Science is the biggest section on the ATI TEAS 7 — 50 scored questions in 60 minutes — and the one that decides most borderline scores. It is weighted heavily towards human anatomy and physiology, with biology, chemistry and scientific reasoning filling out the rest. The questions reward understanding how a system works, not memorised definitions: you are usually given a scenario and asked what happens next.
What science covers on the TEAS 7
- Human anatomy and physiology — the most heavily weighted area, system by system
- Biology: cells, macromolecules, the basics of genetics and metabolism
- Chemistry: atomic structure, bonding, reactions, solutions and pH
- Scientific reasoning: designing and interpreting experiments, variables and evidence
- Reading data from tables, graphs and diagrams
Where candidates lose marks
Spending revision time evenly. A&P carries far more questions than chemistry — weight your prep to match.
Memorising structures without their function. TEAS questions almost always test what a structure does.
Confusing independent and dependent variables in an experiment question.
Treating 'scientific reasoning' as general knowledge. It tests method — controls, validity and evidence.
The free ATI TEAS 7 mock test draws from this section in the real-test mix — 40 exam-standard questions on a 49-minute clock, every answer explained and a section breakdown at the end. Your first mock is free, no sign-up.
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The other TEAS 7 sections
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