B2 3.2: Factors affecting enzyme action

All information was taken directly from the AQA revision guide with only the key points from B2 3.2.

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  • Created by: JSpencer
  • Created on: 23-02-16 08:42
When are enzyme reactions similar to other reactions?
When the temperature is increased they are similar.
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When ae reactions faster?
When it is warmer.
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Why are the reactions faster?
The molecules move around quicker so collide with each other more often and with more energy.
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What happens if the enzymes get too hot?
They stop working as the active site stops working and the denature.
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What does denature mean?
Changing the shape of an enzyme so that it can no longer speed up a reaction.
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What do all enzymes work differently at?
The pH. Some work well in the stomach where it is acidic but others need to be in alkali or neutal pH conditions.
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What happens if it is the wrong pH?
The active site changes shape and the enzyme becomes denatured.
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What is optimum temperature?
This is where the reaction works as fast as possible and therefore the best.
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Other cards in this set

Card 2

Front

When ae reactions faster?

Back

When it is warmer.

Card 3

Front

Why are the reactions faster?

Back

Preview of the front of card 3

Card 4

Front

What happens if the enzymes get too hot?

Back

Preview of the front of card 4

Card 5

Front

What does denature mean?

Back

Preview of the front of card 5
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