A person has not eaten for several hours, and the concentration of glucose in the blood is low. How do the pancreatic islets respond?SEER Training Modules (National Cancer Institute), Anatomy & Physiology: Pancreas, Islets of Langerhans. Outline: ATI TEAS science section, human anatomy and physiology.
Blood returning from the lungs is rich in oxygen. Through which vessels does it reach the heart, and which chamber receives it?SEER Training Modules (National Cancer Institute), Anatomy & Physiology: Structure of the Heart. Outline: ATI TEAS science section, human anatomy and physiology.
The diaphragm contracts at the start of inspiration. What follows?SEER Training Modules (National Cancer Institute), Anatomy & Physiology: Mechanics of Ventilation. Outline: ATI TEAS science section, human anatomy and physiology.
Each kidney contains over a million functional units. What are they called?SEER Training Modules (National Cancer Institute), Anatomy & Physiology: Kidneys. Outline: ATI TEAS science section, human anatomy and physiology.
The elbow is proximal to the wrist. What does "proximal" mean?SEER Training Modules (National Cancer Institute), Anatomy & Physiology: Anatomical Terminology. Outline: ATI TEAS science section, human anatomy and physiology.
Show all 50 questions (45 more)
Human anatomy and physiology, continued
How are the two lungs divided into lobes?SEER Training Modules (National Cancer Institute), Anatomy & Physiology: Review, Respiratory System. Outline: ATI TEAS science section, human anatomy and physiology.
In the peripheral nervous system, which cells produce myelin?SEER Training Modules (National Cancer Institute), Anatomy & Physiology: Nerve Tissue. Outline: ATI TEAS science section, human anatomy and physiology.
Most joints in the adult body are freely movable. What does the synovial membrane of such a joint do?SEER Training Modules (National Cancer Institute), Anatomy & Physiology: Articulations. Outline: ATI TEAS science section, human anatomy and physiology.
Skin, mucus, stomach acid and the cough reflex are examples of which kind of immunity?MedlinePlus Medical Encyclopedia (National Library of Medicine), Immune response. Outline: ATI TEAS science section, human anatomy and physiology.
What do bile salts do in digestion?SEER Training Modules (National Cancer Institute), Anatomy & Physiology: Accessory Organs. Outline: ATI TEAS science section, human anatomy and physiology.
What does antidiuretic hormone do?SEER Training Modules (National Cancer Institute), Anatomy & Physiology: Pituitary & Pineal Glands. Outline: ATI TEAS science section, human anatomy and physiology.
What is the primary function of capillaries?SEER Training Modules (National Cancer Institute), Anatomy & Physiology: Classification & Structure of Blood Vessels. Outline: ATI TEAS science section, human anatomy and physiology.
When the left ventricle contracts, which valve closes to keep blood from flowing back into the left atrium?SEER Training Modules (National Cancer Institute), Anatomy & Physiology: Structure of the Heart. Outline: ATI TEAS science section, human anatomy and physiology.
Where does a long bone grow in length?SEER Training Modules (National Cancer Institute), Anatomy & Physiology: Review, Skeletal System. Outline: ATI TEAS science section, human anatomy and physiology.
Which brain region has a key role in homeostasis because it regulates many visceral activities?SEER Training Modules (National Cancer Institute), Anatomy & Physiology: The Central Nervous System. Outline: ATI TEAS science section, human anatomy and physiology.
Which description fits a cardiac muscle cell?SEER Training Modules (National Cancer Institute), Anatomy & Physiology: Muscle Types. Outline: ATI TEAS science section, human anatomy and physiology.
Which enzyme in saliva begins the chemical digestion of starches?SEER Training Modules (National Cancer Institute), Anatomy & Physiology: Accessory Organs. Outline: ATI TEAS science section, human anatomy and physiology.
Which hormone causes the ejection of milk from the breast?SEER Training Modules (National Cancer Institute), Anatomy & Physiology: Review, Reproductive System. Outline: ATI TEAS science section, human anatomy and physiology.
Which is a function of the large intestine?SEER Training Modules (National Cancer Institute), Anatomy & Physiology: Small & Large Intestine. Outline: ATI TEAS science section, human anatomy and physiology.
