The study of living things. Subdivisions of biology ; Biochemistry

The branches of biology. Embryology and developmental biology ; Stem cell research ; Anatomy and morphology ; Physiology ; Genetics and molecular biology ; Ecology ; Ethnology and sociobiology ; Evolutionary biology ; Other areas of study

The history of biology. The Greeks and natural law ; The Middle Ages ; A rebirth of scientific learning ; Francesco Redi ; Development of the microscope

What defines a living thing? Life in a single-celled organism ; Multicellular organisms ; The parts of complex organisms are controlled ; Living things are specialized ; Natural selection and adaptation ; Atoms in living molecules ; How algae and plants obtain food ; How animals obtain food ; Securing energy from food ; Carrying food and oxygen

Types of living things. Bacteria ; Archaea ; Protists ; Fungi ; Symbiosis ; Plants ; Animals

The evolution of living things. Seven functions of living things. Movement ; Sensitivity ; Respiration ; Nutrition ; Growth ; Reproduction ; Excretion

Taxonomy and genetics. Carolus Linnaeus ; Evolutionary theory ; Mechanism of heredity ; Gregor Mendel ; Modern developments.