Biological Molecules - Proteins

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  • Created by: KTPL
  • Created on: 21-11-16 15:51
What elements do all proteins contain?
Carbon, hydrogen, oxygen and nitrogen (CHON)
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What are the monomers of proteins?
Amino acids
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What is the polymer chain of a protein called?
Polypeptide
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What is a conjugated protein?
Have other chemicals within their structure
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What 3 things do all proteins contain?
An amino group, a carboxyl group, a variable group
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How many amino acids are there?
20
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What makes each amino acid different?
The variable (R) group
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Two amino acids join together to form...
A dipeptide
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What is the bond between the amino acids?
Peptide bond
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What type of reaction bonds the amino acids?
Condensation
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What are the 4 parts of a proteins structure?
Primary, Secondary, Tertiary, Quaternary
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What is the primary structure?
Sequence of amino acids
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What is the secondary structure?
Folding of polypeptide chain
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What two structures can be formed in the secondary structure?
Alpha helix OR Beta pleated sheet
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What is the terry structure?
Further folding into specific shape
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What stabilises the tertiary structure?
Ionic bonds, Hydrogen bonds, Disulphide bonds
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What is the quaternary structure?
More than one polypeptide chain
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At which structure can the protein denature?
Tertiary
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What two molecular shapes can proteins be?
Globular or Fibrous
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What are fibrous proteins?
Long parallel chains with cross-bridges between chains
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What is the test for proteins?
Biuret test
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In chromatography, how do you calculate the Rf value?
distance from origin to spot/distance from origin to solvent front
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Other cards in this set

Card 2

Front

What are the monomers of proteins?

Back

Amino acids

Card 3

Front

What is the polymer chain of a protein called?

Back

Preview of the front of card 3

Card 4

Front

What is a conjugated protein?

Back

Preview of the front of card 4

Card 5

Front

What 3 things do all proteins contain?

Back

Preview of the front of card 5
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