Biology OER

The links below are intended to provide a jump start with a few specific resources. They are not exhaustive. Use Google Advanced Search (set “usage rights” at the bottom to “free to use share or modify” ), OASIS, MERLOT, OER Commons, OpenEdCuny, and other OER search tools to find updated and additional resources and connect with others. CC Search or the CC Search Browser extension makes it easy to locate, download and cite images. Stay connected by joining disciplinary OER and general OER communities.

Textbooks and Lecture Slides

  • Anatomy and Physiology Textbook (OpenStax)*
    A dynamic textbook for the two-semester human anatomy and physiology course for life science and allied health majors. The book is organized by body system and covers standard scope and sequence requirements. The web-based version of Anatomy and Physiology also features links to surgical videos, histology, and interactive diagrams.
  • Human Anatomy and Physiology Preparatory Course Textbook PDF (Carlos Liachovitzky, CUNY Bronx Community College)
    The overall purpose of this preparatory course textbook is to help students familiarize with some terms and some basic concepts they will find later in the Human Anatomy and Physiology I course. The organization and functioning of the human organism generally is discussed in terms of different levels of increasing complexity, from the smallest building blocks to the entire body. This Anatomy and Physiology preparatory course covers the foundations on the chemical level, and a basic introduction to cellular level, organ level, and organ system levels. There is also an introduction to homeostasis at the beginning.
  • Concepts of Biology Textbook*
    Open textbook “designed for the typical introductory biology course for nonmajors, covering standard scope and sequence requirements. The text includes interesting applications and conveys the major themes of biology, with content that is meaningful and easy to understand. The book is designed to demonstrate biology concepts and to promote scientific literacy.”
  • Biology2e Textbook (OpenStax)*
    “Biology 2e
    is designed to cover the scope and sequence requirements of a typical two-semester biology course for science majors. The text provides comprehensive coverage of foundational research and core biology concepts through an evolutionary lens. It includes rich features that engage students in scientific inquiry, highlight careers in the biological sciences, and offer everyday applications. The book also includes various types of practice and homework questions that help students understand—and apply—key concepts.” This updates the earlier edition.
  • Microbiology Textbook (OpenStax)*
    “Microbiology covers the scope and sequence requirements for a single-semester microbiology course for non-majors. The book presents the core concepts of microbiology with a focus on applications for careers in allied health.”
  • Biology for AP Courses Textbook (OpenStax)
  • Environmental Biology Textbook (OpenOregon)
    “This open textbook covers the most salient environmental issues, from a biological perspective. The text is designed for an introductory-level college science course. Topics include the fundamentals of ecology, biodiversity, pollution, climate change, food production, and human population growth.” Lecture slides for each chapter.
  • Biofundamentals – University of Colorado
    A one- (evolving into two) semester introductory course on the evolutionary, molecular, genetic, genomic & systems foundations of modern biology
  • Cell and Molecular Biology Focuses on experimental support for what we know about cell and molecular biology. Written to serve as the introductory biology course for biology majors with high school chemistry and biology prerequisites as well as for “gateway” cell and molecular biology courses for students with a college-level general biology and general chemistry course background.
  • CK-12 College Human Biology covers cell biology, genetics, evolution, physiology, disease, nutrition, and ecology. By CK-12, Jean Brainard, Ph.D., and Rachel Henderson, Ph.D.

*Lectures slides for OpenStax books can be obtained by signing up as an instructor at Openstax. Some of these lecture slides are also available at OERCommons.

All 33 OpenStax books are also available as PressBooks versions at BCcampus. There are also adapted OpenStax, Boundless (archived by Lumen Learning) and other biology books and anciliaries at LibreTexts.

Homework and Exercises

The links below provide results for biology homework and assignments from the listed OER repositories and platforms. This section is under development.

Lab Experiments and Manuals

Virtual Labs

Interactives, Simulations and Games

Tests, Quizzes and Assessments

This is under construction.

Multi-media and Images

Free to Access Courses, Journals and OER Hubs

Other Resources

The National Academies of Sciences, Engineering, Medicine Online and PDFs of different subjects that can be downloaded for free by the chapter or the entire book.


The sources listed on this page are copied or adapted from: