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 process of digestion
Detail the steps involved in digestion and absorption
Define elimination
Explain the role of both the small and large intestines in absorption

Get the facts about feeding birds. Learn about different types of bird feeders and what to put into them. Next, find out what types of birds come to feeders and some of their characteristics. Finally, familiarize yourself with some of the problems that can arise with bird feeders, as well as learn some tips to combat them. A list of resources completes the discussion.

A site on the disorders of the digestive system and on the similarities and differences between the digestion of birds and ruminants.

To reinforce students' understanding of the human digestion process, the functions of several stomach and small intestine fluids are analyzed, and the concept of simulation is introduced through a short, introductory demonstration of how these fluids work. Students learn what simulation means and how it relates to the engineering process, particularly in biomedical engineering. The teacher demo requires vinegar, baking soda, water and aspirin.

The digestive system is amazing: it takes the foods we eat and breaks them into smaller components that our body can use for energy, cell repair and growth. This lesson introduces students to the main parts of the digestive system and how they interact. In addition, students learn about some of the challenges astronauts face when trying to eat in outer space.

A narrated lesson exploring the causes and affects of various disorders of the digestive system. [7:15]

How do animals digest food? Animal nutritionists determine feed rations for livestock, zoo animals, and pets related to their dietary needs but also their digestive systems. This unit will make a connection between soybean used as high protein feed and the types of digestive systems in animals. This unit features 3 lessons and 7 files. Lessons are aligned to NGSS.

The Digestion and Nutrition Student Edition book is one of ten volumes making up the Human Biology curriculum, an interdisciplinary and inquiry-based approach to the study of life science.

A video introducing the two different processes of metabolism: catabolism and anabolism. Video gives lots of example to explain that catabolism is a process of breaking down and anabolism rebuilds matter. [10:06]

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.

In this interactive, students look at actual endoscopic images from a healthy person and from a patient, the patient presented in the unit. They take a tour of the digestive system stopping at different points to look at images.

Information about the digestive system, why digestion is important, how food is digested, and how the process is controlled. Includes a diagram of the body parts involved.

At this site from The Nobel Foundation you can read about Ivan Petrovich Pavlov (1849-1936 CE) who earned the 1904 Nobel Prize in Medicine for his "Work on the physiology of digestion." This website is organized into the following sections: "Presentation Speech," "Biography," "Nobel Lecture," "Educational," and "Other Resources." The "Educational," sections provides a game "Pavlov's Dog," and a link to another article on Pavlov.

Students reinforce their knowledge of the different parts of the digestive system and explore the concept of simulation by developing a pill coating that can withstand the churning actions and acidic environment found in the stomach. Teams test the coating durability by using a clear soda to simulate stomach acid.

Listen to this podcast introducing the function of enzymes in the human body. [0:38]