Ultimate TEAS 7 Science Cheat Sheet 2026

    The Ultimate TEAS 7 Science Cheat Sheet (2026 edition) is a free, high-yield study guide from TEASAcademy containing 437 rapid-fire question–answer pairs for the ATI TEAS 7 Science section. It covers anatomy & physiology (cardiovascular, respiratory, nervous, endocrine, digestive, musculoskeletal, reproductive, immune, urinary, integumentary), cell biology & genetics, general biology, chemistry, and scientific reasoning — color-coded by body system, searchable, and mobile-friendly.

    Showing 45 of 437
    1. Cardiovascular#6

      Which of the following processes causes most of the carbon dioxide from the blood to move into the alveoli?

      A

      Diffusion down a concentration gradient

    2. Cardiovascular#7

      Which of the following metric units should be used to measure the diameter of a red blood cell?

      A

      Micrometer (µm)

    3. Cardiovascular#13

      Which of the following heart valves prevents the backflow of blood into the left atrium during left ventricular systole?

      A

      Bicuspid (mitral)

    4. Cardiovascular#32

      Which of the following structures is associated with deoxygenated blood?

      A

      Right atrium

    5. Cardiovascular#35

      If damage occurs to the alveoli of the lungs, which of the following is true?

      A

      Blood would not be oxygenated

    6. Cardiovascular#41

      A biochemist tests a new blood pressure drug. Which of the following groups will those who receive a placebo be in?

      A

      Control

    7. Cardiovascular#45

      An increase in which of the following would lead to a decrease in the amount of oxygen in the blood?

      A

      Exercise rate

    8. Cardiovascular#48

      The table below shows Blood Alcohol Concentration (%) by number of drinks per hour and body weight (kg). Which of the following conclusions is supported by the data? Drinks/hr 4

      A

      Blood alcohol level is a function of body weight and number of drinks

    9. Cardiovascular#50

      Identify the sequence of events that would occur as a result of skipping a meal. Blood glucose levels fall Pancreas releases glucagon Liver cells break down glycogen Glucose ent

      A

      Blood glucose level falls -> Pancreas releases glucagon -> Liver cells break down glycogen -> Glucose enters the bloo

    10. Cardiovascular#51

      Which of the following describes a direct effect of histamine on blood vessels?

      A

      Causes blood vessels to dilate

    11. Cardiovascular#59

      Which of the following substances in the blood increases when parathyroid hormone is released?

      A

      Calcium

    12. Cardiovascular#75

      How does the carbonic acid bicarbonate blood buffer system respond when an alkaline substance enters the bloodstream?

      A

      H+ ions from carbonic acid neutralize OH- to resist change in blood pH

    13. Cardiovascular#84

      Which of the following units should be used to measure the volume of a blood sample?

      A

      Milliliters

    14. Cardiovascular#92

      Which of the following is the primary function of red blood cells?

      A

      Carrying oxygen to other body cells

    15. Cardiovascular#133

      A person hyperventilates if the blood level of which of the following dissolved gases is abnormally low?

      A

      Carbon dioxide

    16. Cardiovascular#137

      A researcher is comparing the surface areas of the following cells under a microscope: a red blood cell, a neuron, a muscle cell, and a bacterial cell. Which of the following

      A

      Bacterial cell

    17. Cardiovascular#148

      A new drug to regulate heart rate was tested on laboratory rats over a 24-hour period. As the drug concentration increased from 0 to 10 mg/mL, the average heart rate decreased u

      A

      B. Increasing the drug concentration beyond 8 mg/mL has no further effect on heart rate

    18. Cardiovascular#156

      Which of the following correctly identifies the hormone and secretory cells that are responsible for lowering blood glucose levels?

      A

      A. Insulin secreted by β cells

    19. Cardiovascular#162

      Which of the following statements is a testable hypothesis?

      A

      C. Walking 3 miles per day will lower average blood pressure

    20. Cardiovascular#164

      Which of the following microscopes would be used to produce the following image of a blood clot?

      A

      C. Scanning electron microscope

    21. Cardiovascular#182

      A scientist studies the effects of a new respiratory drug on oxygen levels in the blood. Which of the following conclusions is supported by the data in the table?

      A

      The experimental group showed the drug was effective at lowering blood oxygen saturation

    22. Cardiovascular#188

      Which of the following is the primary reason smoking can lead to high blood pressure?

      A

      Nicotine causes arterial vasoconstriction

    23. Cardiovascular#189

      Which of the following describes what happens when blood pH decreases below normal range?

      A

      Bicarbonate ions in the blood stream bind excess H+ ions which increases blood pH back into normal range

    24. Cardiovascular#199

      Which of the following terms refers to the thickest layer of the heart?

