B2 3.1: Proteins, Catalysts and Enzymes

All information was taken directly from the AQA revision guide with only the key points from B2 3.1.

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  • Created by: JSpencer
  • Created on: 22-02-16 20:51
What makes protein molecules?
Long chains of amino acids.
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What can they do and what does this effect?
The can be folded into specific shapes, and the shape of the protein depends on its function
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What can proteins be?
Structural components of tissues such as muscle, hormones, antibodies and catalysts.
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What are chemical reactions controlled by?
In cells they are controlled by proteins called enzymes
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What are enzymes?
They are biological catalysts that speed up reactions
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What is vital in enzymes?
The shape of the enzyme is vital as this is where the other molecules can fit in and is called the active site.
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What is an active site?
The site on an enzyme where the reactants bind.
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What does the substrate do?
It can be held in the active site and can either be connected to another molecule or broken down.
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What is a substrate?
The material or chemical on which an enzyme acts.
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What can enzymes do?
Build large molecules from smaller ones (building starch from glucose molecules), Change one molecule into another (Convert one type of sugar into another) and break down larger molecules into smaller ones (all of the digestive system enzymes do this
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What is a catalyst?
A substance that speeds up a chemical reaction. At the end of the reaction the substance remains chemically unchanged.
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Other cards in this set

Card 2

Front

What can they do and what does this effect?

Back

The can be folded into specific shapes, and the shape of the protein depends on its function

Card 3

Front

What can proteins be?

Back

Preview of the front of card 3

Card 4

Front

What are chemical reactions controlled by?

Back

Preview of the front of card 4

Card 5

Front

What are enzymes?

Back

Preview of the front of card 5
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