Investigation of the enzymatic effects of potato cubes and fresh liver on hydrogen peroxide solution

Effect of hydrogen peroxide concentration on catalase

Hydrogen peroxide can be broken down by manganese dioxide because it has catalytic properties. Although the cells are dead, catalase still remains active. Did it bubble even less after it was microwaved? Warning is hereby given that not all Project Ideas are appropriate for all individuals or in all circumstances. Explain why there is a difference in the rates of reaction between the liver and the potato The Effect of Hydrogen Peroxide on Liver: Hypothesis, Apparatus, Method Liver contains more of the enzyme catalase, which breaks down hydrogen peroxide. Use this information as a check on the practical set-up. Related learning resources Activity Foam It! Different tissues in the body have different pHs pH is a measure of how basic or acidic a solution is. Hydrogen Peroxide Breakdown in Liver… What gas was produced by the breakdown of hydrogen peroxide? Oxygen gas was produced Describe the test that was performed in order to identify the gas. Note 1. Did they form more slowly, more quickly or at about the same rate? The organism which contained the cells is gone but the cells are still present and active in certain conditions. A larger amount of catalase lowers the activation energy, therefore speeds up the rate of reaction.

So if the apparatus is free of leaks, 22 cm3 of water should be displaced in the measuring cylinder with 10 vol hydrogen peroxide. Hydrogen peroxide can be broken down by manganese dioxide because it has catalytic properties.

Liver and potato enzyme lab answers

What is the color and consistency of this mixture? Values below 22 cm3 show that oxygen has escaped, or the hydrogen peroxide has not fully reacted, or the hydrogen peroxide concentration is not as expected. Completely disinfect any surfaces that the raw liver meat touched during this activity, and be sure to thoroughly wash your hands with soap and warm water. You should see a lot of bubbles! Compared with the untreated blended liver, did more, less or about the same amount of bubbles form? Invert it over the trough of water, with the open end under the surface of the water in the bowl, and with the end of the rubber tubing in the measuring cylinder. Objective: To investigates the enzymatic effect of various materials in the hydrogen peroxide solution. Catalase decomposes, or breaks down, hydrogen peroxide into water and oxygen. Did they form more slowly, more quickly or at about the same rate? The bubbling reaction you see is the metabolic process of decomposition, described earlier. Tube 2 was then placed in the 95C water bath for 5 minutes. Individual students may then have time to gather repeat data.

Cause a Chemical Reaction This experiment uses a yeast solution, liquid detergent, and hydrogen peroxide to produce an exciting reaction like no other! Place another section in the freezer for at least 30 minutes.

Be careful using the sharp knife.

Catalase and hydrogen peroxide reaction

Students may notice the heat if they put their hands on the conical flask. Add one drop of hydrogen peroxide to it. Place another section in the freezer for at least 30 minutes. This is because the heat degraded the catalase enzyme, making it incapable of processing the hydrogen peroxide. Discard all unused solution. How did particle size affect the rate of reaction? Why do you think this is so?

Use this information as a check on the practical set-up. Hydrogen peroxide is harmful and must be removed as soon as it is produced in the cell. Which potato sample decomposed the most hydrogen peroxide?

liver and hydrogen peroxide experiment

To the blended liver drop, add one drop of hydrogen peroxide. You are on page 1of 3 Search inside document Title: Investigation of the enzymatic effects of materials on hydrogen peroxide solution.

how does catalase break down hydrogen peroxide

Pour enough hydrogen peroxide into the cup so that potato is submerged and observe. Warning is hereby given that not all Project Ideas are appropriate for all individuals or in all circumstances. And because different body tissues have distinct environments—acidic or warm—each enzyme is tuned to work best under specific conditions.

Investigation of the enzymatic effects of potato cubes and fresh liver on hydrogen peroxide solution

Use this information as a check on the practical set-up. Collating and comparing class results allows students to look for anomalous and inconsistent data. For example, try freezing some blended liver or mixing it with salt and then test the enzyme's activity. Smaller size of particles increased the rate of reaction because smaller particles consume less energy than larger ones to break down molecules, therefore the reaction would happen faster. Ask students to explain how values over 22 cm3 could happen. Which condition s makes it work the worst? Observations and results When exposed to hydrogen peroxide, did the blended liver bubble less when mixed with either the vinegar or baking soda compared with when it was untreated? Preparation a Make just enough diluted hydrogen peroxide just before the lesson. You are observing catalase breaking hydrogen peroxide into oxygen and water.

Two 0. Liver contains more because it detoxifies substances in the body.

Rated 9/10 based on 19 review
Download
Biology Report