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Question
Biology
Posted 10 months ago
Once the bubbles have ceased rising, what will happen if you add more hydrogen peroxide? EXPLAIN why this will occur
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Answer from Sia
Posted 10 months ago
Answer
If you add more hydrogen peroxide after the bubbles have ceased rising, the reaction may continue, producing more bubbles, if there is still catalase enzyme present that has not been saturated or denatured.
Solution
a
Reaction Continuation: The reaction between hydrogen peroxide and catalase can continue if there is unused catalase available
b
Enzyme Saturation: If all the catalase enzyme active sites are occupied, adding more substrate will not increase the rate of reaction
c
Enzyme Denaturation: If the catalase has been denatured due to environmental conditions or has been used up, adding more hydrogen peroxide will not produce more bubbles
Key Concept
Enzyme activity and substrate concentration
Explanation
The production of bubbles in the reaction between hydrogen peroxide and catalase is dependent on the availability of active catalase enzyme and the concentration of hydrogen peroxide. If catalase is available and not saturated or denatured, adding more hydrogen peroxide will result in more oxygen bubbles being produced.

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