ATI TEAS 7 Science Study Guide
The heaviest section on the exam. Anatomy and physiology carry the most marks, so start here.
50 questions · 60minutes on the real exam · 4 units · 27 lessons · updated July 2026
Human Anatomy and Physiology
~41% of the sectionThe body's systems, from cardiovascular to endocrine, and how each one keeps you alive.
Biology
~20% of the sectionLockedCells, genetics, macromolecules, and the microorganisms behind disease.
Chemistry
~18% of the sectionLockedAtomic structure, states of matter, reactions, solutions, and acids and bases.
Scientific Reasoning
~21% of the sectionLockedMeasurement tools, the scientific method, and reading an investigation for its evidence.
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Reading is good. Practising is better. Drill this subject with free TEAS Science practice questions, then sit the free full-length TEAS practice test to see where your score lands.