Loading…
Study the chemistry of life, cells, genetics, evolution, ecology, and the diversity of organisms.
This AP Biology course on Study Mondo covers 30 topics organized across 8 categories. Each topic includes detailed written explanations, worked examples, practice problems with step-by-step solutions, flashcards for review, and interactive lessons to help you master the material.
All content is completely free. Start with any category below, or jump to a specific topic that you need help with.
Take a diagnostic test covering all AP Biology units. Identify your strengths and get a personalized study plan.
Pick the plan that matches your timeline — from a 1-month build-up to a night-before review.
Jump into high-impact topics and keep your study momentum moving.
Water, biological macromolecules, and the chemical basis of life
The unique properties of water and their importance to life
Structure, function, and types of carbohydrates in biological systems
Structure and function of fats, phospholipids, and steroids
Amino acids, protein structure, and functions of proteins
~60 hours total over 4 weeks
Understand enzyme reaction rates and factors
Cell organelles, membranes, and cellular processes
Enzymes, cellular respiration, and photosynthesis
Signal transduction, cell cycle regulation, and cell division
Mendelian genetics, inheritance patterns, and chromosomal basis
DNA replication, transcription, translation, and gene regulation
DNA structure, replication process, and proofreading mechanisms
Gene transcription, RNA processing in eukaryotes, and gene expression
The genetic code, translation process, and protein synthesis
Gene regulation in prokaryotes and eukaryotes, operons, and epigenetics
Natural selection, population genetics, and evidence for evolution
Population ecology, community interactions, ecosystems, and biodiversity
Population growth, carrying capacity, and population dynamics
Species interactions, ecological niches, and community structure
Population growth and regulation
Energy flow, food chains, food webs, and biogeochemical cycles