Science A, Combined (9-1) - Gateway Science Suite J250 9-1: B2: Scaling up Topical Past Paper Questions
OCR GCSE (9-1) Science A, Combined (9-1) - Gateway Science Suite J250 (9-1) past-paper questions on B2: Scaling up, free. This topic is frequently examined across 6 exam sessions. Sign in for the full topic-segregated question bank and AI worksheets.
Sample questions
The picture shows the plant pathogen that causes powdery mildew. (a) Describe how powdery mildew is spread from one plant to another.
(a) A student investigates the availability of carbon dioxide on the rate of photosynthesis. They use a measuring cylinder to measure the volume of gas collected in 20 minutes. The diagram shows the apparatus they use. (i) Solution X contains a chemical that releases carbon dioxi…
(a) The diagrams show a healthy heart valve and a damaged heart valve. A patient with a damaged heart valve may have these symptoms: • shortness of breath • feeling lightheaded, dizzy or faint. Use the diagrams to explain why the damaged heart valve may cause these symptoms. (b)…
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