🔄 Examples of Polymers and Monomers:

Macromolecule	Monomer	Function
Carbohydrates	Sugars	Provide energy
Proteins	Amino acids	Build body structures
Nucleic acids	Nucleotides	Carry genetic instructions (DNA)

🧠 Mnemonic to Remember Monomers: “S.A.N.”

• S – Sugars (carbohydrates)
• A – Amino acids (proteins)
• N – Nucleotides (nucleic acids)

So next time you see a big biological molecule, ask: “Is it a SAN polymer?”

✅ Summary – What You Should Remember:

1. Biochemistry explains life through chemical reactions and compounds.
2. Life depends heavily on water.
3. Living organisms are made of organic molecules (like proteins, carbohydrates) and inorganic ones (like salts).
4. Macromolecules are large, and many are polymers made of repeating monomers.
5. The four major organic molecules—carbohydrates, proteins, lipids, nucleic acids—are essential for life.