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 the cell structure characteristics of protists
Describe the metabolic diversity of protists
Describe the life cycle diversity of protists

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

Describe the role that protists play in the ecosystem
Describe important pathogenic species of protists

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

List the unifying characteristics of eukaryotes
Describe what scientists know about the origins of eukaryotes based on the last common ancestor
Explain the endosymbiotic theory

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

Describe representative protist organisms from each of the six presently recognized supergroups of eukaryotes
Identify the evolutionary relationships of plants, animals, and fungi within the six presently recognized supergroups of eukaryotes
Identify defining features of protists in each of the six supergroups of eukaryotes.

This lesson plan helps students understand the factors that affect water quality and the conditions that allow for different animals and plants to survive. Students will look at the effects of water quality on various water-related activities and describe water as an environmental, economic and social resource. The students will also learn how engineers use water quality information to make decisions about stream modifications.