Free TEAS Practice Questions

TEAS Science Practice Test (2026)

Free ATI TEAS 7 Science practice questions on anatomy, physiology, biology, chemistry, and scientific reasoning. Detailed answer explanations.

Practice Questions

These TEAS questions, answer choices, correct answers, and explanations are included in the initial HTML for crawler access.

Question: Which organ is responsible for filtering blood to produce urine?

  1. Liver
  2. Kidneys
  3. Heart
  4. Lungs

Answer: B. Kidneys

Explanation: The kidneys filter blood to remove waste products and excess water, producing urine.

Question: Which of the following correctly describes the function of the alveoli?

  1. Filter blood before it enters the heart
  2. Exchange oxygen and carbon dioxide between air and blood
  3. Produce mucus to trap pathogens
  4. Regulate body temperature

Answer: B. Exchange oxygen and carbon dioxide between air and blood

Explanation: Alveoli are tiny air sacs in the lungs where gas exchange occurs.

Question: A cell placed in a hypertonic solution will:

  1. Swell and burst
  2. Remain unchanged
  3. Shrink as water leaves the cell
  4. Take in more solutes

Answer: C. Shrink as water leaves the cell

Explanation: In a hypertonic solution, water moves out of the cell via osmosis, causing the cell to shrink (crenation).

Question: Which neurotransmitter is primarily responsible for muscle contraction at the neuromuscular junction?

  1. Dopamine
  2. Serotonin
  3. Acetylcholine
  4. Norepinephrine

Answer: C. Acetylcholine

Explanation: Acetylcholine (ACh) is released by motor neurons at the neuromuscular junction, triggering muscle contraction.

Question: What is the role of the mitral valve in the heart?

  1. It separates the right atrium from the right ventricle
  2. It prevents backflow of blood from the left ventricle to the left atrium
  3. It controls blood flow from the aorta into the body
  4. It regulates oxygen levels in the blood

Answer: B. It prevents backflow of blood from the left ventricle to the left atrium

Explanation: The mitral valve is located between the left atrium and left ventricle and prevents backward blood flow.

Question: Which type of immunity is provided by vaccination?

  1. Innate immunity
  2. Passive artificial immunity
  3. Active artificial immunity
  4. Natural passive immunity

Answer: C. Active artificial immunity

Explanation: Vaccines stimulate the immune system to produce antibodies and memory cells — this is active artificial immunity.

Question: DNA replication occurs during which phase of the cell cycle?

  1. G1 phase
  2. S phase (Synthesis)
  3. G2 phase
  4. M phase (Mitosis)

Answer: B. S phase (Synthesis)

Explanation: DNA replication occurs during the S (Synthesis) phase of interphase.

Question: The scientific method begins with:

  1. Forming a hypothesis
  2. Analyzing data
  3. Making an observation or asking a question
  4. Drawing a conclusion

Answer: C. Making an observation or asking a question

Explanation: The first step of the scientific method is observation or identifying a question.

Question: Which organ produces insulin?

  1. Liver
  2. Kidney
  3. Pancreas
  4. Adrenal gland

Answer: C. Pancreas

Explanation: Insulin is produced by beta cells in the islets of Langerhans in the pancreas.

Question: What is the primary function of red blood cells (erythrocytes)?

  1. Fight infection
  2. Clot blood
  3. Transport oxygen
  4. Produce antibodies

Answer: C. Transport oxygen

Explanation: Red blood cells contain hemoglobin, which binds to oxygen and transports it to tissues.

Question: Which of the following is NOT a function of the liver?

  1. Detoxification of harmful substances
  2. Production of bile
  3. Storage of glycogen
  4. Filtration of urine

Answer: D. Filtration of urine

Explanation: Filtration of urine is performed by the kidneys, not the liver.

Question: The central nervous system consists of:

  1. Brain and spinal cord
  2. Brain, spinal cord, and peripheral nerves
  3. All neurons in the body
  4. The autonomic nervous system

Answer: A. Brain and spinal cord

Explanation: The CNS includes only the brain and spinal cord.

Frequently Asked Questions

How many science questions are on the TEAS?

The TEAS Science section has 50 scored questions plus 6 unscored pretest items (56 total). You have 60 minutes.

What topics are on the TEAS Science section?

