Science A, Combined (9-1) - Gateway Science Suite J250 9-1: B5: Interaction between systems Topical Past Paper Questions
OCR GCSE (9-1) Science A, Combined (9-1) - Gateway Science Suite J250 (9-1) past-paper questions on B5: Interaction between systems, free. This topic is frequently examined across 6 exam sessions. Sign in for the full topic-segregated question bank and AI worksheets.
Sample questions
New medicines are developed all the time. (a) Insulin is a protein used to treat diabetes. The human stomach contains an enzyme that is specific to proteins like insulin. Suggest why it is difficult to develop an insulin medicine that is swallowed. ..... [2] (b) Which type of med…
The pH of a soil will affect the crops that grow in the soil. When the soil pH is suitable, more crops will grow. This results in a higher yield (mass of crops). The table shows data about the yield of four different crops, A, B, C and D, when grown in soils of different pH. A fa…
(a) The diagram shows two cells from a mosquito with a chromosome number of 6. Different types of cell division produced Cell A and Cell B. Cell A Cell B Name the type of cell division that produced Cell A and explain its importance for the mosquito. Type of cell division ..... […
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