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Animal coordination, control and homeostasis
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Cells and control
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Plant structures and their functions
Cells, viruses and reproduction of living things
Communication and homeostasis
Control systems
Exchange and transport in animals
Microbiology and pathogens
Energy for biological processes
Energy transfers
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Disease and the immune system
Biodiversity
Biological membranes
Classification and evolution
Cloning and biotechnology
Excretion
Genetics, populations, evolution and ecosystems
Modern genetics
Nucleotides and nucleic acids
Photosynthesis and respiration
The immune system
Transport in animals
Animal and plant responses
Cell division and cellular organisation
Cell structure
Classification and biodiversity
Ecosystems
Evolution
Homeostasis
Nervous coordination
Nucleic acids and nucleotides
Patterns of inheritance
Ecosystems, populations and sustainability
Origins of genetic variation
Stimuli
Transport in plants
Popular Chapters in All Year Groups
Global challenges
Key concepts
Inheritance, variation and evolution
Practical skills
Exchange and transport
Biology practicals
Biological molecules
Homeostasis and response
Substance exchange
Genetics
Biodiversity and variation
Cells
Working scientifically
Microbiology and pathogens
Practical skills
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Measuring techniques
Theory
Exercises
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Safety and ethics
Theory
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Designing experiments
Theory
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Methods of heating substances
Theory
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Working scientifically
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The scientific method
Theory
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Science communication and ethics
Theory
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Evaluating risks and hazards
Theory
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Collecting data
Theory
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Biology practicals
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Investigating specimens using microscopes
Theory
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Investigating the effect of pH on amylase activity
Theory
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Investigating osmosis in potatoes
Theory
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Investigating limiting factors of photosynthesis
Theory
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Global challenges
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The human genome project
Theory
Exercises
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Selective breeding
Theory
Exercises
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The process of genetic engineering - Higher
Theory
Exercises
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Sexually transmitted infections
Theory
Exercises
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Inheritance, variation and evolution
See All (18)
Meiosis, sexual and asexual reproduction
Theory
Exercises
Learning Goals
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DNA: structure, genes and chromosomes
Theory
Exercises
Learning Goals
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Inheritance and genetic diagrams
Theory
Exercises
Learning Goals
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Inherited disorders
Theory
Exercises
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Biological molecules
See All (11)
Carbohydrates: types, structure and function
Theory
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The structure and function of lipids
Theory
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The structure and function of proteins
Theory
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Enzymes: activation energy, properties and structure
Theory
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Health, disease and the development of medicines
See All (12)
Sexually transmitted infections
Theory
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How the body fights disease
Theory
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Vaccination, immunisation and medicines
Theory
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Calculating BMI and the waist-to-hip ratio
Theory
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Organisation
See All (11)
Enzymes
Theory
Exercises
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Cardiovascular disease and treatment
Theory
Exercises
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Water and mineral transport in plants
Theory
Exercises
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Human circulatory system
Theory
Exercises
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Ecology
See All (11)
Human impacts on biodiversity
Theory
Exercises
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Conservation and maintaining biodiversity
Theory
Exercises
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The carbon cycle
Theory
Exercises
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The water cycle
Theory
Exercises
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Cell biology
See All (9)
Eukaryotic and prokaryotic cells
Theory
Exercises
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Specialised animal and plant cells
Theory
Exercises
Learning Goals
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Types of microscopes and calculations