Three domains: (1) Human Anatomy & Physiology (~32 questions, 64%); (2) Life & Physical Sciences (~8 questions); (3) Scientific Reasoning (~10 questions).

What body systems do I need to know for the TEAS?

All major systems: cardiovascular, respiratory, digestive, urinary, nervous, endocrine, musculoskeletal, immune/lymphatic, integumentary, and reproductive.

How hard is the TEAS Science section?

Most students rate Science as the hardest section. The volume of anatomy content is the main challenge, but the same topics appear repeatedly — making it very studyable.

How should I study for TEAS anatomy and physiology?

Create flashcards for each body system. Study one system per day. Draw diagrams. Anatomy represents ~64% of the Science score.

Related TEAS resources

TEAS Study Guide · TEAS 7 Cheat Sheet · How to Pass TEAS 7

Sample TEAS questions you can read right now

These short examples reflect the style, difficulty, and rationale format used inside TEAS Academy. They live in the page source so search engines and AI assistants can index the substance of our prep — not just our marketing copy.

Sample TEAS Science item — Human Anatomy

Question: Which structure is chiefly responsible for circulating oxygen-rich blood to the body's tissues?

A. Trachea   B. Cerebellum   C. Heart   D. Pancreas

Correct answer: C. The heart acts as the central pump of the cardiovascular system, pushing oxygenated blood from the left ventricle into the aorta and onward to peripheral tissues.

Sample TEAS Math item — Percentages

Question: A medication vial contains 200 mL of solution. A nurse withdraws 15% of the total volume. How many milliliters did the nurse withdraw?

A. 10 mL   B. 20 mL   C. 25 mL   D. 30 mL

Correct answer: D. Rewrite 15% as the decimal 0.15 and multiply by the total volume: 0.15 × 200 = 30 mL.

Sample TEAS English item — Subject-Verb Agreement

Question: Choose the sentence that uses subject-verb agreement correctly.

A. The nurses on the night shift was exhausted.   B. The nurses on the night shift were exhausted.   C. The nurses on the night shift is exhausted.   D. The nurses on the night shift be exhausted.

Correct answer: B. The plural subject "nurses" requires the plural past-tense verb "were." Prepositional phrases like "on the night shift" do not change the subject.

Targeted prep for every TEAS 7 section

Begin with a free section preview to gauge where you stand. When you're ready to commit, unlock the full question library, every rationale, performance dashboards, and timed exam simulations built around the official 2026 blueprint.

ATI TEAS 7 — Questions Students Ask Us Most

How large is the TEAS Academy question library?

Members get access to more than 1,783 TEAS-style questions, organized into full mock exams and topical practice sets across all four tested areas. Every item ships with a clear written rationale so you understand not just the answer, but the reasoning behind it.

Is there a no-cost way to try the platform?

Absolutely. You can sample questions and preview practice sets without entering a card. Upgrading is only required when you're ready to unlock the entire item bank, full-length exams, score analytics, and advanced study modes.

Which subjects does the ATI TEAS 7 actually cover?

The exam is split into four content areas: Reading, Mathematics, Science, and English & Language Usage. Of the 170 questions you'll face, a portion are unscored pretest items that ATI uses to validate future test forms.

What's the most effective way to prepare?

Open with a diagnostic exam to spot weak areas, then build a routine: short daily question sets, careful rationale review, and weekly timed simulations. In the final two weeks, prioritize full-length mocks under realistic conditions to build pacing and stamina.

What counts as a passing TEAS 7 score?

Required composite scores vary by school. A 60–75% range is common for ADN programs, while selective BSN programs often look for 78%+ — placing applicants in the Proficient or Advanced tier. Always confirm the cutoff with the specific nursing program you're applying to.

How long should I expect the exam to take?

Total testing time is 209 minutes across the four sections: 64 minutes for Reading, 54 for Mathematics, 63 for Science, and 28 for English & Language Usage — 170 questions in total.

Am I allowed to retake the TEAS 7?

ATI permits retakes, but most schools enforce a minimum 30-day waiting period between attempts and cap how many times you can sit the exam during one admissions cycle. Check your program's policy before scheduling.

Is the content updated for the 2026 TEAS 7 blueprint?

Yes. Our question bank, written guides, and full-length mocks are mapped to the most recent ATI TEAS 7 (2026) test plan, so what you study mirrors what you'll see on test day.