BRAINCAKEAmino-acids
Amino acids are the monomers of proteins. All amino acids have the same basic structure: a central carbon atom (the α-carbon) bonded to four groups:
• an amino group, –NH2
• a carboxyl group, –COOH
• a hydrogen atom
• a variable side chain, the R group
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Key terms in this lesson
- condensation reaction
- A reaction in which two molecules join together by forming a chemical bond, releasing a molecule of water.
- protease
- An enzyme that hydrolyses peptide bonds in proteins, breaking them down into shorter polypeptides or amino acids.
More in Biological Molecules
- Triglycerides
- Phospholipids
- Unit Membrane
- Test for Lipids
- Hydrogen Bonding
- Disulfide Bridges
- Ionic Bonds
- Protein Structure
All 25 lessons in Biological Molecules · All Edexcel AS-level Biology topics