High school biology
Learn high school biology using videos, articles, and NGSS-aligned practice. Explore the fundamentals of cells, organism growth and development, photosynthesis and cellular respiration, molecular and classical genetics, natural selection and evolution, biodiversity and human impacts, and ecology.
10 units85 videos10 hours
Learn it live with a class on Puzzicle · Teachers: use it with your class
Unit 1: Ecology and natural systems
Organization of natural systems
An organism's niche
Population growth and carrying capacity
Unit 2: From cells to organisms
The cellular basis of life
Prokaryotic and eukaryotic cells
Cell structure and function
From cells to organisms
Human body systems
Homeostasis
Unit 3: The cell cycle and differentiation
The cell cycle and mitosis
Fertilization, growth, and cell differentiation
Unit 4: Energy and matter in biological systems
Biomolecules and reactions
Cellular respiration
Flow of energy and matter through ecosystems
Biogeochemical cycles
Unit 5: Gene expression and regulation
Genes, proteins, and traits
DNA structure and replication
Gene expression and regulation
Unit 6: Inheritance and variation of traits
Meiosis
Mendelian genetics
Complex patterns of inheritance
Environmental effects on phenotype
Unit 7: Mechanisms of evolution
Mechanisms of evolution
Natural selection and adaptation
Group behavior and evolution
Speciation and other patterns of evolution
Unit 8: Common ancestry and phylogeny
Evidence for evolution
The fossil record
Key events in the history of life
Phylogeny and evolutionary trees
Unit 9: Biodiversity and human impacts
Biodiversity and ecosystem services
Threats to biodiversity
Disturbance in ecosystems
Global change biology
Conservation and sustainability
Unit 10: Explore biology through simulations
Introduction to simulation-based exercises
Learn this with a class
With a class on Puzzicle this course runs as a timetable of live study parties: your batch watches together and answers the check-ins, sometimes with a teacher leading.
Course content © Khan Academy, used under CC BY-NC-SA. See this course on Khan Academy.