Combined Science 0653
Cambridge IGCSE Combined Science 0653 — B3. Biological Molecules topical past papers
150 past-paper questions on B3. Biological Molecules for Combined Science 0653.
- Questions
- 150
- Years
- 2017–2026
- With mark scheme
- 100%
- Questions 2022–2026
- 71
Anyone can browse these pages. Opening the questions and their mark schemes takes a free Momentum account.
How B3. Biological Molecules has been examined
From 2022 to 2026, B3. Biological Molecules was on Paper 3 · Theory (Core) in 9 of 14 exam series, worth about 5% of that paper’s marks.
| Paper | Questions | Share of marks | Series |
|---|---|---|---|
| Paper 1 · Multiple Choice (Core) | 31 | 2% | 14 of 14 |
| Paper 2 · Multiple Choice (Extended) | 9 | 1% | 6 of 14 |
| Paper 3 · Theory (Core) | 14 | 5% | 9 of 14 |
| Paper 4 · Theory (Extended) | 6 | 2% | 5 of 14 |
| Paper 6 · Alternative to Practical | 11 | 10% | 6 of 11 |
Momentum’s own count, over the questions in its bank for these years: a series is one exam session, every zone included, and a question filed under two chapters counts in both. Median marks per question: 1.
Filed in Momentum under: B3. Biological Molecules.
Practising in Momentum
- Every question in a chapter as one list, from every paper and year in the bank, newest first or shuffled.
- Each question turns over to its own part of the mark scheme, where the board published one.
- Narrow by paper, year, session, zone and marks, and star the questions worth keeping.
- Pick chapters, a number of questions and a time, and the exam builder draws a mock to sit and mark.
Past-paper questions and mark schemes are the copyright of Cambridge International. Momentum shows them to signed-in learners for revision and does not publish them on these pages.