Katalase

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CATALYZE ENZYME

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By:
Group 7
Anisya Lisdiyana
Asfarina Zumalla
Ginanjar Ummi Pratiwi
Vania Drestiana
XII IPA 10

SEKOLAH MENENGAH ATAS   NEGERI   3 SEMARANG
2009/2010
I Purpose
1. To know the function of catalyze enzyme
2. To know the factors that influence enzyme work

II Basic theory
      Enzyme is substance that is formed by organism body cells. In cells, enzyme is produced by micro peroxysok body organelle. The function of catalyze enzyme is diffract Hydrogen Peroxide (H2O2), toxic in body that is formed in digestion process.
      Hydrogen Peroxide (H2O2) is organic chemical substance that has characteristic as strong oxidator and toxic in body. Hydrogen Peroxide (H2O2) must be diffracted into water (H2O) and oxygen (O2) that are not dangerous. Peroxide diffraction is signed by bubbles.
Reaction form
H2O --> H2O + O2
Factors that influence enzyme are light, temperature, amount of CO2 and the solution pH.

III Hypothesis
Catalyze enzyme influence into H2O2 toxin diffraction

IV Variable
1. Independent variable : HCl, NaOH, temperature
2. Control variable : liver extract, potato, H2O2
3. Dependent variable : amount of gas and fire

V Tools and Ingredients:

Tools: Ingredients:
    3 pipettes 1 match HCL solution
    1 tube shelf 2 palm leaf rib   NaOH solution
    6 test tubes tissues H2O2 solution
    1 Bunsen stove 1 Beaker glass aquades
    1 knife chicken liver
    1 mortar and pastels potato
    VI Procedure
1. Prepare liver extract and slice of potato
      2. Name A, B, C, D and E to each tubes, pour the liver extract into four test tubes (1 cm, take a slice of potato into tube E
3. Give name 1, 2, 3, 4 and 5 to each tube, pour H2O2 into four test tubes (1cm
4. Pour (12ml HCl as acid into tube B
Pour (12ml NaOH as base into tube C
Heat tube D
For tube A and E, just leave it and continue into fifth step.

5. Pour the result of fourth... [continues]

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