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 properties of water that are critical to maintaining life
Explain why water is an excellent solvent
Provide examples of water’s cohesive and adhesive properties
Discuss the role of acids, bases, and buffers in homeostasis

This tutorial presents a review of the definitions for pH and buffer solutions

This tutorial describes the effects of adding strong base or strong acid to water.

Met deze simulatie kunnen gebruikers verkennen hoe een interessant
eiwit, rood fluorescerend eiwit, gezuiverd kan worden uit cellysaat met
behulp van hydrofobe kolomchromatografie.

This lab video demonstrates how to perform a PCR (Polymerase Chain Reaction) in the laboratory setting.

This interactive will present the components and steps needed for a successful
PCR reaction.

Polymerase Chain Reaction - or PCR - is known as one of the most ubiquitous and powerful techniques in life science laboratories. PCR is a highly sensitive and selective method to produce many copies of a particular piece of DNA. This pathway details applications of PCR, its mechanism and primer design, and demonstrates how the method is used in the lab.

This simulation allows users to explore how a protein of interest, red
fluorescent protein, can be purified from cell lysate using hydrophobic
column chromatography.