Characteristics of Enzymes

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  • Created by: RGV17
  • Created on: 20-08-16 16:42
What is a substrate?
The starting substance of a reaction.
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What is the substrate converted into?
The product.
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What is specific characteristic of an enzyme-substrate mechanism?
The precise shape of each enzyme will only act on one of type of substrate.
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What happens when the substrate has reacted?
The substrate no longer fits on the enzyme, so the products leave. This leaves free space for other substrates to react with the enzyme.
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What happens to the enzyme after the reaction?
The enzyme is not changed.
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How does an increase of temperature affect most chemical reactions?
They are increase in speed. Molecules move around as the temperature rises which causes more collisions to occur between the enzyme and substrate.
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What happens to the enzyme in the human body when the temperature rises above 37 degrees celsius?
The rate of enzyme-controlled reactions falls. High temperatures denature enzymes. A denatured has a different shape; they can't lock onto the substrate. Therefore it doesn't speed up the reaction.
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What is the optimum pH?
The pH at which an enzyme works best.
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Card 2

Front

What is the substrate converted into?

Back

The product.

Card 3

Front

What is specific characteristic of an enzyme-substrate mechanism?

Back

Preview of the front of card 3

Card 4

Front

What happens when the substrate has reacted?

Back

Preview of the front of card 4

Card 5

Front

What happens to the enzyme after the reaction?

Back

Preview of the front of card 5
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