A marine biologist hypothesized that ocean acidification affects the metabolic rate of a specific species of phytoplankton (Thalassiosira pseudonana). She predicted that there would be a significant difference in the rate of oxygen production (measured in micromoles of O2 O_2\,O2 per cell per hour) between phytoplankton cultures grown in seawater at pH 7.8 (simulating acidified conditions) and those grown at pH 8.1 (control conditions). To test her prediction, she used an automated micro-respirometer to record the oxygen production rates of 20 replicate cultures in each group and carried out a statistical analysis on the collected data.
Outline three features of science that are demonstrated in the study described above.
689 exam-style questions on AQA A Level Psychology Scientific processes. Each one has a worked solution and a mark scheme showing where the marks go.