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Biology B (9BI0)
22 sections available · 63 chapters available
Free Biology B (9BI0) study notes for Pearson Edexcel A Level students. Each chapter covers a key topic with examples and practice prompts you can continue inside the thinka app.
Biological Molecules
Cells, Viruses and Reproduction of Living Things
Topic 1: Biological Molecules
Carbohydrates
Lipids
Proteins
DNA and protein synthesis
Enzymes
Inorganic ions
Water
Classification and Biodiversity
Topic 2: Cells, Viruses and Reproduction of Living Things
Eukaryotic and prokaryotic cell structure and function
Viruses
Eukaryotic cell cycle and division
Sexual reproduction in mammals
Sexual reproduction in plants
Exchange and Transport
Topic 3: Classification and Biodiversity
Classification
Natural selection
Biodiversity
Energy for Biological Processes
Topic 4: Exchange and Transport
Surface area to volume ratio
Cell transport mechanisms
Gas exchange
Circulation
Transport of gases in the blood
Transfer of materials between the circulatory system and cells
Transport in plants
Microbiology and Pathogens
Topic 5: Energy for Biological Processes
Aerobic respiration
Glycolysis
Link reaction and Krebs cycle
Oxidative phosphorylation
Anaerobic respiration
Photosynthetic pigments
Photosynthesis
Modern Genetics
Topic 6: Microbiology and Pathogens
Microbial techniques
Bacteria as pathogens
Action of antibiotics
Antibiotic resistance
Other pathogenic agents
Problems of controlling endemic diseases
Response to infection
Origins of Genetic Variation
Topic 7: Modern Genetics
Using gene sequencing
Factors affecting gene expression
Stem cells
Gene technology
Control Systems
Topic 8: Origins of Genetic Variation
Origins of genetic variation
Transfer of genetic information
Gene pools
Ecosystems
Topic 9: Control Systems
Homeostasis
Chemical control in mammals
Chemical control in plants
Structure and function of the mammalian nervous system
Nervous transmission
Effects of drugs on the nervous system
Detection of light by mammals
Control of heart rate in mammals
Osmoregulation and temperature regulation
Practical skills
Topic 10: Ecosystems
The nature of ecosystems
Energy transfer through ecosystems
Changes in ecosystems
Human effects on ecosystems
Practical and mathematical skills
Core practicals: enzymes, membranes and water potential
Core practicals: microscopy, squash preparation and dissection
Core practicals: respiration, photosynthesis and plant growth
Core practicals: microbial culture and ecological sampling
Experimental design, variables and evaluation
Data handling and statistical tests
Mathematical skills in biology
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