TEAS Science Questions: The Highest-Weight Section, Broken Down

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The ATI TEAS 7 Science section has exactly 50 total questions.To be completed within a strict 60-minute time limit. Your exam splits into 18 questions for Anatomy & Physiology, 9 for biology, 9 for Scientific Reasoning, and 8 for chemistry.

Since Anatomy & Physiology dominates 41% of the scored exam. The best prep strategy is to prioritize the human body systems before spending your precious study hours on the lighter physical sciences.

What the TEAS Science Section Covers

Let’s be honest, opening a whole textbook to study for the TEAS science subtest is a total nightmare. It feels draining before you even turn to page one. ATI gives you exactly 60 minutes to fly through 50 questions, meaning you have a minute per prompt. The sheer speed required can cause any pre-nursing applicant to panic if they don’t have a plan. Here is a secret most generic study guides don’t tell you. Only 44 of the 50 questions count towards your final score. The other 6 are experimental pretest questions that ATI mixes in to test out new material. So you have to treat every single prompt with equal importance.

Those 44 questions are split across four specific areas as listed below.

Don’t waste your study hours trying to master complex chemistry formulas while ignoring basic body systems.You are actively throwing away easy points. Anatomy and physiology is where you win or lose the game. Knowing how these questions are weighted is the cheat code to structuring your weekly study plan.

Why Anatomy & Physiology is Your Ultimate Make-or-Break Section

Why do human body systems matter so much for your score? When you sit down on a test day, nearly half of the questions are testing your knowledge of the human body. We aren’t just talking about memorizing a few bone names. We are talking about the cardiovascular layout, digestive mechanics, respiratory pathways and the nervous system. If you don’t understand how these organ systems function, it is almost impossible to pass for competitive nursing programs. If you talk to a pre-nursing student like Sara, who is trying to clear the science subtest, she is likely going to tell you, she spent hours balancing chemical equations and stressing over cellular respiration. But the test results show a completely different story.

Think of the human body as the foundation of your future career. Nursing schools do not expect you to be an expert on day one. But they absolutely expect you to know which direction blood flows through a heart valve or how the kidneys filter fluid. Focusing on organ systems ensures you are studying the high-yield content. Instead of reading your textbook cover-to cover, study one system at a time. Master the organs, learn their primary functions, and then test your knowledge with active recalling. When you master the center of gravity first, the rest of the exam becomes less intimidating.

Biology, Chemistry, and Scientific Reasoning: The Rest of the Pie

Once you have mastered the body systems, it’s time to look at the remaining topics. Even though Anatomy and Physiology takes up the heaviest weight, you can’t ignore the other topics if you want to excel. Biology plus Scientific Reasoning adds up to forty percent of your test. In the biology area, you will tackle questions on cell structure, macromolecule and genetics. Instead of panicking over advanced biology, focus your energy on learning the difference between prokaryotic and eukaryotic cells. Master how traits are passed down through basic Punnett squares. Keep it simple and high-yield.

Next up is Scientific Reasoning. Many pre-nursing students assume this section requires memorizing dry facts, but it actually tests your critical thinking skills.ATI wants to see if you can think like a scientist. They will challenge you on how to analyze scientific data, variables and design experiments. When practicing for this section, focus on reading experimental setups and figuring out what is being tested and measured.

Finally, we have Chemistry, it’s a major source of anxiety for students, but it doesn’t need to be. Do not waste your precious study hours crying over advanced chemical equations or complex engineering theories. Make sure your study sessions are focused on basic atomic structures, simple acid-base balancing and states of matter. Once you genuinely work on these three subjects instead of stressing over them. It frees up your time and proves that getting into nursing school isn’t just a crazy dream- you can actually do this.

Take a deep breath, trust your study map, and go crush it!

How to Practice the Science Section

Now that you know the exact weight of the exam, the real question is: how do you study all this without burning out? High- leverage prep requires a strategic plan that builds real critical thinking skills. If you try reading a textbook cover-to-cover, you will be wasting your precious time and most probably, forget half of the information by test day.

Your first order of business? Ditch passive reading and turn to active recall. When you are done reviewing a body system, like the cardiovascular layout, close your notes and try to draw the pathway from memory on a blank sheet of paper. Force your brain to remember all that information.This active retrieval process creates strong neural pathways, making it much easier to remember facts under pressure.

From there,make high-quality practice questions your absolute priority. Do not wait until you feel ready to start taking practice quizzes. Start doing them on day one. When you answer a question incorrectly,skip the urge to just gloss past it. Spend time digging into the explanation to understand why the correct answer is right and why you missed the mark. Fixing these mistakes during practice turns your errors into guaranteed points on your final exam score.

TEAS Preview FAQ

Q1: What’s on the TEAS Science Section?