Theory
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The cell cycle and stages of mitosis
Theory
Exercises
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Ecosystems and material cycles
See All (10)
Human impacts on biodiversity
Theory
Exercises
Learning Goals
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Conservation and maintaining biodiversity
Theory
Exercises
Learning Goals
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The carbon cycle
Theory
Exercises
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The water cycle
Theory
Exercises
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Homeostasis and response
See All (11)
The nervous system and the reflex arc
Theory
Exercises
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The structure of the brain
Theory
Exercises
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Plant hormones
Theory
Exercises
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The human endocrine system
Theory
Exercises
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Organism level systems
See All (11)
The nervous system and the reflex arc
Theory
Exercises
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The structure of the brain
Theory
Exercises
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Plant hormones
Theory
Exercises
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The human endocrine system
Theory
Exercises
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Scaling up
See All (9)
Specialised animal and plant cells
Theory
Exercises
Learning Goals
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The cell cycle and stages of mitosis
Theory
Exercises
Learning Goals
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Cell differentiation, stem cells and ethics
Theory
Exercises
Learning Goals
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Water and mineral transport in plants
Theory
Exercises
Learning Goals
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Genes, inheritance and selection
See All (11)
Meiosis, sexual and asexual reproduction
Theory
Exercises
Learning Goals
Show More
Inheritance and genetic diagrams
Theory
Exercises
Learning Goals
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Inherited disorders
Theory
Exercises
Learning Goals
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Types and sources of variation
Theory
Exercises
Learning Goals
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Cell level systems
See All (8)
Eukaryotic and prokaryotic cells
Theory
Exercises
Learning Goals
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Types of microscopes and calculations
Theory
Exercises
Learning Goals
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Enzymes
Theory
Exercises
Learning Goals
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DNA: structure, genes and chromosomes
Theory
Exercises
Learning Goals
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Exchange and transport
See All (13)
Cell membrane structure and permeability
Theory
Exercises
Learning Goals
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Simple and facilitated diffusion
Theory
Exercises
Learning Goals
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Osmosis and investigating water potential
Theory
Exercises
Learning Goals
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Active transport and co-transport
Theory
Exercises
Learning Goals
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Genetics
See All (9)
Meiosis, sexual and asexual reproduction
Theory
Exercises
Learning Goals
Show More
DNA: structure, genes and chromosomes
Theory
Exercises
Learning Goals
Show More
Inheritance and genetic diagrams
Theory
Exercises
Learning Goals
Show More
Inherited disorders
Theory
Exercises
Learning Goals
Show More
Bioenergetics
See All (7)
Photosynthesis and limiting factors
Theory
Exercises
Learning Goals
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Aerobic and anaerobic respiration
Theory
Exercises
Learning Goals
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How plants use glucose from photosynthesis
Theory
Exercises
Learning Goals
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Factors limiting the rate of photosynthesis - Higher
Theory
Exercises
Learning Goals
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Natural selection and genetic modification
See All (7)
Fossils as evidence for evolution
Theory
Exercises
Learning Goals
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Selective breeding
Theory
Exercises
Learning Goals
Show More
The process of genetic engineering - Higher
Theory
Exercises
Learning Goals
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Uses of genetic engineering
Theory
Exercises
Learning Goals
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Animal coordination, control and homeostasis
See All (7)
The human endocrine system
Theory
Exercises
Learning Goals
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Hormones: adrenaline and thyroxine - Higher
Theory
Exercises
Learning Goals
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Hormones in human reproduction
Theory
Exercises
Learning Goals
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Homeostasis and blood glucose
Theory
Exercises
Learning Goals
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Key concepts
See All (6)
Eukaryotic and prokaryotic cells
Theory
Exercises
Learning Goals
Show More
Specialised animal and plant cells
Theory
Exercises
Learning Goals
Show More
Types of microscopes and calculations
Theory
Exercises
Learning Goals
Show More
Enzymes
Theory
Exercises
Learning Goals
Show More
Substance exchange
See All (11)
Surface area to volume ratio and gas exchange