Which part of a neuron carries impulses toward the cell body?SEER Training Modules (National Cancer Institute), Anatomy & Physiology: Nerve Tissue. Outline: ATI TEAS science section, human anatomy and physiology.
Which pigment in the skin defends skin cells against ultraviolet light?MedlinePlus Medical Encyclopedia (National Library of Medicine), Skin layers. Outline: ATI TEAS science section, human anatomy and physiology.
Biology 10
A muscle cell uses a great deal of chemical energy. Which organelle would you expect it to have in large numbers?National Human Genome Research Institute, Genetics Glossary: Mitochondria. Outline: ATI TEAS science section, biology.
A protein is made of one or more chains of amino acids. What is each chain called?National Human Genome Research Institute, Genetics Glossary: Amino Acids. Outline: ATI TEAS science section, biology.
A stretch of messenger RNA is 12 nucleotides long, and all of it is read. How many codons does it hold?National Human Genome Research Institute, Genetics Glossary: Codon. Outline: ATI TEAS science section, biology.
Both parents have the genotype Bb, and b is recessive. In how many offspring is the recessive trait expected to show?National Human Genome Research Institute, Genetics Glossary: Recessive. Outline: ATI TEAS science section, biology.
Most cells of the human body are diploid. Which human cells are haploid?National Human Genome Research Institute, Genetics Glossary: Haploid. Outline: ATI TEAS science section, biology.
One strand of DNA reads A-T-G-C. Which bases pair with it on the other strand, in the same order?National Human Genome Research Institute, Genetics Glossary: Base Pair. Outline: ATI TEAS science section, biology.
What is transcription?National Human Genome Research Institute, Genetics Glossary: Transcription. Outline: ATI TEAS science section, biology.
Which statement about a virus is true?National Human Genome Research Institute, Genetics Glossary: Virus. Outline: ATI TEAS science section, biology.
Which structure in a cell reads messenger RNA and joins amino acids into a chain?National Human Genome Research Institute, Genetics Glossary: Ribosome. Outline: ATI TEAS science section, biology.
Which term describes having inherited two different alleles of a genomic marker?National Human Genome Research Institute, Genetics Glossary: Heterozygous. Outline: ATI TEAS science section, biology.
Chemistry 9
A catalyst works by lowering the activation energy of a reaction. What is activation energy?U.S. Department of Energy, Office of Science, DOE Explains: Catalysts. Outline: ATI TEAS science section, chemistry.
An atom has 11 protons, 12 neutrons and 11 electrons. What is its atomic number?U.S. Department of Energy, Office of Science, DOE Explains: Protons. Outline: ATI TEAS science section, chemistry.
Carbon-12 and carbon-14 are isotopes of carbon. What do their atoms have in common?U.S. Department of Energy, Office of Science, DOE Explains: Isotopes. Outline: ATI TEAS science section, chemistry.
Compared with water that has a pH of 6, water with a pH of 5 is:U.S. Geological Survey, Water Science School: pH and Water. Outline: ATI TEAS science section, chemistry.
Which equation for making water from hydrogen and oxygen is balanced?Wikipedia, Conservation of mass, lead section. Outline: ATI TEAS science section, chemistry.
Which kind of bond is the electrostatic pull between ions of opposite charge?Wikipedia, Ionic bonding, lead section. Outline: ATI TEAS science section, chemistry.
Which particle in the nucleus of an atom has no electric charge?U.S. Department of Energy, Office of Science, DOE Explains: Neutrons. Outline: ATI TEAS science section, chemistry.
Why do cities near an ocean tend to have less extreme temperatures than cities far inland?U.S. Geological Survey, Water Science School: Specific Heat Capacity and Water. Outline: ATI TEAS science section, chemistry.
Why does table salt (NaCl) dissolve so readily in water?U.S. Geological Survey, Water Science School: Water, the Universal Solvent. Outline: ATI TEAS science section, chemistry.
Scientific reasoning 10
A sample has a mass of 3.2 kilograms. What is its mass in grams?Wikipedia, Metric prefix, lead section. Outline: ATI TEAS science section, scientific reasoning.
A standard mass of exactly 50.0 g is weighed three times on each of four balances. Which set of readings is precise but not accurate?Wikipedia, Accuracy and precision, lead section. Outline: ATI TEAS science section, scientific reasoning.
