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:

Understand macromolecule synthesis
Explain dehydration (or condensation) and hydrolysis reactions

This pathway provides an overview of the four classes of biological molecules (lipids, carbohydrages, proteins and nucleotides) and how they are assembled.

Students learn about various crystals, such as kidney stones, within the human body. They also learn about how crystals grow and ways to inhibit their growth. They also learn how researchers such as chemical engineers design drugs with the intent to inhibit crystal growth for medical treatment purposes and the factors they face when attempting to implement their designs. A day before presenting this lesson to students, conduct the associated activity, Rock Candy Your Body.

These Fizzy's Lunch Lab videos promote the importance of understanding nutritional information and eating a well-balanced diet, focusing on food choices. Students learn about different types of foods from around the world, how to read the facts of a nutrition label and how to navigate to the healthiest items in the grocery store. [4:17]

These Fizzy's Lunch Lab videos and related lesson plan help students understand that water connects all life on earth, that drinking healthy liquids keeps your body hydrated, and not getting enough water results in dehydration. [5:20]

Students learn how crystallization and inhibition occur by examining calcium oxalate crystals with and without inhibitors that are capable of altering crystallization. Kidney stones are composed of calcium oxalate crystals, and engineers and doctors experiment with these crystals to determine how growth is affected when a potential drug is introduced. Students play the role of engineers by trying to determine which inhibitor would be the best for blocking crystallization.

Find out why it is so very important to drink water in order to prevent dehydration. This article also tells you what to do if you do become dehydrated.

Students learn about the techniques engineers have developed for changing ocean water into drinking water, including thermal and membrane desalination. They begin by reviewing the components of the natural water cycle. They see how filters, evaporation and/or condensation can be components of engineering desalination processes. They learn how processes can be viewed as systems, with unique objects, inputs, components and outputs, and sketch their own system diagrams to describe their own desalination plant designs.

These Fizzy's Lunch Lab videos provide an informative overview of the role of sodium in proper nutrition. Students learn how the body only needs a small amount of sodium daily, and too much sodium can cause dehydration, drowsiness and even headaches. Learn how foods with lots of salt and preservatives are also high in sodium. [4:17]

"WaterAid is an international charity. Our mission is to overcome poverty by enabling the world?s poorest people to gain access to safe water, sanitation, and hygiene education". Find articles, video, learning exercises, and more.