Biology - Proteins and enzymes

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  • Created by: Kalitise
  • Created on: 24-05-18 12:50
What are proteins?
Proteins are chains of amino acids.
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How does the amino sequence decide the final shape of a protein?
The order of the amino acids change the shape and function of the final protein.
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What is a gene?
A gene is a section of DNA which codes for a protein.
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Give two examples of protein groups
Structural and enzymes.
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State the properties of a catalyst.
A catalyst is a substance that speeds up a reaction while remaining unchanged.
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Define the term enzyme.
An enzyme is a biological catalyst.
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What is the active site in an enzyme?
The active site is the part of the enzyme that the substrate fits into for the reaction to take place.
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Describe the theory of the lock and key.
The lock and key theory is about enzyme action. The substrate fits into the active site (like a key in a lock) forming an enzyme-substrate complex. The reaction then takes place and the enzyme remains unchanged but the substrate is made into products
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Explain the specificity of enzymes.
The shape of the active site on an enzyme is complementary to its specific substrate(s).
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Define degradation reaction
Degradation is when larger are broken down into more than one smaller molecule in a degradation reaction.
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Describe synthesis reaction.
Synthesis is when more than one smaller molecule is joined to produce a larger molecule.
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Describe the optimum conditions for an enzyme.
Enzymes work best around body temp and around at around neutral pHs.
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Define the term denatured.
When enzymes are placed in high temperatures or very acidic/alkali pH, an enzyme becomes denatured
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Why does an enzyme become denatured and not die?
They do not die because they are not alive in the first place.
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Other cards in this set

Card 2

Front

How does the amino sequence decide the final shape of a protein?

Back

The order of the amino acids change the shape and function of the final protein.

Card 3

Front

What is a gene?

Back

Preview of the front of card 3

Card 4

Front

Give two examples of protein groups

Back

Preview of the front of card 4

Card 5

Front

State the properties of a catalyst.

Back

Preview of the front of card 5
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