Biology archive | Science | Khan Academy

Khan Academy Biology Curriculum Archive

This page serves as a comprehensive index of the biology course materials available on Khan Academy, covering foundational chemistry through complex ecological and physiological systems.

• Chemistry of Life: Properties of water, carbohydrates, lipids, nucleic acids, thermodynamics, and enzyme function.
• Cell Biology: Prokaryotic and eukaryotic cell structures, membranes, transport mechanisms (diffusion/osmosis), and cell signaling.
• Cellular Energetics: Cellular respiration (glycolysis, citric acid cycle, oxidative phosphorylation) and photosynthesis.
• Cell Division & Genetics: Mitosis, meiosis, Mendelian genetics, chromosomal inheritance, mutations, and DNA replication/repair.
• Molecular Biology: The Central Dogma, transcription, translation, RNA processing, and biotechnology.
• Evolution: Natural selection, population genetics (Hardy-Weinberg), speciation, phylogenetic trees, and the history of life on Earth.
• Ecology: Population growth, community structure, ecosystems, biogeochemical cycles, biodiversity, and the impact of human activity and climate change.
• Physiology: Circulatory and pulmonary systems, the nervous system (neurons, action potentials, synapses), muscle function, and immunology (innate/adaptive immunity).
• Exam Preparation: Includes worked examples for 2015 free-response questions covering topics like responses to the environment, cellular respiration, phylogeny, and meiosis.