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:

Identify bacterial diseases that caused historically important plagues and epidemics
Describe the link between biofilms and foodborne diseases
Explain how overuse of antibiotics may be creating “super bugs”
Explain the importance of MRSA with respect to the problems of antibiotic resistance

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

Explain the need for nitrogen fixation and how it is accomplished
Describe the beneficial effects of bacteria that colonize our skin and digestive tracts
Identify prokaryotes used during the processing of food
Describe the use of prokaryotes in bioremediation

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

Describe the evolutionary history of prokaryotes
Discuss the distinguishing features of extremophiles
Explain why it is difficult to culture prokaryotes

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

Identify the macronutrients needed by prokaryotes, and explain their importance
Describe the ways in which prokaryotes get energy and carbon for life processes
Describe the roles of prokaryotes in the carbon and nitrogen cycles

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

Describe the basic structure of a typical prokaryote
Describe important differences in structure between Archaea and Bacteria

Biology is designed for multi-semester biology courses for science majors. It is grounded on an evolutionary basis and includes exciting features that highlight careers in the biological sciences and everyday applications of the concepts at hand. To meet the needs of today’s instructors and students, some content has been strategically condensed while maintaining the overall scope and coverage of traditional texts for this course. Instructors can customize the book, adapting it to the approach that works best in their classroom. Biology also includes an innovative art program that incorporates critical thinking and clicker questions to help students understand—and apply—key concepts.

A brief overview of the prokaryotes. The resource contains some interesting facts that will help you understand the great contrast that exists in the prokaryotic way of life.

Learn about the endosymbiotic theory. This theory explains the evolution of cells from a mitochondria and chloroplast working together in a symbiotic relationship to the current cell structure.

Find out about the difference between prokaryotic and eukaryotic cells, and learn about bacteria and archaea in this video. [6:50]

Khan Academy learning modules include a Community space where users can ask questions and seek help from community members. Educators should consult with their Technology administrators to determine the use of Khan Academy learning modules in their classroom. Please review materials from external sites before sharing with students.

The Tree of Life is a multi-authored, Internet distributed project containing information about phylogeny and biodiversity. The Tree of Life can be used to locate information about a particular group of organisms through their taxonomy.

Berkley offers an introduction to archaebacteria--ancient bacteria--including the history of the topic, scientific findings, and where to find archaeans. Includes images and links.