What plausible hypothesis could account for the origin of life?
What intermediate stages could there have been between non-living matter and the first living cells?
For what reasons is heredity an essential feature of living things?
What is needed for structures to be able to evolve by natural selection?
A2.1.1 AHL Conditions on early Earth and the pre-biotic formation of carbon compounds
A2.1.2 AHL Cells as the smallest units of self-sustaining life
A2.1.3 AHL Challenge of explaining the spontaneous origin of cells
A2.1.4 AHL Evidence for the origin of carbon compounds
A2.1.5 AHL Spontaneous formation of vesicles by coalescence of fatty acids into spherical bilayers
A2.1.6 AHL RNA as a presumed first genetic material
A2.1.7 AHL Evidence for a last universal common ancestor
A2.1.8 AHL Approaches used to estimate dates of the first living cells and the last universal common ancestor
A2.1.9 AHL "Evidence for the evolution of the last universal common ancestor in the vicinity of hydrothermal vents"
The power point presentation and the accompanying student notes are used as resources in class - together with activities, discussion, simulations and experiments.