AQA: A-Level Biology Notes

Module 1

Biological Molecules

Module 2

Cells

Module 3

Organisms Exchange Substances with their Environment

Module 4

Genetic Information, Variation and Relationships between Organisms

Module 5

Energy Transfer in and between Organisms

Module 6

Organisms Respond to Changes in their Internal and External Environments

Module 7

Genetics, Populations, Evolution and Ecosystems

Module 8

The Control of Gene Expression

Module 1: Biological Molecules

Download Module

3.1.1

Monomers and polymers

3.1.2

Carbohydrates

3.1.3

Lipids

3.1.4.1

General properties of proteins

3.1.4.2

Many proteins are enzymes

3.1.5.1

Structure of DNA and RNA

3.1.5.2

DNA replication

3.1.6

ATP

3.1.7

Water

3.1.8

Inorganic ions

Module 2: Cells

Download Module

3.2.1.1

Structure of eukaryotic cells

3.2.1.2

Structure of prokaryotic cells and viruses

3.2.1.3

Methods of studying cells

3.2.2

All cells arise from other cells

3.2.3

Transport across cell membranes

3.2.4

Cell recognition and the immune system

Module 3: Organisms Exchange Substances with their Environment

Download Module

3.3.1

Surface area to volume ratio

3.3.2

Gas exchange

3.3.3

Digestion and absorption

3.3.4

Mass transport in animals

3.3.5

Mass transport in plants

Module 4: Genetic Information, Variation and Relationships between Organisms

Download Module

3.4.1

DNA, genes, and chromosomes

3.4.2

DNA and protein synthesis

3.4.3

Genetic diversity can arise as a result of mutation or during meiosis

3.4.4

​Genetic diversity and adaptation

3.4.5

Species and taxonomy

3.4.6

​Biodiversity within a community

3.4.7

Investigating diversity

Module 5: Energy Transfer in and between Organisms

Download Module

3.5.1

Photosynthesis

3.5.2

Respiration

3.5.3

Energy and ecosystems

3.5.4

Nutrient cycles

Module 6: Organisms Respond to Changes in their Internal and External Environments

Download Module

3.6.1.1

Survival and response

3.6.1.2

Receptors

3.6.1.3

Control of heart rate

3.6.2.1

Nerve impulses

3.6.2.2

Synaptic transmission

3.6.3

Skeletal muscles are stimulated to contract by nerves and act as effectors

3.6.4.1

Principles of homeostasis and negative feedback

3.6.4.2

Control of blood glucose concentration

3.6.4.3

Control of blood water potential

Module 7: Genetics, Populations, Evolution and Ecosystems

Download Module

3.7.1

Inheritance

3.7.2

Populations

3.7.3

Evolution may lead to speciation

3.7.4

Populations in ecosystems

Module 8: The Control of Gene Expression

Download Module

3.8.1

Alteration of the sequence of bases in DNA can alter the structure of proteins

3.8.2.1

Most of a cell's DNA is not translated

3.8.2.2

Regulation of transcription and translation

3.8.2.3

Gene expression and cancer

3.8.3

Using genome projects

3.8.4.1

Recombinant DNA technology

3.8.4.2

Differences in DNA between individuals of the same species can be exploited for identification and diagnosis of heritable conditions

3.8.4.3

Genetic fingerprinting