OAT Biology Practice Test

Prepare for your test with realistic questions.

The Association of Schools and Colleges for Optometry created the Optometry Admissions Test (OAT) as a way for candidates to demonstrate their qualifications and potential to succeed in a rigorous optometry education program.

Click “Start Test” above to take a free OAT Biology practice test, and check out our premium-quality OAT test prep resources by clicking the links below!

What’s on the OAT Biology Section?

The Biology section of the OAT exam contains 40 multiple-choice questions that focus on the following topics:

  • Cell and molecular biology
  • Diversity of life
  • Function and structure of systems
  • Evolution and ecology


By Peter Rench

Peter Rench joined Mometrix in 2009 and serves as Vice President of Product Development, responsible for overseeing all new product development and quality improvements. Mr. Rench, a National Merit Scholar, graduated magna cum laude with a Bachelor of Science in Mechanical Engineering and a minor in mathematics from Texas A&M University.


by Mometrix Test Preparation | Last Updated: January 3, 2024