The TEAS Science section tests your understanding of anatomy and physiology, biology, chemistry, and scientific reasoning. This TEAS Science study guide explains exactly what to study for the ATI TEAS 7 exam, which topics matter most, and how science questions are typically asked so you can prepare efficiently without wasting time on unnecessary material.
What Is on the TEAS Science Test?
The TEAS Science section is the most content-heavy part of the exam and often the most challenging for students.
Here’s what to expect:
- Number of questions: ~44
- Time limit: ~63 minutes
- Question style:
- Conceptual
- Application-based
- Data interpretation
Most questions require you to understand how systems work, not just memorize facts.
Try our TEAS Sciene Practice Test
How Important Is Science on the TEAS Exam?
Science is the most heavily weighted section on the ATI TEAS exam, which means it has a major impact on your overall score.
Here’s why science matters so much:
- It contains the largest number of questions
- It heavily focuses on Anatomy & Physiology
- Many students underestimate how deep this section goes
Most test-takers struggle with science because they try to memorize details instead of understanding concepts, especially in anatomy and physiology.
Check our TEAS STUDY GUIDE
Major Topics Covered in TEAS Science
Anatomy and Physiology (Highest Priority)
Anatomy and Physiology (A&P) makes up the largest portion of TEAS Science questions and should be your top study priority.
Key A&P concepts include:
- Major human body systems (digestive, respiratory, cardiovascular, nervous, endocrine, urinary, immune)
- Structure vs. function relationships
- Homeostasis and how the body maintains balance
- How different systems interact and support each other
Why this matters on the TEAS:
TEAS questions often describe a real-world scenario and ask how a body system responds. If you understand how systems work together, these questions become much easier.
Biology Concepts on the TEAS Test
TEAS biology questions focus on core biological principles, not advanced theory.
Topics to study include:
- Cell structure and function
- Cellular respiration
- Basic DNA and genetics
- Mitosis vs. meiosis
The TEAS exam emphasizes understanding processes, such as how cells produce energy or divide, rather than memorizing complex terminology.
Chemistry Topics on the TEAS Exam
Chemistry on the TEAS is conceptual, not calculation-heavy.
Important chemistry topics include:
- States of matter
- Basic chemical reactions
- pH scale and acids vs. bases
- Simple atomic structure
👉 You are not expected to solve advanced equations or memorize the periodic table in detail.
Scientific Reasoning & Data Interpretation
This part of TEAS Science tests your ability to think scientifically, not your memory.
You should be comfortable with:
- Reading charts, graphs, and tables
- Understanding experimental design
- Identifying independent and dependent variables
- Distinguishing between a hypothesis and a conclusion
These questions reward logical thinking and careful reading.
What NOT to Study for TEAS Science
One of the biggest mistakes students make is overstudying unnecessary material.
You do NOT need to spend time on:
- Advanced chemistry formulas
- Complex chemical equations
- High-level biology or molecular detail
- College-level physics concepts
Focusing on these areas wastes time and increases stress without improving your score.
How TEAS Science Questions Are Worded
TEAS Science questions are usually:
- Scenario-based
- Focused on application, not recall
- Designed to test understanding, not memorization
Common traps include:
- Distractor answers that sound familiar
- Overly detailed options
- Questions that require interpreting information rather than recalling a fact
Reading carefully is just as important as knowing the content.
Common Mistakes Students Make in TEAS Science
Many students struggle with TEAS Science for the same reasons:
- Memorizing facts without understanding concepts
- Ignoring anatomy and physiology until the last minute
- Overstudying chemistry while under-studying A&P
- Skipping practice after studying
Avoiding these mistakes can dramatically improve your score.
Best Way to Study for TEAS Science
The most effective way to study for TEAS Science is to combine understanding with practice.
Recommended approach:
- Start with Anatomy & Physiology
- Study concepts, not isolated facts
- Use active recall instead of passive reading
- Practice questions after each topic
- Review mistakes and move on
If a topic isn’t heavily tested, don’t let it slow you down.
How Much Time Should You Spend on TEAS Science?
Recommended study time depends on your background:
- Strong science background: 15–20 hours
- Average background: 25–30 hours
- Weak science background: 35+ hours
Spend more time on A&P and less on chemistry.
TEAS Science Study Tips (Quick Wins)
- Focus on body systems, not isolated organs
- Learn terms in context, not definitions alone
- Review charts and diagrams carefully
- Practice explaining concepts out loud
These small changes make a big difference.
TEAS Science Study Guide FAQs
Is TEAS science the hardest section?
Yes. Most students find science the most challenging due to anatomy and physiology content.
How many anatomy questions are on the TEAS?
Anatomy and physiology make up the largest portion of the science section, often more than half.
Do I need to memorize the periodic table?
No. Only basic chemistry concepts are tested.
Is this study guide for ATI TEAS 7?
Yes. This guide is written specifically for the ATI TEAS version 7.
Can I pass TEAS science without studying?
It’s possible but risky. Most students significantly improve their score with focused preparation.
Next Step: Practice TEAS Science Questions
Once you understand what to study, the next step is applying it.
👉 Try TEAS Science practice questions to reinforce concepts
👉 Focus especially on Anatomy & Physiology practice
Studying builds understanding — practice builds confidence.
