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High school biology

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New high school biology course coming soon!

In July 2024, we're replacing this course with a brand new high school biology course aligned to NGSS! Get ready to explore the science of life, from cells to ecosystems, through all new videos, articles, and exercises.

Unit 1: Biology foundations

Biology and the scientific method: Biology foundationsImportant molecules for biology: Biology foundationsWater and life: Biology foundations
pH, acids, and bases: Biology foundations

Unit 2: Cells

Introduction to cells: CellsBasic cell structures: CellsThe cell membrane: Cells
Eukaryotic cell structures: CellsProkaryotes and eukaryotes: CellsPlant vs animal cells: Cells

Unit 3: Energy and transport

Introduction to metabolism: Energy and transportEnzymes: Energy and transportPassive and active transport: Energy and transport
Osmosis and tonicity: Energy and transportPhotosynthesis: Energy and transportCellular respiration: Energy and transport

Unit 4: Reproduction and cell division

Types of reproduction: Reproduction and cell divisionChromosome structure and numbers: Reproduction and cell divisionThe cell cycle and mitosis: Reproduction and cell division
Meiosis: Reproduction and cell divisionFertilization and development: Reproduction and cell division

Unit 5: Classical genetics

Introduction to heredity: Classical geneticsNon-Mendelian inheritance: Classical geneticsSex linkage: Classical genetics
Pedigrees: Classical genetics

Unit 6: Molecular genetics

DNA structure and replication: Molecular geneticsRNA and protein synthesis: Molecular geneticsBiotechnology: Molecular genetics

Unit 7: Evolution

Evolution and natural selection: EvolutionEvidence of evolution: EvolutionPhylogeny: Evolution

Unit 8: Human body systems

Body structure and homeostasis: Human body systemsThe circulatory and respiratory systems: Human body systemsThe musculoskeletal system: Human body systems
The digestive and excretory systems: Human body systemsThe nervous and endocrine systems: Human body systemsThe reproductive system: Human body systemsThe immune system: Human body systems

Unit 9: Ecology

Introduction to ecology: EcologyPopulation ecology: EcologyCommunity ecology: Ecology
Ecological relationships: EcologyTrophic levels: EcologyBiogeochemical cycles: EcologyHuman impact on ecosystems: Ecology
Course challengeTest your knowledge of the skills in this course.Start Course challenge
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