9700 · 2.3
Proteins
Welcome to your premium revision on **proteins**! These incredible **macromolecules** are the **workhorses of life**, performing an astonishing array of functions in every living organism. From catalysing reactions as **enzymes** to providing structural support and transporting substances, understanding proteins is fundamental to Cambridge Biology 9700. Let's master their intricate structures and diverse roles, preparing you for both Paper 1 and Paper 2.
Need to know
What you need to know
- Describe the general structure of an amino acid and the formation/hydrolysis of peptide bonds.
- Explain the four hierarchical levels of protein structure (primary, secondary, tertiary, quaternary) and the bonds/interactions that stabilise each.
- Compare and contrast fibrous and globular proteins, relating their specific three-dimensional structures to their diverse biological functions.
- Describe the structure of haemoglobin and collagen as examples of globular and fibrous proteins respectively.
Explanation
Proteins
- Describe the general structure of an amino acid and the formation/hydrolysis of peptide bonds.
- Explain the four hierarchical levels of protein structure (primary, secondary, tertiary, quaternary) and the bonds/interactions that stabilise each.
- Compare and contrast fibrous and globular proteins, relating their specific three-dimensional structures to their diverse biological functions.
- Describe the structure of haemoglobin and collagen as examples of globular and fibrous proteins respectively.