Proteins and amino acids

In this topic

• Proteins — the main substance of the cell
• Structure of an amino acid
• Non-essential and essential amino acids
• The peptide bond and the protein chain

Key terms

• Protein
• Amino acid
• Amino group
• Carboxyl group
• Radical (R)
• Amphoteric
• Peptide bond
• Condensation
• Dipeptide
• Polypeptide
• Essential amino acid
• Complete protein

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