Free TEAS Science Questions Practice Test (2026 Update)

This quiz tests your Science skills for the ATI TEAS exam. You will answer questions on human body systems, cell biology, chemistry, and the scientific method. Science carries the most scored questions of any TEAS section.

Study each explanation after every question. Many topics connect across subtopics. Understanding why an answer is correct matters more than memorizing facts.

This quiz covers four core areas: Human Anatomy and Physiology, Biology, Chemistry, and Scientific Reasoning.