Biology A H020: Implementing Topical Past Paper Questions
OCR AS Biology A (H020) past-paper questions on Implementing, free. This topic is regularly examined across 5 exam sessions. Sign in for the full topic-segregated question bank and AI worksheets.
Sample questions
(a) (i) Some students collect a sample of pond water to observe under a light microscope. They pour some of the pond water onto a microscope slide. Describe how they could improve their technique in preparing the microscope slide for examination under a light microscope. [2] (ii)…
(a) A group of students was provided with a sample of an unknown liquid and various chemical reagents. It was suggested that the sample of unknown liquid contained protein. Here is the chemical test proposed by one of the students to test this suggestion: • Add 3 cm $ ^{3} $ of u…
Students carried out a practical investigation into the effect of enzyme concentration on the rate of reaction. They were provided with: - a 1% solution of the enzyme trypsin • a supply of distilled water - test tubes labelled 1–4 - $10\ cm^{3}$ syringes. (a) (i) Describe how the…
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