Master A-Levels with
notes, questions, mark schemes
Free Biology and Chemistry revision for AS and A-Level. Notes in the wording examiners credit, and exam-style questions with the full mark scheme.
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Revision technique, exam advice and how to read a mark scheme.
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Notes
Revise with mark scheme specific notes.
Example
Cellulose structure
Made of β-glucose joined by 1,4-glycosidic bonds.
This gives long, straight, unbranched chains that lie side by side.
Many hydrogen bonds cross-link the chains into strong microfibrils.
Questions
Test yourself with exam board style questions.
Example
Question 1 of 48[3 marks]
Cellulose is well adapted to its structural role in plant cell walls. Explain how its structure provides strength.
Dashboard
See exactly where your marks are going.
Example
Biological molecules
- Carbohydrates82%
- Proteins56%
- Enzymes31%
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