taken at eye level‚ this could have affected the rate of the reaction by having a varied amount of solution added to the liver. If the froth was measured incorrectly
Premium Test method Measurement Psychometrics
glasses and conduct experiment in a well-ventilated area. Day 1 Materials: Part I: steel wool (HEB‚ Target‚ Lowe’s‚ Home Depot) You can also try SOS pads. tweezers vinegar test tube (in your kit) water petri dish (in your kit) Part II: hydrogen peroxide small pieces of raw potato (yeast or beef liver may be substituted for the potato) small bowl Procedures: Part I: Reaction between iron and oxygen 1. Break off a small piece of steel wool and soak it in vinegar for at least one minute. Use
Premium Oxygen Acetic acid
the research question; do changes in temperature (from 0˚C‚ 7˚C‚ 21˚C‚ 37˚C‚ and 90˚C) have an effect on the activity of the enzyme catalase (found in beef liver) in the breakdown of hydrogen peroxide? Hypothesis If liver is placed in different temperatures of 0˚C‚ 7˚C‚ 21˚C‚ 37˚C‚ and 90˚C and hydrogen peroxide is added to each piece of liver‚ then the liver placed in 37˚C will have the largest reaction height. The liver in 90˚C will have the smallest reaction height‚ followed by the liver
Premium Catalase Enzyme Chemical reaction
ABSTRACT: This lab allows us to observe the conversion of hydrogen peroxide (H2O2) into water and oxygen gas. An enzyme known as catalase facilitates this decomposition reaction. The catalase enzyme acts as catalysis‚ helping lower the energy needed to activate the reaction while the enzyme itself is not affected. Catalase is a digestive enzyme used to break down hydrogen peroxide‚ which is a normal byproduct of cellular respiration. The reaction could take place without the help of catalase‚ but
Premium Oxygen Hydrogen peroxide Enzyme
cells use catalase to destroy cellular debris or worn out organelles. In this lab‚ we will use a catalase solution from potatoes and determine the effect of temperature and pH on the action of this enzyme. The substrate of the enzyme will be 3% hydrogen peroxide (H2O2). Catalase works by the following mechanism: 2 H2O2 ------------------>____2 H2O+ O2 Materials: • 1M HCl • 6 test tubes • hot water bath • graduated cylinder • 1M • • NaOH • test tube rack
Premium Catalase Enzyme Chemical reaction