Theory
Exercises
Learning Goals
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Gas exchange in fish, insects, plants and humans
Theory
Exercises
Learning Goals
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Spirometry and respiratory diseases
Theory
Exercises
Learning Goals
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Digestion, absorption and ileum structure
Theory
Exercises
Learning Goals
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Community level systems
See All (6)
The carbon cycle
Theory
Exercises
Learning Goals
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The water cycle
Theory
Exercises
Learning Goals
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The nitrogen cycle
Theory
Exercises
Learning Goals
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Trophic levels and biomass transfer
Theory
Exercises
Learning Goals
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Infection and response
See All (6)
How the body fights disease
Theory
Exercises
Learning Goals
Show More
Vaccination, immunisation and medicines
Theory
Exercises
Learning Goals
Show More
Plant defences and diseases
Theory
Exercises
Learning Goals
Show More
Communicable disease
Theory
Exercises
Learning Goals
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Biodiversity and variation
See All (8)
DNA, genes and chromosomes
Theory
Exercises
Learning Goals
Show More
RNA, protein synthesis and the genetic code
Theory
Exercises
Learning Goals
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Meiosis, genetic variation and mutations
Theory
Exercises
Learning Goals
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Factors impacting genetic diversity
Theory
Exercises
Learning Goals
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Cells
See All (8)
Eukaryotic cell structures
Theory
Exercises
Learning Goals
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Prokaryotic cell structures and viruses
Theory
Exercises
Learning Goals
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Methods of studying cells
Theory
Exercises
Learning Goals
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The cell cycle and mitosis
Theory
Exercises
Learning Goals
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Cells and control
See All (5)
The cell cycle and stages of mitosis
Theory
Exercises
Learning Goals
Show More
Cell differentiation, stem cells and ethics
Theory
Exercises
Learning Goals
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The nervous system and the reflex arc
Theory
Exercises
Learning Goals
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The structure of the brain
Theory
Exercises
Learning Goals
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Gene expression
See All (8)
Genetic mutations: Types, effects and mutagenic agents
Theory
Exercises
Learning Goals
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Stem cells: Types and use in medicine
Theory
Exercises
Learning Goals
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Factors affecting gene expression
Theory
Exercises
Learning Goals
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Cancer: risk factors, prevention and treatment
Theory
Exercises
Learning Goals
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Plant structures and their functions
See All (5)
Photosynthesis and limiting factors
Theory
Exercises
Learning Goals
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Water and mineral transport in plants
Theory
Exercises
Learning Goals
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Plant adaptations
Theory
Exercises
Learning Goals
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Plant hormones
Theory
Exercises
Learning Goals
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Cells, viruses and reproduction of living things
See All (7)
Eukaryotic cell structures
Theory
Exercises
Learning Goals
Show More
Prokaryotic cell structures and viruses
Theory
Exercises
Learning Goals
Show More
The cell cycle and mitosis
Theory
Exercises
Learning Goals
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Viral life cycle, replication and control
Theory
Exercises
Learning Goals
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Communication and homeostasis
See All (7)
Mammalian sensory receptors
Theory
Exercises
Learning Goals
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Transmission of nerve impulses
Theory
Exercises
Learning Goals
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Synaptic transmission
Theory
Exercises
Learning Goals
Show More
Homeostasis and negative feedback
Theory
Exercises
Learning Goals
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Control systems
See All (7)
Detection of light by mammals
Theory
Exercises
Learning Goals
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Transmission of nerve impulses
Theory
Exercises
Learning Goals
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The structure of the nervous system
Theory
Exercises
Learning Goals
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Effects of drugs on the nervous system
Theory
Exercises
Learning Goals
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Exchange and transport in animals
See All (4)
Specialised exchange surfaces
Theory
Exercises
Learning Goals
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Human circulatory system
Theory
Exercises
Learning Goals
Show More
Aerobic and anaerobic respiration
Theory
Exercises
Learning Goals
Show More
Factors affecting the rate of diffusion
Theory
Exercises
Learning Goals
Show More
Microbiology and pathogens
See All (7)
The immune system
Theory
Exercises
Learning Goals
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Culturing microorganisms and growth curves