      A

      Myocardium

    25. Cardiovascular#203

      Which of the following is the slit in the medial surface of the kidney that admits nerves, blood vessels, lymphatics, and the ureter?

      A

      Hilum

    26. Cardiovascular#230

      Which structure of the female reproductive system is the source of blood and mucosal tissue during menstruation? (Answer: B – Uterus)

      A

      Uterus (B)

    27. Cardiovascular#231

      Which of the following tissues lines the interior surfaces of the heart?

      A

      Endocardium

    28. Cardiovascular#243

      Which of the following hormones regulates blood calcium levels?

      A

      Parathyroid hormone

    29. Cardiovascular#255

      Which of the following pathways best represents the expected flow of blood from the human heart to an organ?

      A

      Blood pumped from the heart first enters arteries that then narrow to form arterioles that deliver blood to capillari

    30. Cardiovascular#257

      Which of the following structures drains oxygen-depleted blood from the kidneys?

      A

      Renal vein

    31. Cardiovascular#270

      Which of the following conditions can directly result from the body's inability to regulate blood glucose levels?

      A

      Diabetes mellitus

    32. Cardiovascular#272

      Which of the following conclusions is supported by the data in the table?

      A

      B) Blood alcohol level is a function of body weight and number of drinks

    33. Cardiovascular#274

      The hepatic portal vein carries nutrient-rich blood to which of the following organs?

      A

      D) Liver

    34. Cardiovascular#285

      A study evaluated the effect of different concentrations of a new drug on patients with high blood pressure. One group was given a low concentration (-5 mm Hg), a second a mediu

      A

      B) The reduction of blood pressure is proportional to the concentration of the drug

    35. Cardiovascular#293

      Which of the following hormones increases blood glucose and fatty acid levels?

      A

      D) Epinephrine

    36. Cardiovascular#321

      Which of the following describes how the carbonic acid bicarbonate blood buffer system responds when an alkaline substance enters the blood stream?

      A

      Hydrogen ions (H+) released from carbonic acid neutralizes hydroxide ions (OH-) to resist change in blood pH

    37. Cardiovascular#330

      Which of the following hormones increases the heart rate in response to stress?

      A

      Epinephrine

    38. Cardiovascular#352

      Which of the following terms describes the relaxation of the chambers of the heart during the cardiac cycle?

      A

      Diastole

    39. Cardiovascular#361

      Which of the following organs produces the hormone that stimulates the production of red blood cells known as erythropoietin?

      A

      Kidney

    40. Cardiovascular#370

      In which of the following locations does the development of blood cells take place?

      A

      Bone marrow

    41. Cardiovascular#373

      The exchange of nutrients between tissues and blood primarily occurs in which of the following locations?

      A

      Capillaries

    42. Cardiovascular#379

      Which of the following areas is the heart located in?

      A

      Thoracic cavity

    43. Cardiovascular#382

      A researcher tested a new drug to lower blood pressure, comparing its effectiveness to that of the currently-in-use drug A. Which of the following hypotheses do the results supp... The new drug has the same mechanism of action as drug A

      A

      The new drug has the same mechanism of action as drug A.

    44. Cardiovascular#401

      An increase in the number of aquaporins along the collecting duct of a nephron results in which of the following?

      A

      Reabsorption of water and an increase in viscosity of the blood

    45. Cardiovascular#406

      A blood clot is composed of which of the following components?

      A

      Platelets and fibrin

    About the TEAS 7 Science Section

    The ATI TEAS 7 Science section contains 50 scored questions in 60 minutes and is widely considered the most challenging part of the exam. Roughly half of those questions test human anatomy & physiology, with the remainder split across biology, chemistry, and scientific reasoning. This cheat sheet condenses the highest-yield facts from each domain into 437 short Q&A pairs so you can review quickly the night before the exam.

    What topics are on the TEAS 7 Science exam?

    Based on the official ATI blueprint, expect questions on the cardiovascular, respiratory, nervous, endocrine, digestive, musculoskeletal, reproductive, immune, urinary, and integumentary systems; cell structure and genetics; macromolecules and metabolism; atomic structure, the periodic table, chemical bonds, acids/bases, and reactions; plus scientific reasoning skills such as identifying variables, interpreting data, and evaluating experimental design.

    How to use this cheat sheet

    1. Filter by a body system using the colored topic chips above.
    2. Use the search bar to jump to any keyword across all 437 questions.
    3. Cover the answer with your finger and quiz yourself card-by-card.
    4. Bookmark weak topics and revisit them with our full practice tests.

    Continue your TEAS 7 prep

    Published June 10, 2026 · Last updated June 13, 2026 · Reviewed by the TEASAcademy editorial team.