1.1 About the TEAS 7 Science Exam

1.1 About the TEAS 7 Science Exam

Quick Answer: The ATI TEAS 7 Science section contains 50 questions to be completed in 60 minutes. Of these 50 items, 44 are scored and 6 are unscored experimental questions. Anatomy & Physiology dominates the content at ~41% of the section, followed by Biology (~20%), Scientific Reasoning (~20%), and Chemistry (~18%). The ATI TEAS 7 (Test of Essential Academic Skills) is a standardized examination published by Assessment Technologies Institute (ATI) to evaluate the academic readiness of applicants to nursing and allied health programs. Among the four subtests—Reading, Mathematics, Science, and English and Language Usage—the Science section is the largest, with 44 of the 150 scored items (ATI).

Understanding the structural design, scoring mechanics, and domain distribution of the TEAS 7 Science subtest is the essential first step toward crafting a competitive preparation strategy.

Exam Format and Time Allocation

The TEAS 7 Science section presents a strict set of structural constraints designed to test both deep subject knowledge and rapid critical thinking under pressure:

Candidates must navigate 50 items in 60 minutes, yielding an average pace of 72 seconds per question. Question formats primarily include standard four-option multiple-choice items, alongside alternate item formats introduced in TEAS 7, such as multiple-select (select all that apply), supply answer (fill-in-the-blank), hot spot (graphical identification), and ordered response (drag-and-drop sequencing).

Content Domain Breakdown and Weighting

The Science portion of the TEAS 7 is divided into four distinct content domains. Unlike earlier iterations of the exam, TEAS 7 places an overwhelming emphasis on Human Anatomy and Physiology, while balancing fundamental concepts from general biology, chemistry, and scientific reasoning.

Human Anatomy & Physiology (~41%)

As the centerpiece of the exam, Anatomy & Physiology (A&P) requires comprehensive familiarity with all 11 major human organ systems: Integumentary, Skeletal, Muscular, Nervous, Endocrine, Cardiovascular, Lymphatic/Immune, Respiratory, Digestive, Urinary, and Reproductive. Questions test not merely anatomical identification, but physiological processes, feedback loops, cellular mechanisms, and inter-system coordination.

Biology (~20%)

The biology domain examines core biological principles that underpin health sciences. Candidates must master cellular organelles, transport mechanisms (passive vs. active), mitosis and meiosis, Mendelian genetics, DNA replication, transcription, translation, biological macromolecules (carbohydrates, lipids, proteins, nucleic acids), and basic microbiology (pathogens vs. commensal flora).

Chemistry (~18%)

The chemistry domain tests foundational concepts essential for understanding biochemistry and pharmacology. Key topics include atomic structure, isotopes, periodic table trends (electronegativity, atomic radius), chemical bonding (ionic, covalent, hydrogen), balancing chemical equations, stoichiometry concepts, phase transitions, solutions, molarity, and acid-base chemistry (pH scale and buffer systems).

Scientific Reasoning (~20%)

Scientific reasoning evaluates your ability to think like a scientist. Content includes identifying independent, dependent, and controlled variables, formulating hypotheses, interpreting experimental data, evaluating scientific conclusions, utilizing metric system conversions (SI units), and applying scientific notation.

Scoring Context and Nursing Admissions

ATI: each school sets its own cut score, and "most likely your school will want you falling into the proficient and above preparedness levels." Many schools weigh the TEAS alongside GPA and other factors (ATI). Your score report shows a Science content-area score alongside the total score.

Scoring Benchmarks

ATI's TEAS 7 score report places total scores into five Academic Preparedness Levels:

• Exemplary (92.0% – 100.0%): a very high level of overall academic preparedness.
• Advanced (80.0% – 91.3%): a high level of overall academic preparedness.
• Proficient (58.7% – 79.3%): a moderate level of overall academic preparedness.
• Basic (40.7% – 58.0%): a low level of overall academic preparedness.
• Developmental (0.0% – 40.0%): a very low level of overall academic preparedness.

Strategic Approach to Experimental (Unscored) Questions

Every TEAS 7 Science section includes 6 unscored experimental questions intermixed with the 44 scored items. These unscored pretest items do not count toward your score (ATI).

Essential Rules for Unscored Items:

• Unscored items are completely indistinguishable from scored items. They appear in the exact same multiple-choice or alternate formats.
• Unscored items are mixed in with the scored items in the 50-question block (ATI).
• Never attempt to guess which questions are unscored. Trying to identify experimental items leads to dangerous assumptions, wasted time, and potential loss of points on scored questions.

The Recommended Mindset Strategy

When encountering an exceptionally difficult, oddly phrased, or unfamiliar question during the test:

1. Maintain Emotional Control: Do not panic or lose momentum. Acknowledge that the item might be an unscored experimental question.
2. Apply Systemic Elimination: Even on complex items, eliminate clearly incorrect distractors based on basic science principles.
3. Make an Educated Guess and Move On: Select the best remaining option, flag the item if needed, and maintain your 72-second-per-question pacing strategy.