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Free TEAS Science Practice Test Online

Official exam: TEAS Science Practice Test (ATI TEAS 7)

Take a free TEAS Science practice test online: a full 44-question paper with every answer explained, no sign-up, scored by topic. The full 150-question bank and the timed simulator are $14.99 for 30 days.

First published: September 12, 2026Bank updated: September 12, 2026Published by CertQuestUSA · review process
TL;DR

TEAS Science Practice Test (ATI TEAS 7): a 150-question practice bank for the real Healthcare & Pharmacy Certification standard, 3 full papers of 44 questions each with no repeats, every question written to the exam sponsor's published content outline.

Where these questions come from

Every question in this bank cites a source -- primarily ATI TEAS 7 Science: Human anatomy & physiology (41%) and ATI TEAS 7 Science: Scientific reasoning (21%) of this exam's citations.

Take a full practice test free. 44 real questions built to the exam's domain weights, every answer explained, no sign-up required, with a domain-by-domain score at the end.
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3
full papers, no repeats
44
questions per paper
150
questions in the bank
What this exam covers
5 real sample questions
Which is the main function of the large intestine?
A. Absorbing water and forming feces
B. Producing digestive enzymes
C. Absorbing most digested nutrients
D. Secreting bile
Show answer and reasoning

Correct answer: A. Absorbing water and forming feces

Correct. The large intestine reclaims water and electrolytes from the remaining material and compacts the waste.

  • B: The large intestine secretes mucus but no digestive enzymes.
  • C: Most nutrient absorption occurs in the small intestine.
  • D: Bile is made by the liver and stored in the gallbladder.
Source: ATI TEAS 7 Science: Human anatomy & physiology
Which vitamin does the skin help produce when exposed to sunlight?
A. Vitamin A
B. Vitamin K
C. Vitamin D
D. Vitamin C
Show answer and reasoning

Correct answer: C. Vitamin D

Correct. Ultraviolet light converts a cholesterol-derived compound in the skin into a form of vitamin D, which is then activated by the liver and kidneys.

  • A: Vitamin A comes from the diet and is stored in the liver.
  • B: Vitamin K comes from diet and gut bacteria.
  • D: Vitamin C comes from the diet; humans cannot make it.
Source: ATI TEAS 7 Science: Human anatomy & physiology
What do sebaceous glands secrete?
A. Oily sebum that lubricates skin and hair
B. Watery sweat
C. Melanin
D. Keratin
Show answer and reasoning

Correct answer: A. Oily sebum that lubricates skin and hair

Correct. Sebaceous glands, usually attached to hair follicles, release sebum that keeps skin and hair from drying out.

  • B: Watery sweat comes from sweat glands.
  • C: Melanin is a pigment made by melanocytes.
  • D: Keratin is a protein made by epidermal cells, not a gland secretion.
Source: ATI TEAS 7 Science: Human anatomy & physiology
Which gland produces the hormones that set the body's overall metabolic rate and requires iodine to make them?
A. Adrenal gland
B. Parathyroid gland
C. Pineal gland
D. Thyroid gland
Show answer and reasoning

Correct answer: D. Thyroid gland

Correct. The thyroid makes thyroxine (T4) and triiodothyronine (T3), both of which contain iodine and regulate metabolism.

  • A: The adrenal glands produce cortisol, aldosterone, and epinephrine.
  • B: The parathyroid glands regulate blood calcium.
  • C: The pineal gland secretes melatonin, which influences sleep cycles.
Source: ATI TEAS 7 Science: Human anatomy & physiology
Which hormone is released by the posterior pituitary?
A. Adrenocorticotropic hormone
B. Thyroid-stimulating hormone
C. Antidiuretic hormone
D. Growth hormone
Show answer and reasoning

Correct answer: C. Antidiuretic hormone

Correct. Antidiuretic hormone and oxytocin are made in the hypothalamus and released from the posterior pituitary.

  • A: Adrenocorticotropic hormone is an anterior pituitary hormone.
  • B: Thyroid-stimulating hormone is an anterior pituitary hormone.
  • D: Growth hormone is secreted by the anterior pituitary.
Source: ATI TEAS 7 Science: Human anatomy & physiology

Frequently asked questions

Where can I take a free TEAS Science practice test online?
Right here. CertQuestUSA's free TEAS Science practice test online is a full 44-question practice paper built to the real exam's domain weights, with every answer explained, with no sign-up and no credit card, and shows your score by topic at the end. The full 150-question bank, with every answer explained and cited to the exam sponsor's published content outline, is $14.99 for a 30-day pass that never renews.
How many questions are on the CertQuestUSA TEAS Science Practice Test (ATI TEAS 7) practice test?
150 questions total, split into 3 full papers of 44 each with no repeats across papers.
What topics does the TEAS Science Practice Test (ATI TEAS 7) test cover?
4 domains, with the heaviest weight on Human Anatomy Physiology (41%), Biology (21%), and Scientific Reasoning (21%).
Where do CertQuestUSA's TEAS Science Practice Test (ATI TEAS 7) questions come from?
Primarily ATI TEAS 7 Science: Human anatomy & physiology (41%) and ATI TEAS 7 Science: Scientific reasoning (21%) of this bank's citations -- computed directly from this exam's own question sources, not a generic description.
Is there a free TEAS Science Practice Test (ATI TEAS 7) practice test?
Yes -- one full 44-question practice paper built to the exam's domain weights, free with no sign-up, with every answer explained and a domain-by-domain score at the end.
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