IB induction        HL Physio Option Nerves & Muscles
SL Core Topics         Resp. & Photosyn.
Cells & Organelles         Plant Science
Biochemistry       .                                                            HL Genetics
Ecology                                                                              Human Reprod.
Genetics         Nucleic Acids
Health & Physiology         Excretion
Neurobiology   Experiments  

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Immune System

IB Biology - Planning Experiment. -
This is an experiment to assess Planning (b) and prepare you for planning (a)

The Optimum pH of the enzyme Catalase  (Topics 5)

Aim

To design an experiment to find the optimum pH of the enzyme catalase.

Hypothesis

 

Hints: 
You must explain using biological theory what you predict will happen. (with enzymes you must mention active sites, lock and key hypothesis, etc  (See Web Links or your text book)
Also include references to any web or text source.

Variables

 

Hints:
You must plan a "fair test".  There is always more than one variable which will speed up or slow down your reaction, e.g. temperature, surface area of solid, stirring, concentration of solutions, pH, volumes, etc.  You must keep all these other variables the same. 

But most of all you have to show the examiner that you have planned to do this.

  • List the variables which could alter the results
  • Say how you will control each one.

Apparatus

 

A list of apparatus or a diagram is needed.

Method

 

A realistic method to collect enough data is needed.  Don't collect data you are not going to use in the analysis.

Results

 

Conclusion

 

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