The TEAS 7 Science section covers four core subjects: human anatomy and physiology, biology, chemistry, and scientific reasoning. It is designed to test your understanding of applied sciences rather than actual nursing practice. On test day, you will have 50 questions to be done in exactly 60-minutes. Keep in mind that only 44 of these questions are scored, the other 6 are just experimental pretest questions.

Q2: Is the TEAS Science section hard?

Historical data shows this is exactly where most applicants lose the most points on their exam. Why? Mostly because of the heavy weight placed on anatomy and physiology. Preparing for every single subject evenly will leave you underprepared for the biggest part of the test. The good news? This section is completely beatable if you use a prioritized study plan that centers around your A&P review.

Q3: How much of TEAS Science is anatomy and physiology?

A lot. Anatomy and physiology are the most heavily represented subjects on the entire science subtest. This area accounts for 18 out of the 44 scored questions, which totals to 41% of your subtest score. That is nearly half the test. The take away? Your study plan should give the largest share of time to mastering human body systems.

Q4: How do I study for TEAS Science?

Want a winning strategy? Prioritize A&P first to secure your foundation, and then shore up your knowledge in biology, chemistry, and scientific reasoning. This means you should stop passive reading. The best technique is drilling sub-area question sets and reviewing the exact reasoning behind every explanation. Doing timed practice and full-length practice tests will gauge your actual readiness.

Q5: Does TEAS Science include chemistry and physics?

Official blueprints from ATI show that while chemistry, biology, and scientific reasoning are core parts of the blueprint, physics is entirely omitted as a distinct sub-area. The test will challenge you on physical states of matter and atomic changes rather than mechanical kinematics or velocity equations. The good news is that you do not need to stress over complex physics formulas to pass this specific test. The absence of physics means you can safely focus your study hours on the molecular and biological sciences listed in the exam objectives.

Q6: What is scientific reasoning on the TEAS?

This subtest evaluates your critical thinking more than your ability to memorize raw definitions. Expect to be challenged to interpret complex data charts, evaluate experimental designs, identify independent or dependent variables, and apply the steps of the scientific method. Because it tests how you reason about science rather than dry facts. A small amount of practice in this area can quickly secure high-yield points on your final score.

Q7: Is physics in the TEAS science section?

No, the current ATI TEAS 7 blueprint completely excludes physics from the science domain. The entire subtest is strictly within human anatomy, general biology, foundational chemistry, and scientific reasoning methodologies. The closest you will get to a physical science concept on test day is reviewing basic phase changes and atomic structures found within the introductory chemistry modules.

Q8: How many anatomy and physiology questions are on the TEAS?

You will face exactly 18 scored questions in human anatomy and physiology. This single subject accounts to 41% of your entire scored science subtest, completely outranking the other three domains combined. Because of this massive weight, your objective should be giving A&P the largest time block on your weekly study calendar.

Q9: What body systems are on the TEAS?

Questions on the exam span the entire map of human biological structures, with a heavy emphasis placed on high-weight tracks like the cardiovascular, respiratory, nervous, digestive, and immune systems. ATI expects you to understand the deep physiological mechanics of how these primary regulatory systems maintain homeostatic balance under clinical conditions.

Q10: Is TEAS science the hardest section?

Most applicants consider the science subtest to be the most challenging part of the exam, simply because of its immense content volume and academic rust. The material can easily overwhelm students who have been out of a school setting for several years. The good news is that this domain is also the most responsive to strategic preparation, meaning a targeted focus on your core weaknesses yields the biggest score gains.

Q11: How do I study A&P for the TEAS fast?

To speed up your mastery, you need to bypass passive re-reading. Focus heavily on active recall, visual systems diagrams, and rigorous practice question drilling. Analyzing the detailed explanation behind practice questions trains your brain to build memory connections much faster than scanning a textbook. This approach moves your score forward effectively without spreading your time thin.

A Quick Note on Practice Endurance

As you begin your preparation, try to schedule at least two full-length mock exams under real testing conditions. Sitting in a quiet room, timing yourself for exactly 60 minutes, and answering all 50 questions without looking at your notes is the only way to build authentic endurance. Many applicants know the core material backward and forward but score poorly simply because the fast-moving clock gets the best of them.Managing your pacing early ensures that time pressure won’t dictate your results on the test day. Treat every mock exam as a dress rehearsal for your future career. You got this!

Your Strategy for Success

Succeeding on the TEAS science subtest does not require you to have an advanced degree in biology or chemical engineering. It simply demands that you study with strategic intent. You can efficiently direct your energy to yield the biggest results by recognizing that human anatomy and physiology forms the structural center of gravity for your total score. Use active recall to test your system knowledge, drill realistic practice questions to eliminate weak spots. Treat the physical sciences as a targeted review rather than a source of stress.

You have come a long way, now take a deep breath, trust your master study map, and go claim those nursing scrubs!