GCSE Chemistry – Naturally Occurring Polymers – Polypeptides, DNA, and Carbohydrates (2026/27 exams)

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*** WHAT’S COVERED ***
1. Naturally occurring polymers.
2. Examples of naturally occurring polymers:
* Polypeptides (made from amino acids).
* DNA (made from nucleotides).
* Carbohydrates (made from sugars/monosaccharides).
3. Polypeptides and Proteins:
* Amino acids as monomers.
* Formation of polypeptides via condensation reactions.
* Role of proteins.
4. DNA:
* Nucleotides as monomers (four types).
* Formation of the DNA polymer and its double helix structure.
5. Carbohydrates:
* General composition (Carbon, Hydrogen, Oxygen).
* Monosaccharides and polysaccharides.

*** EXAM BOARD INFO ***
AQA – Separate/triple science only, and mostly higher tier
IGCSE Edexcel – Not in your course
Edexcel – Separate/triple science only
OCR 21st Century – Separate/triple science only
OCR Gateway – Separate/triple science only

*** CHAPTERS ***
0:00 Intro to Natural Polymers
0:15 What are Polymers?
0:27 Examples: Polypeptides, DNA, Carbohydrates
0:43 Polypeptides & Proteins
1:27 Amino Acid Structure
2:25 Amino Acid Polymerisation (Condensation)
3:14 Polymerisation Equation (Amino Acids)
3:43 DNA Structure
4:45 Carbohydrates (Sugars & Polysaccharides)

*** PLAYLISTS ***

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