AP Biology is equivalent to a two-semester college introductory biology course. It covers four Big Ideas: evolution, energetics (cellular processes), information (genetics/molecular biology), and interactions (ecology/organisms).
Eight units: chemistry of life (water, macromolecules, enzymes), cell structure and function (membranes, transport, compartmentalisation), cellular energetics (photosynthesis, cell respiration), cell communication and cell cycle (signaling, mitosis, meiosis), heredity (Mendelian genetics, non-Mendelian inheritance, chromosomal basis), gene expression and regulation (DNA → RNA → protein, mutations, gene regulation, biotechnology), natural selection (evidence for evolution, Hardy-Weinberg, speciation), ecology (energy flow, population dynamics, community interactions, biodiversity).
Section I: 60 MCQs in 1h 30min (includes individual questions and sets with data/diagrams). Section II: 6 FRQs in 1h 30min (2 long-form questions including 1 on experimental design, 4 short-form). Score 1–5 (~65% score 3+). Emphasis on science practices: analysing data, explaining biological concepts, making predictions, and designing experiments.
AP Biology emphasises six science practices: concept explanation, visual representations, questioning and methods, representing data (graphs, models), statistical analysis (chi-square test, standard error), and argumentation. Students must apply these to unfamiliar scenarios — the exam rarely tests rote memorisation directly.
Less than you might think. The 2020+ curriculum redesign shifted AP Biology away from memorisation towards conceptual understanding and data analysis. You don't need to memorise all enzyme names or every step of the Krebs cycle — but you must understand the principles behind cellular processes, genetics, and evolution deeply enough to apply them in new contexts. Focus on understanding the "why" behind biological systems.
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