Edexcel International GCSE (9–1) Biology (Modular) 4XBI1 · 2.49
Effects of smoking
- Code
- 2.49
- In
- 2g Gas exchange
- Topic
- 2 Structure and functions in living organisms: Part 1
- Course
- International GCSE (9–1) Biology (Modular) 4XBI1
- Board
- Edexcel
Grade boundaries·Edexcel command words
Codes and titles are read by a script from Edexcel's published specification and have not been checked by a person. What each point covers is in the specification itself: Edexcel’s specification.
Points in 2g Gas exchange
- 2.40B Diffusion in gas exchange
- 2.41B Gas exchange, respiration and photosynthesis
- 2.42B Leaf adaptations for gas exchange
- 2.43B Stomata and gas exchange
- 2.44B Net gas exchange in plants, day and night
- 2.45B Practical: light and net gas exchange in leaves
- 2.46 Structure of the thorax
- 2.47 Intercostal muscles, diaphragm and ventilation
- 2.48 Adaptations of alveoli for gas exchange
- 2.49 Effects of smoking
- 2.50 Practical: breathing and exercise