Theory
Exercises
Learning Goals
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The pathogenic effect of bacteria
Theory
Exercises
Learning Goals
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Types of antibiotics and their action
Theory
Exercises
Learning Goals
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Energy for biological processes
See All (6)
Stages of photosynthesis and chloroplast structure
Theory
Exercises
Learning Goals
Show More
Factors affecting the rate of photosynthesis
Theory
Exercises
Learning Goals
Show More
Respiration: definition and glycolysis
Theory
Exercises
Learning Goals
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Aerobic respiration
Theory
Exercises
Learning Goals
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Energy transfers
See All (6)
Stages of photosynthesis and chloroplast structure
Theory
Exercises
Learning Goals
Show More
Factors affecting the rate of photosynthesis
Theory
Exercises
Learning Goals
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Respiration: definition and glycolysis
Theory
Exercises
Learning Goals
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Aerobic respiration
Theory
Exercises
Learning Goals
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Manipulating genomes
See All (6)
Gene sequencing and genome projects
Theory
Exercises
Learning Goals
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Common techniques in DNA analysis
Theory
Exercises
Learning Goals
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DNA profiling: method and uses
Theory
Exercises
Learning Goals
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Genetic engineering: principles and techniques
Theory
Exercises
Learning Goals
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Disease and the immune system
See All (5)
The immune system
Theory
Exercises
Learning Goals
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Immunity and vaccines
Theory
Exercises
Learning Goals
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Common pathogens and communicable diseases
Theory
Exercises
Learning Goals
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Human and plant defences against pathogens
Theory
Exercises
Learning Goals
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Biodiversity
See All (4)
Biodiversity: The index of diversity and agriculture
Theory
Exercises
Learning Goals
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Measuring genetic diversity
Theory
Exercises
Learning Goals
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Importance of maintaining biodiversity
Theory
Exercises
Learning Goals
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In-situ and ex-situ conservation of biodiversity
Theory
Exercises
Learning Goals
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Biological membranes
See All (4)
Cell membrane structure and permeability
Theory
Exercises
Learning Goals
Show More
Simple and facilitated diffusion
Theory
Exercises
Learning Goals
Show More
Osmosis and investigating water potential
Theory
Exercises
Learning Goals
Show More
Active transport and co-transport
Theory
Exercises
Learning Goals
Show More
Classification and evolution
See All (4)
Classification: phylogeny and taxonomy
Theory
Exercises
Learning Goals
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Evolution: variation, selection and speciation
Theory
Exercises
Learning Goals
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Types of variation, causes and calculations
Theory
Exercises
Learning Goals
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Adaptations: behavioural, physiological and anatomical
Theory
Exercises
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Cloning and biotechnology
See All (4)
Natural and artificial plant cloning
Theory
Exercises
Learning Goals
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Animal cloning: methods, uses and ethics
Theory
Exercises
Learning Goals
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Biotechnology, microorganisms and fermentation
Theory
Exercises
Learning Goals
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Immobilised enzymes in biotechnology
Theory
Exercises
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Excretion
See All (4)
Control of blood water potential
Theory
Exercises
Learning Goals
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Liver structure, function and adaptation
Theory
Exercises
Learning Goals
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Kidney structure, function and adaptation
Theory
Exercises
Learning Goals
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Kidney failure and detecting chemicals
Theory
Exercises
Learning Goals
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Genetics, populations, evolution and ecosystems
See All (4)
Inheritance: monohybrid, dihybrid and co-dominance
Theory
Exercises
Learning Goals
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Populations: The Hardy-Weinberg principle
Theory
Exercises
Learning Goals
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Evolution: variation, selection and speciation
Theory
Exercises
Learning Goals
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Changes in ecosystems
Theory
Exercises
Learning Goals
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Modern genetics
See All (4)
Stem cells: Types and use in medicine
Theory
Exercises
Learning Goals
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Factors affecting gene expression
Theory
Exercises
Learning Goals
Show More
Gene sequencing and genome projects
Theory
Exercises
Learning Goals
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Recombinant DNA technology
