Science B, Combined (9-1) - Twenty First Century Science Suite J260 9-1: B4: Using food and controlling growth Topical Past Paper Questions
OCR GCSE (9-1) Science B, Combined (9-1) - Twenty First Century Science Suite J260 (9-1) past-paper questions on B4: Using food and controlling growth, free. This topic is frequently examined across 6 exam sessions. Sign in for the full topic-segregated question bank and AI worksheets.
Sample questions
Some students are investigating photosynthesis. (a) They measure the volume of gas produced by pondweed every 60 seconds. Fig. 7.1 shows their results. Fig. 7.1 Mean volume of gas produced ( $ cm^{3} $) (i) Calculate the rate of reaction. Rate of reaction = $ \frac{1}{2} $ cm $ ^…
Some students are investigating osmosis in pieces of potato. The table shows their results. (a) Describe the method the students use to obtain these results. (b) (i) Plot the students' results on the grid and draw a line of best fit. Use the concentration of sugar solution and pe…
(a) Fig. 9.1 is a diagram of a plant cell. It is not to scale. Fig. 9.1 Write down one structure in the plant cell used in cellular respiration. (b) Starch is a large, insoluble, long-chain carbohydrate made from glucose molecules. Explain the importance of synthesising and stori…
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