This topic compares the fine structure of Prokaryote cells, Eucaryote cells and Viruses. We explore the structure and properties of cell membranes and how the recognition of cell surface antigens has led to the evolution of the immune response.

This topic looks at the physical processes involved in exchanging substances across a cell membrane and how complex organisms have evolved elaborate organ systems in an attempt to bypass the limits of those same physical processes.

This Unit looks at energy flow through the ecosystem both at the large scale, through habitats and also within plant and animal cells in the context of Photosynthesis and Respiration.

Sensitivity is one of the defining characteristics of living organisms.

This topic looks at how animals and plants are sensitive to - and respond to - changes in the internal and external environment.

As well as the control of genetic information, this topic looks at the interplay between the genes and the environment.

About 40% of human genes are concerned with regulating other genes mediated by molecules called Transcription factors.

This topic looks at how and why most of the genes within specialised cells are turned off and the broad significance of gene regulation to arease such as stem cell therapy and diseases such as cancer.