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Biology (YBI11)
6 sections available · 38 chapters available
Free Biology (YBI11) study notes for Pearson Edexcel International A Level students. Each chapter covers a key topic with examples and practice prompts you can continue inside the thinka app.
Unit 1 (IAS): Molecules, Diet, Transport and Health
Biological Molecules: Water, Carbohydrates and Lipids
Mass Transport, Blood Vessels and the Cardiac Cycle
Haemoglobin and Gas Transport
Cardiovascular Disease, Risk Factors and Health Data
Gas Exchange Surfaces and Cell Membranes
Proteins and Enzymes
DNA, RNA and Protein Synthesis
Inheritance, Mutation and Genetic Screening
Unit 2 (IAS): Cells, Development, Biodiversity and Conservation
Cell Ultrastructure and Microscopy
Meiosis, Fertilisation and the Cell Cycle
Stem Cells, Gene Expression and Epigenetics
Plant Cells, Fibres and Sustainability
Plant Nutrition, Antimicrobials and Drug Testing
Classification and Measuring Biodiversity
Natural Selection, Hardy-Weinberg and Conservation
Unit 3 (IAS): Practical Skills in Biology I
IAS Core Practicals 1-9
Planning an Experiment (Unit 3)
Implementation, Measurement and Significant Figures (Unit 3)
Processing Results, Graphs and Uncertainties (Unit 3)
Unit 4 (IA2): Energy, Environment, Microbiology and Immunity
Photosynthesis and Chloroplasts
Ecosystems, Productivity and Succession
Climate Change: Evidence, Models and Effects
Microbial Growth and Culture Techniques
Pathogens and Infection
Immunity and Antibiotics
Decomposition, DNA Profiling and Forensics
Unit 5 (IA2): Respiration, Internal Environment, Coordination and Gene Technology
Respiration and Respiratory Quotient
Muscles and Movement
Heart Control, Homeostasis and Thermoregulation
The Kidney and Osmoregulation
Neurones, Synapses and Drug Action
Receptors, the Brain and Medical Imaging
Plant Coordination and Hormonal Control
Gene Technology and GMOs
Unit 6 (IA2): Practical Skills in Biology II
IA2 Core Practicals 10-18
Planning Investigations and Null Hypotheses (Unit 6)
Evaluating Methods, Errors and Uncertainties (Unit 6)
Data Analysis, Statistics and Graphs (Unit 6)
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