AP Biology Diagnostic

Short topic-level assessments built around documented student misconceptions. Each diagnostic is ten items keyed to a specific wrong way of thinking; miss one and the result routes you straight to the drill that fixes it. This page covers all eight units and every one of the 65 topics in the course framework. Pick a topic to start.

Unit 1

Chemistry of Life

1.1 Structure of Water and Hydrogen Bonding Start → 1.2 Elements of Life Start → 1.3 Introduction to Biological Macromolecules Start → 1.4 Properties of Biological Macromolecules Start → 1.5 Structure and Function of Biological Macromolecules Start → 1.6 Nucleic Acids Start →

Unit 2

Cell Structure and Function

2.1 Cell Structure: Subcellular Components Start → 2.2 Cell Structure and Function Start → 2.3 Cell Size Start → 2.4 Plasma Membranes Start → 2.5 Membrane Permeability Start → 2.6 Membrane Transport Start → 2.7 Facilitated Diffusion Start → 2.8 Tonicity and Osmoregulation Start → 2.9 Mechanisms of Transport Start → 2.10 Cell Compartmentalization Start → 2.11 Origins of Cell Compartmentalization Start →

Unit 3

Cellular Energetics

3.1 Enzyme Structure Start → 3.2 Enzyme Catalysis Start → 3.3 Environmental Impacts on Enzyme Function Start → 3.4 Cellular Energy Start → 3.5 Photosynthesis Start → 3.6 Cellular Respiration Start → 3.7 Fitness Start →

Unit 4

Cell Communication and Cell Cycle

4.1 Cell Communication Start → 4.2 Introduction to Signal Transduction Start → 4.3 Signal Transduction Start → 4.4 Changes in Signal Transduction Pathways Start → 4.5 Feedback Start → 4.6 Cell Cycle Start → 4.7 Regulation of Cell Cycle Start →

Unit 5

Heredity

5.1 Meiosis Start → 5.2 Meiosis and Genetic Diversity Start → 5.3 Mendelian Genetics Start → 5.4 Non-Mendelian Genetics Start → 5.5 Environmental Effects on Phenotype Start → 5.6 Chromosomal Inheritance Start →

Unit 6

Gene Expression and Regulation

6.1 DNA and RNA Structure Start → 6.2 Replication Start → 6.3 Transcription and RNA Processing Start → 6.4 Translation Start → 6.5 Regulation of Gene Expression Start → 6.6 Gene Expression and Cell Specialization Start → 6.7 Mutations Start → 6.8 Biotechnology Start →

Unit 7

Natural Selection

7.1 Introduction to Natural Selection Start → 7.2 Natural Selection Start → 7.3 Artificial Selection Start → 7.4 Population Genetics Start → 7.5 Hardy-Weinberg Equilibrium Start → 7.6 Evidence of Evolution Start → 7.7 Common Ancestry Start → 7.8 Continuing Evolution Start → 7.9 Phylogeny Start → 7.10 Speciation Start → 7.11 Extinction Start → 7.12 Variations in Populations Start → 7.13 Origin of Life on Earth Start →

Unit 8

Ecology

8.1 Responses to the Environment Start → 8.2 Energy Flow Through Ecosystems Start → 8.3 Population Ecology Start → 8.4 Effect of Density on Populations Start → 8.5 Community Ecology Start → 8.6 Biodiversity Start → 8.7 Disruptions to Ecosystems Start →

All eight units are live. Each diagnostic is about 10 questions and takes 8 to 12 minutes. Missed items map to named misconceptions; the result page links you straight to drills that target those specific failures.