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Biology 2e (2nd edition) is designed to cover the scope and sequence requirements of a typical two-semester biology course for science majors. The text provides comprehensive coverage …

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This free textbook is an OpenStax resource written to increase student access to high-quality, peer-reviewed learning materials.

This free textbook is an OpenStax resource written to increase student access to high-quality, peer-reviewed learning materials.

This free textbook is an OpenStax resource written to increase student access to high-quality, peer-reviewed learning materials.

This free textbook is an OpenStax resource written to increase student access to high-quality, peer-reviewed learning materials.

Study microbiology online free by downloading OpenStax's Microbiology book and using our accompanying online resources including a biology study guide.

This free textbook is an OpenStax resource written to increase student access to high-quality, peer-reviewed learning materials.