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:

Explain why an animal’s diet should be balanced and meet the needs of the body
Define the primary components of food
Describe the essential nutrients required for cellular function that cannot be synthesized by the animal body
Explain how energy is produced through diet and digestion
Describe how excess carbohydrates and energy are stored in the body

A detailed overview of Niacin (vitamin B3). Content includes a look at its background, traditional and new uses, dosage recommendations, and more.

The Mayo Clinic provides great information on vitamin E. Includes background information on the vitamin, a breakdown of proper usage and dosage, and more.

This site from the MayoClinic.com contains an article entitled, "Using vitamin and mineral supplements wisely". Focuses on the right balance of minerals and vitamins, but shows the benefits of whole foods as well.