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.
Practise AQA A Level Psychology Scientific processes with exam-style questions for A Level Psychology. 689 questions, matched to the AQA A Level Psychology (7182) specification and written in Paper 1, Paper 2 and Paper 3 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.
