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Dabour HubLEARN · PRACTICE · EXPLOREEdexcel International GCSE Science Double Award (Modular) — Biology Unit 1
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Unit 2 · Lesson 1 Practical skill

Unit 2 overview: Structure and Functions in Living Organisms: Part 1

Structure and Functions in Living Organisms: Part 1 — 7 topics and 31 lessons. Work through the lessons in order, then use each lesson's Key terms and Common mistakes tabs to revise.

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Unit cover

Structure and Functions in Living Organisms: Part 1 — unit cover

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Lessons in this unit

The Human Digestive System
Figure 1 The Human Digestive System
Digestive system labelled
Figure 2 Digestive system labelled
Leaf adaptations for photosynthesis (feature and adaptation table)
Figure 3 Leaf adaptations for photosynthesis (feature and adaptation table)
Balanced chemical equation for aerobic respiration
Figure 4 Balanced chemical equation for aerobic respiration
Leaf adaptations
Figure 5 Leaf adaptations
Practical: energy content of food (burning food under water)
Figure 6 Practical: energy content of food (burning food under water)
Leaf and internal structure: levels of organisation question
Figure 7 Leaf and internal structure: levels of organisation question
Transport in plants and humans
Figure 8 Transport in plants and humans
Pathway of CO2 Molecule
Figure 9 Pathway of CO2 Molecule
Investigating photosynthesis with pondweed: variables
Figure 10 Investigating photosynthesis with pondweed: variables
Peristalsis: muscle contraction moves the bolus
Figure 11 Peristalsis: muscle contraction moves the bolus
Leaf cross-section (labelled layers)
Figure 12 Leaf cross-section (labelled layers)
TopicLessons
2.1 Levels of Organisation2.1.1 Levels of Organisation
2.2 Cell Structure2.2.1 Cell Structures
2.2.2 Animal and Plant Cells: Similarities and Differences
2.3 Biological Molecules2.3.1 Structure of Biological Molecules
2.3.2 Practical: Food Tests
2.3.3 Role of Enzymes
2.3.4 Temperature and Enzyme Function
2.3.5 Practical: Investigating Temperature and Enzyme Activity
2.3.6 pH and Enzyme Function
2.4 Movement of Substances Into and Out of Cells2.4.1 Diffusion, Osmosis and Active Transport
2.4.2 Factors Affecting the Rate of Movement of Substances
2.4.3 Practical: Investigating Diffusion and Osmosis
2.5 Nutrition2.5.1 The Process of Photosynthesis
2.5.2 Factors Affecting the Rate of Photosynthesis
2.5.3 Leaf: Structure and Adaptations
2.5.4 Plants and Mineral Ions
2.5.5 Practical: Investigating Photosynthesis
2.5.6 Balanced Diet
2.5.7 Human Alimentary Canal: Structure and Function
2.5.8 Peristalsis
2.5.9 Role of Digestive Enzymes
2.5.10 Bile
2.5.11 Small Intestine: Structure and Adaptations
2.6 Respiration2.6.1 Process of Respiration
2.6.2 Aerobic and Anaerobic Respiration
2.6.3 Practical: Investigating Respiration
2.7 Gas Exchange2.7.1 Structure of the Breathing System
2.7.2 Role of the Intercostal Muscles and Diaphragm
2.7.3 Alveoli: Adaptations for Gas Exchange
2.7.4 Smoking and the Gas Exchange System
2.7.5 Practical: The Effect of Exercise on Breathing
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