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. Biology 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. The 2nd edition has been revised to incorporate clearer, more current, and more dynamic explanations, while maintaining the same organization as the first edition. Art and illustrations have been substantially improved, and the textbook features additional assessments and related resources.

By the end of this section, you will be able to do the following:

Discuss the role of carbohydrates in cells and in the extracellular materials of animals and plants
Explain carbohydrate classifications
List common monosaccharides, disaccharides, and polysaccharides

This pathway provides an overview of the four classes of biological molecules (lipids, carbohydrages, proteins and nucleotides) and how they are assembled.

Here you can learn all about carbohydrates! Content explores what carbohydrates are used for in the body, as well as the different types: saccharides, regular sugars, and polysaccharides.

In this video, learn how Leo Koch (age 9, Maine) chooses healthy foods, like those in his Healthy Lunchtime Challenge winning recipe for Vegan Superhero Soup, to fuel his competitive running and help manage his diabetes. Leo leads an active life. As a type 1 diabetic, his nutritional needs demand added scrutiny. Because the body processes nutrients in different ways, Leo analyzes foods for their protein, fat, and carbohydrate contents. [2:45] Check out the Support Materials below for Teaching Tips and a link to a customizable student handout.

This pathway provides an overview of biological macromolecules and their properties. The resources in this pathway can be used to introduce or review the structure and function of lipids, carbohydrates, proteins, and nucleic acids. For a deeper look at this topic, we recommend the pathway Biological Macromolecules from the OpenStax textbook Biology for AP® Courses.