How to Revise Module 4: Biodiversity, evolution and disease — OCR A-Level Biology
Module 4: Biodiversity, evolution and disease is a topic in the OCR A-Level Biology specification. This guide covers learning objectives, examiner tips, common mistakes, and key terminology to help you revise effectively.
Examiner Tips for Module 4: Biodiversity, evolution and disease
- Ensure you can link practical techniques to the theoretical content of Modules 2-6.
- Practice calculating and interpreting gradients and intercepts from experimental graphs.
- Be prepared to suggest improvements to experimental designs to increase accuracy or precision.
- Familiarize yourself with the specific apparatus and techniques listed in Section 1.2.2.
- Always include units in your measurements and final answers.
Common Mistakes in Module 4: Biodiversity, evolution and disease
- Failure to use an appropriate number of significant figures in calculations.
- Inaccurate labeling of graph axes or failure to use appropriate scales.
- Inability to correctly identify and control all relevant variables in an investigation.
- Poor evaluation of experimental limitations or failure to suggest meaningful improvements.
- Incorrect calculation or interpretation of percentage error and uncertainty.
Key Marking Points
- Correct application of experimental design and identification of control variables.
- Accurate use of scientific apparatus and techniques as specified in the Practical Activity Groups (PAGs).
- Correct use of units, significant figures, and appropriate data presentation formats.
- Ability to process, analyze, and interpret qualitative and quantitative results.
- Evaluation of experimental methods, including identification of anomalies, limitations, and sources of error.
- Demonstration of competence in the Common Practical Assessment Criteria (CPAC) across 12 assessed practicals.