10 questions: basic mix of animal response and behavior
20 questions: neurons and excitation
20 questions: synapses and neural circuits
20 questions: sensory receptors and sensory organs
20 questions: muscles and effectors
20 questions: reflexes and autonomic nerves
20 questions: animal behavior and learning
30 questions: original experiment and graph-style questions
50 questions: standard high school biology review
100 questions: comprehensive exam-preparation practice