Theory
Exercises
Learning Goals
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Nucleotides and nucleic acids
See All (4)
Nucleic acids: DNA and RNA
Theory
Exercises
Learning Goals
Show More
DNA replication
Theory
Exercises
Learning Goals
Show More
DNA, genes and chromosomes
Theory
Exercises
Learning Goals
Show More
RNA, protein synthesis and the genetic code
Theory
Exercises
Learning Goals
Show More
Photosynthesis and respiration
See All (4)
Stages of photosynthesis and chloroplast structure
Theory
Exercises
Learning Goals
Show More
Factors affecting the rate of photosynthesis
Theory
Exercises
Learning Goals
Show More
Aerobic respiration
Theory
Exercises
Learning Goals
Show More
Anaerobic respiration in mammals, plants and yeast
Theory
Exercises
Learning Goals
Show More
The immune system
See All (4)
The immune system
Theory
Exercises
Learning Goals
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Antibodies
Theory
Exercises
Learning Goals
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Immunity and vaccines
Theory
Exercises
Learning Goals
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HIV: structure, replication and treatment
Theory
Exercises
Learning Goals
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Transport in animals
See All (4)
Haemoglobin and the Bohr effect
Theory
Exercises
Learning Goals
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Mammalian circulatory system and blood vessels
Theory
Exercises
Learning Goals
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Heart structure and the cardiac cycle
Theory
Exercises
Learning Goals
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Heart rate regulation and electrocardiograms
Theory
Exercises
Learning Goals
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Animal and plant responses
Skeletal muscles and muscle contraction
Theory
Exercises
Learning Goals
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The structure of the nervous system
Theory
Exercises
Learning Goals
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Chemical control in plants
Theory
Exercises
Learning Goals
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Cell division and cellular organisation
The cell cycle and mitosis
Theory
Exercises
Learning Goals
Show More
Meiosis, genetic variation and mutations
Theory
Exercises
Learning Goals
Show More
Stem cells: Types and use in medicine
Theory
Exercises
Learning Goals
Show More
Cell structure
Eukaryotic cell structures
Theory
Exercises
Learning Goals
Show More
Prokaryotic cell structures and viruses
Theory
Exercises
Learning Goals
Show More
Methods of studying cells
Theory
Exercises
Learning Goals
Show More
Classification and biodiversity
Types of natural selection
Theory
Exercises
Learning Goals
Show More
Classification: phylogeny and taxonomy
Theory
Exercises
Learning Goals
Show More
Biodiversity: The index of diversity and agriculture
Theory
Exercises
Learning Goals
Show More
Ecosystems
Energy and ecosystems
Theory
Exercises
Learning Goals
Show More
Human effects on ecosystems
Theory
Exercises
Learning Goals
Show More
Changes in ecosystems
Theory
Exercises
Learning Goals
Show More
Evolution
Types of natural selection
Theory
Exercises
Learning Goals
Show More
Populations: The Hardy-Weinberg principle
Theory
Exercises
Learning Goals
Show More
Evolution: variation, selection and speciation
Theory
Exercises
Learning Goals
Show More
Homeostasis
Homeostasis and negative feedback
Theory
Exercises
Learning Goals
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Control of blood glucose concentration
Theory
Exercises
Learning Goals
Show More
Control of blood water potential
Theory
Exercises
Learning Goals
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Nervous coordination
Transmission of nerve impulses
Theory
Exercises
Learning Goals
Show More
Synaptic transmission
Theory
Exercises
Learning Goals
Show More
Skeletal muscles and muscle contraction
Theory
Exercises
Learning Goals
Show More
Nucleic acids and nucleotides
Nucleic acids: DNA and RNA
Theory
Exercises
Learning Goals
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DNA replication
Theory
Exercises
Learning Goals
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ATP: structure, synthesis and hydrolysis
Theory
Exercises
Learning Goals
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Patterns of inheritance
Factors impacting genetic diversity
Theory
Exercises
Learning Goals
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Body plan development and Hox genes
Theory
Exercises
Learning Goals
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Inheritance: monohybrid, dihybrid and co-dominance
Theory
Exercises
Learning Goals
Show More
Ecosystems, populations and sustainability
Energy and ecosystems
Theory
Exercises
Learning Goals
Show More
Ecosystems: conservation and preservation
Theory
Exercises
Learning Goals
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Origins of genetic variation
Factors impacting genetic diversity
Theory
Exercises
Learning Goals
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Inheritance: monohybrid, dihybrid and co-dominance
Theory
Exercises
Learning Goals
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Stimuli
Responding to stimuli: the nervous system and reflexes
Theory
Exercises
Learning Goals
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Mammalian sensory receptors
Theory
Exercises
Learning Goals
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Transport in plants
Transport in plants - xylem
Theory
Exercises
Learning Goals
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Transport in plants - phloem
Theory
Exercises
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