sources:

• text: Standard textbook reference

This section covers core concepts in biology, from molecular mechanisms to whole-organism physiology. Revision works best in one direction here: read Diagnostics, attempt the practice problems cold, and only then check the worked solutions.

Prerequisites: Review the prerequisite topics before attempting this section.

• Diag Biodiversity Classification Evolution
• Diag Biological Molecules
• Diag Cells
• Diag Ecology
• Diag Exchange Transport
• Diag Genetics Dna
• Diagnostic Guide

• Understand the core principles and definitions covered in this section
• Apply key concepts to solve problems and answer exam-style questions
• Connect this material to prerequisite topics and related sections

Use the diagnostic tests to find out whether Diagnostics needs another pass before your exam, rather than revising topics you have already mastered. Use the cross-references to link related concepts across subjects where applicable.

This section provides comprehensive study materials and resources. Content is organised to build understanding progressively, from foundational concepts to advanced applications.

• Core concepts and definitions
• Worked examples with step-by-step solutions
• Practice problems for self-assessment
• Cross-references to related topics

Begin with the introductory material before progressing to advanced topics. Use the practice problems to test your understanding and identify areas for further study.

Begin with the introductory material before progressing to advanced topics. Use the practice problems to test your understanding and identify areas for further study.

graph TD
    A[Concept] --> B[Definition]
    B --> C[Example]
    C --> D[Practice]