ATI TEAS 7 Science Section:
The A&P Topics That Actually Show Up

The Science section is where most TEAS 7 test-takers lose their composite score. With 50 questions in 63 minutes and a heavy emphasis on Anatomy & Physiology, it requires the most specialized preparation of all four sections. Here's exactly what's tested — based on thousands of TEAS exams our team has completed.

TEAS 7 Science Overview

The Science section is divided into three content areas: Human Anatomy & Physiology (most questions), Biology, and Chemistry. Scientific Reasoning questions are woven throughout.

A&P Breakdown — Body Systems Tested

Human A&P makes up the largest portion of the Science section. Based on our exam data, these body systems appear most frequently:

Biology Topics

Biology questions focus on cell biology and genetics:

• Cell structure — organelles and their functions (especially mitochondria, ribosomes, nucleus, cell membrane)
• Cell division — mitosis vs meiosis, phases of each
• DNA structure — base pairing, replication, transcription, translation
• Genetics — Mendelian inheritance, dominant/recessive traits, Punnett squares
• Ecosystems, food chains, and energy flow (less heavily tested but present)

Chemistry Topics

Chemistry questions on TEAS 7 are at a high school level:

• Atomic structure — protons, neutrons, electrons, atomic number, mass number
• Periodic table — element properties, periods vs groups, trends
• Chemical bonding — ionic, covalent, hydrogen bonds
• Acids and bases — pH scale, buffers, acid-base reactions
• Biochemistry basics — carbohydrates, lipids, proteins, nucleic acids (macromolecules)

Tips for the Science Section

1. Prioritize A&P over Chemistry: More A&P questions appear than Chemistry. If your study time is limited, invest more in body systems — especially cardiovascular and nervous.
2. Use diagrams: Labeling diagrams of the heart, nephron, and neuron is more efficient than memorizing paragraphs of text.
3. Practice time management: 63 minutes for 50 questions = 1.26 minutes per question. Budget appropriately and flag questions to return to.
4. Don't panic on unfamiliar topics: Some questions cover less common material. Use process of elimination and your broader science knowledge.