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:

Describe epithelial tissues
Discuss the different types of connective tissues in animals
Describe three types of muscle tissues
Describe nervous tissue

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

List the basic components of the blood
Compare red and white blood cells
Describe blood plasma and serum

When sophisticated medical technology became available in the 1970s, it established diagnoses with unprecedented speed and accuracy. But it also affected the practice and teaching of medicine, shifting focus from the bedside to the laboratory and giving rise to a laboratory-oriented rather than a patient-oriented mindset. As a result, physicians’ bedside skills have steadily deteriorated, and using one’s mind and sensory faculties to make diagnoses has become a lost art.