TEAS Biology Notes

Updated Feb 1, 2026: Minor typos and clarity issues corrected

In-depth Life & Physical Science (Biology) notes I created while studying for the TEAS exam.

Designed for longer study sessions and focus on the core biology concepts tested on the TEAS.

Organized by topic and breaks down concepts to help you understand how biology questions are presented on the exam!

Summarized version for shorter study sessions sold separately ←

Included in the full in-depth TEAS bundle (best value) ←

Covers topics including:

• Cell structure, function, and organization
• Genetic material
• Inheritance
• Macromolecules
• Microorganisms
• And more!

*NOT an official guide sponsored by ATI*