Liver and Catalase Lab by Katherine Zogbi _ Student - CrossroadsFLEX https://padlet.com/krzogbi1/gkq43pieyf5j Kate Zogbi en-us 2018-02-27 20:01:56 UTC 2018-02-27 20:37:10 UTC hello@padlet.com Introduction krzogbi1 https://padlet.com/krzogbi1/gkq43pieyf5j/wish/236132110 Cells in your body produce peroxide. Unfortunately, that substance is poisonous, so your cells have to work to break down the peroxide. Catalase is also produced by the cells in your body, and works to break down the peroxide, turning it into water and oxygen. ]]> 2018-02-27 20:03:18 UTC https://padlet.com/krzogbi1/gkq43pieyf5j/wish/236132110 Hypothesis krzogbi1 https://padlet.com/krzogbi1/gkq43pieyf5j/wish/236133802 If peroxide is present in your body, ten your liver will break it down into water and oxygen]]> 2018-02-27 20:06:01 UTC https://padlet.com/krzogbi1/gkq43pieyf5j/wish/236133802 Materials krzogbi1 https://padlet.com/krzogbi1/gkq43pieyf5j/wish/236134247 The materials needed for this lab are...
5 test tubes
Room temperature water
Liver
Fire
Wooden Splint
Boiling water
Hydrogen peroxide]]> 2018-02-27 20:06:39 UTC https://padlet.com/krzogbi1/gkq43pieyf5j/wish/236134247 Procedure krzogbi1 https://padlet.com/krzogbi1/gkq43pieyf5j/wish/236134987 1. Add water to the 2cm mark in your first test tube. Then add a piece of liver. This test will be your control
2. Add water to the 2cm mark in your second test tube. Then you want to add the peroxide and liver. 
3. Add water to the 2cm mark in your third test tube  and peroxide. Next you want to light a wooden splint on fire. Once it glows red, add it to the test tube. 
4. Add water to the 2cm mark in your fourth test tube. Then you want to add the peroxide and the liver. next you want to light a wooden splint on fire. Once it glows red, add it to the test tube. 
5. Add water to the 2cm mark in your fifth test tube. Then you want to add the boiling water and liver. Next add the peroxide.

]]> 2018-02-27 20:07:56 UTC https://padlet.com/krzogbi1/gkq43pieyf5j/wish/236134987 Data/Result krzogbi1 https://padlet.com/krzogbi1/gkq43pieyf5j/wish/236140551 1. In the first test tube nothing occurred.
2. In the second test tube there was a reaction. 
3. In the third test tube a reaction occurred. We added the wooden split, and nothing occurred. 
4. In the fourth test tube, a reaction occurred. We also discovered that the substance that is given off after the reaction is oxygen, because when we add a glowing splint the substances catches fire. 
5. In the fifth test tube, a reaction did not occur, probably because the temperature was too high, causing the enzyme to denature.
 ]]> 2018-02-27 20:18:19 UTC https://padlet.com/krzogbi1/gkq43pieyf5j/wish/236140551 Discussion Questions krzogbi1 https://padlet.com/krzogbi1/gkq43pieyf5j/wish/236143831 1) What are enzymes?  What are their roles in chemical reactions?
An enzyme is a substance produced by a living organism that acts as a catalyst to create a specific biochemical reaction. Enzymes main task is to increase the rate of effectiveness in chemical reactions within cells. 
2) Describe what happened to test tube 2 when hydrogen peroxide was added to the liver.  What gas was produced?  What liquid was left behind?
There was a reaction, causing oxygen to be produced. We know the substance was oxygen because it caught fire when we added the glowing splint. Water was the substance left behind because peroxide breaks down into water and oxygen. 
3) What effect does the red hot wood have on test tube 4? WHY is the flame being produced?
The red hot wood allowed us to find that the substance given off during the reaction was oxygen. The flame is being produced because pure oxygen is flammable.
4) What effect does temperature have on the enzymes (Test tube 5)?
Increased temperature causes enzymes to denature, or not work. This is evident in test tube 5 because the boiling water and liver caused the enzymes to not work. 
]]> 2018-02-27 20:24:18 UTC https://padlet.com/krzogbi1/gkq43pieyf5j/wish/236143831 Conclusion krzogbi1 https://padlet.com/krzogbi1/gkq43pieyf5j/wish/236148968 I conclude that my hypothesis is correct, meaning that the liver will break down peroxide into water and oxygen. In addition I learned that a reaction will not occur if the temperature is too high, due to the denature of the enzymes. ]]> 2018-02-27 20:34:34 UTC https://padlet.com/krzogbi1/gkq43pieyf5j/wish/236148968