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Home › Bio 103, Lab 5: Ongoing change at larger scales: chemical reactions and "ferments"/enzymes ›

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Kendra's picture

Kendra and Ashley's Lab!

Submitted by Kendra on Wed, 10/10/2007 - 1:59pm.

For this lab, we had to conduct Part II: Enzyme Concentration Effects on Rate. Our hypothesis for our experiment was that the higher the concentration of enzymes, the faster the rate of reaction. For these tests, we used 20ml of Catalase B, C and D and 40 ml of stock 3% of hydrogen peroxide (H2O2). Here are our observations:

 Trial  Catalase B  Catalase C  Catalase D 
 1  8 seconds  18 seconds  24 seconds
 2  9 seconds  17 seconds  25 seconds
 3  11 seconds  16 seconds  24 seconds
 4  11 seconds  17 seconds  24 seconds

 

We found that our hypothesis was ultimately true. The higher the concentration of enzymes in a given catalase, the faster the reaction with the hydrogen peroxide (H2O2).

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