ATI TEAS 7 Science
2026/2027 Practice Exam
25 Original Questions, Highlighted Answers & Detailed Rationales
Coverage: human anatomy and physiology, biology, chemistry, and scientific reasoning.
How to use this paper
Answer each question before revealing the highlighted answer and rationale. Use missed questions to identify
concepts for further study with current course and official preparation resources.
Originality and scope notice
Every question and rationale was newly written for educational practice. This is not an actual, recalled, leaked, or official examination
and does not guarantee a score. ATI and TEAS are trademarks of their respective owner. This independent resource is not affiliated
with or endorsed by ATI.
Original educational practice material - not an official or recalled examination Page 1
, 1. Which structure is the primary site of gas exchange in the lungs?
A. Bronchi
B. Alveoli
C. Trachea
D. Pleura
Answer: B
Rationale: Alveoli provide a thin, highly vascular surface where oxygen and carbon dioxide diffuse between air and
blood.
Original educational practice material - not an official or recalled examination Page 2
, 2. Which chamber pumps oxygenated blood into systemic circulation?
A. Right atrium
B. Right ventricle
C. Left atrium
D. Left ventricle
Answer: D
Rationale: The left ventricle ejects oxygenated blood through the aorta to the systemic circulation.
Original educational practice material - not an official or recalled examination Page 3
2026/2027 Practice Exam
25 Original Questions, Highlighted Answers & Detailed Rationales
Coverage: human anatomy and physiology, biology, chemistry, and scientific reasoning.
How to use this paper
Answer each question before revealing the highlighted answer and rationale. Use missed questions to identify
concepts for further study with current course and official preparation resources.
Originality and scope notice
Every question and rationale was newly written for educational practice. This is not an actual, recalled, leaked, or official examination
and does not guarantee a score. ATI and TEAS are trademarks of their respective owner. This independent resource is not affiliated
with or endorsed by ATI.
Original educational practice material - not an official or recalled examination Page 1
, 1. Which structure is the primary site of gas exchange in the lungs?
A. Bronchi
B. Alveoli
C. Trachea
D. Pleura
Answer: B
Rationale: Alveoli provide a thin, highly vascular surface where oxygen and carbon dioxide diffuse between air and
blood.
Original educational practice material - not an official or recalled examination Page 2
, 2. Which chamber pumps oxygenated blood into systemic circulation?
A. Right atrium
B. Right ventricle
C. Left atrium
D. Left ventricle
Answer: D
Rationale: The left ventricle ejects oxygenated blood through the aorta to the systemic circulation.
Original educational practice material - not an official or recalled examination Page 3
