ATI TEAS Science Section – Study & Test-Taking Guide

This guide is designed to help you PASS the ATI TEAS Science section by focusing on high-yield topics, smart study strategies, and test-day tips.

1. What to Expect on the TEAS Science Section

– 44 questions
– 60 minutes
– Mostly Biology and Anatomy & Physiology
– Application-based questions (not heavy memorization)

Approximate breakdown:
– Human Anatomy & Physiology: ~55%
– Life & Physical Sciences: ~30%
– Scientific Reasoning: ~15%

2. High-Yield Body Systems to Focus On

ATI repeatedly tests the same systems. Prioritize these:

– Cardiovascular
– Respiratory
– Digestive
– Endocrine
– Nervous
– Renal (Kidneys)
– Immune System

For each system, know:
– Main function
– Major organs
– What happens when it malfunctions
– Key hormones involved (if applicable)

3. How to Study Anatomy & Physiology (The Right Way)

Do NOT memorize lists. Use cause-and-effect thinking.

Example:
Aldosterone increases sodium reabsorption → water follows sodium → blood volume increases → blood pressure increases.

ATI loves questions that ask:
– What happens if a hormone is too high or too low?
– What symptom appears when an organ fails?

4. Biology & Chemistry – What You Actually Need

You only need the basics. Skip complex math and equations.

Must-know topics:
– pH scale (acidic vs basic)
– Enzymes (lock-and-key model, effect of pH and temperature)
– DNA vs RNA
– Mitosis vs Meiosis
– Diffusion, Osmosis, Active Transport
– Photosynthesis vs Cellular Respiration (basic purpose)

5. Scientific Reasoning Tips

These questions test your ability to analyze data.

– Identify independent vs dependent variables
– Look for trends in graphs (up/down/flat)
– Correlation does NOT equal causation
– Read the question before the data

6. Test-Day Strategies (Very Important)

– Answer what is being asked, not what you think they want
– Eliminate extreme answers first (always/never)
– Use body system logic if unsure
– Do not overthink – first instinct is often correct
– Pace yourself: ~1 minute per question

7. Final 7-Day Study Plan (Optional)

Day 1: Cardiovascular + Respiratory
Day 2: Digestive + Renal
Day 3: Endocrine + Nervous
Day 4: Immune + Cellular Transport
Day 5: DNA, Mitosis/Meiosis, Enzymes
Day 6: Practice Questions + Weak Areas
Day 7: Light Review + Rest

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