Proteins Revision

1
Proteins Revision

• L.O To recall info on proteins
• To identify and correct any misconceptions
• Starter
• Q) Polypeptides such as spectrin are formed from
  amino acids. Describe the structure of an amino
  acid molecule and explain how amino acids link
  together.
• 6 marks

2
Mark Scheme

1. Amino acid based on carbon with four groups
   attached
2. Amino/ NH2 and carboxyl/ COOH
3. R-group/ side chain hydrogen
4. R-group differs from one amino acid to another
5. Amino acids joined by condensation
6. Bond formed between NH2 and COOH
7. Involves removal of molecule of water
8. H from NH2 and OH from COOH

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What Do I Need to Know?

• Structure of an amino acid
• Formation of a polypeptide
• Functions of proteins
• Levels of protein structure
• Application of knowledge to unknown scenarios

Increasing in knowledge
4
Protein Structure
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Activity Options

• Pasta poster
• Past exam questions
• If I Am the Answer worksheet / glossary
• Revision mindmap