A student gives three groups of bean plants 2, 6 and 10 hours of light a day and measures their height after two weeks. What is the independent variable?Wikipedia, Dependent and independent variables. Outline: ATI TEAS science section, scientific reasoning.
A student measures the same length five times and averages the readings. What is the main benefit?Wikipedia, Observational error, Random errors versus systematic errors. Outline: ATI TEAS science section, scientific reasoning.
A survey finds that towns that sell more ice cream also report more sunburn. Which conclusion does the survey support?Wikipedia, Correlation does not imply causation, lead section. Outline: ATI TEAS science section, scientific reasoning.
In a test of a fertilizer, half of a set of identical plants get fertilizer and half get none. Why keep the group with none?Wikipedia, Scientific control, lead section. Outline: ATI TEAS science section, scientific reasoning.
Water is heated at a steady rate. It is 20 °C at 0 minutes, 35 °C at 3 minutes and 50 °C at 6 minutes. If the trend continues, what temperature is expected at 9 minutes?Our own question; the answer is worked from the numbers in it. Outline: ATI TEAS science section, scientific reasoning.
What is the SI base unit of mass?National Institute of Standards and Technology, SI Units: base and derived units. Outline: ATI TEAS science section, scientific reasoning.
Which statement is a testable hypothesis?Wikipedia, Hypothesis, lead section. Outline: ATI TEAS science section, scientific reasoning.
Which tool is made for measuring a liquid's volume?Wikipedia, Graduated cylinder, lead section. Outline: ATI TEAS science section, scientific reasoning.
How this list was compiled: Our own questions, written to the science section of the ATI TEAS as Assessment Technologies Institute (ATI) describes it on its TEAS Exam Details page (https://www.atitesting.com/teas/exam-details, read 2026-10-09, headed "TEAS Version 7 is now live"): 50 science questions, 6 of them unscored, in 60 minutes; of the scored questions 18 are on human anatomy and physiology, 9 on biology, 8 on chemistry and 9 on scientific reasoning. The bank holds 21, 10, 9 and 10 in that order. Every fact was read on 2026-10-09 in the public source the question names: the SEER Training Modules of the National Cancer Institute (anatomy and physiology), the MedlinePlus Medical Encyclopedia of the National Library of Medicine, the Genetics Glossary of the National Human Genome Research Institute, DOE Explains of the U.S. Department of Energy, the Water Science School of the U.S. Geological Survey, the SI Units page of the National Institute of Standards and Technology, and Wikipedia. Arithmetic answers are worked out again from the numbers in the question. Licence: Questions, choices and explanations are original work of this site.
How it works
This TEAS science practice test has 50 questions of our own, as many as the real section asks in 60 minutes. It is unofficial and not affiliated with, endorsed by or sponsored by Assessment Technologies Institute (ATI), which owns the TEAS.
Read the full guide
What the science section covers
ATI's TEAS Exam Details page, read October 9, 2026, counts 44 scored science questions: 18 on human anatomy and physiology, 9 on biology, 8 on chemistry and 9 on scientific reasoning. Six more are unscored. This bank holds 21, 10, 9 and 10.
Anatomy and physiology is the largest area, about four in ten of the scored questions. Start there if time is short.
On the real exam a question left blank is scored as incorrect and a wrong guess costs nothing more, so answer every one.
Questions and answers
Is this an ATI TEAS 6 science practice test?
No. ATI's exam details page reads "TEAS Version 7 is now live", and these questions follow that version's four science areas. A TEAS 6 practice test was written for an earlier version.
Are these real ATI TEAS science questions?
No. Every question is our own, written from ATI's published outline and checked against a public source such as the National Cancer Institute's SEER training modules. None is copied or reworded from the exam or from ATI's practice tests.
What score do you need on the TEAS science section?
ATI sets no pass mark. Each school sets its own cut score, so ask the program you are applying to. ATI reports a science score from 0 to 100% beside the total score.
Are ATI TEAS 7 science practice questions all multiple choice?
On the real exam most are, with four options and one right. ATI says about 20% of the exam is other kinds: multiple select, fill in the blank, ordered response and hot spot. Every question on this page has four choices.