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A-level
Subjects
Subjects
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Subjects
Biology
AQA A-level
Past paper questions
Past papers
Biological Molecules
8 of 20 lessons
Cells
7 of 16 lessons
Organisms Exchange Substances with Their Environment
7 of 14 lessons
Genetic Information, Variation and Relationships Between Organisms
7 of 14 lessons
Energy Transfers in and Between Organisms
6 of 12 lessons
Organisms Respond to Changes in Their Internal and External Environments
9 of 14 lessons
Genetics, Populations, Evolution and Ecosystems
6 of 11 lessons
The Control of Gene Expression
6 of 9 lessons
Organisms Exchange Substances with Their Environment
7 of 14 lessons available
1
Surface Area to Volume Ratio
Lesson 1 · 3.3.1
Start
2
Gas Exchange in Single-Celled Organisms and Insects
Lesson 2 · 3.3.2
Start
3
Gas Exchange in Fish
Not available yet
4
Gas Exchange in Dicotyledonous Plants
Not available yet
5
Xerophytic Adaptations
Not available yet
6
Human Gas Exchange System
Not available yet
7
Ventilation and Lung Disease
Not available yet
8
Digestion of Carbohydrates and Proteins
Lesson 8 · 3.3.3
Start
9
Digestion of Lipids and Absorption
Not available yet
10
Haemoglobin and Oxygen Transport
Lesson 10 · 3.3.4.1
Start
11
The Heart and Cardiac Cycle
Lesson 11 · 3.3.4.1
Start
12
Blood Vessels and Tissue Fluid
Lesson 12 · 3.3.4.1
Start
13
Water Transport in Plants
Lesson 13 · 3.3.4.2
Start
14
Translocation and the Mass Flow Hypothesis
Not available yet
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