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Pearson Edexcel International GCSE Biology (4BI1)

1 The nature and variety of living organisms

2 Structure and functions in living organisms

(a) Level of organisation

(b) Cell structure

(c) Biological molecules

(d) Movement of substances into and out of cells

(f) Respiration

(g) Gas exchange

2.40B Diffusion in gas exchange

2.41B Gas exchange in respiration and photosynthesis

2.42B Leaf adaptations for gas exchange

2.43B Stomata in gas exchange

2.44B Light intensity and net gas exchange

2.45B Light and leaf gas exchange practical

2.46 Thorax structure

2.47 Ventilation muscles

2.48 Alveoli adaptations

2.49 Biological consequences of smoking

2.50 Ventilation practical

(j) Co-ordination and response

3 Reproduction and inheritance

4 Ecology and the environment

5 Use of biological resources

6 Experimental skills

7 Mathematical skills

IGCSE/Edexcel/Biology//Concept/2 Structure and functions in living organisms/(g) Gas exchange/2.41B Gas exchange in respiration and photosynthesis

2 Structure and functions in living organisms

Syllabus: 2024
Section: 2
Level: —

Exam analysis

Most tested topics

(a) Level of organisation
(b) Cell structure
(c) Biological molecules
(d) Movement of substances into and out of cells
(e) Nutrition
(f) Respiration
(g) Gas exchange
(h) Transport
(i) Excretion
(j) Co-ordination and response