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 major viral illnesses that affect humans
Compare vaccinations and anti-viral drugs as medical approaches to viruses

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

Define population genetics and describe how scientists use population genetics in studying population evolution
Define the Hardy-Weinberg principle and discuss its importance

Find simple answers to several common questions about the flu including: "How does the flu spread?" "What are the symptoms of the flu?" "How long is a person contagious?" "What is the difference between a cold and the flu?" "At what age should a child be vaccinated?" "What can I do to protect myself against the flu?"

This lesson describes the major components and functions of the immune system and the role of engineers in keeping the body healthy (e.g., vaccinations and antibiotics, among other things). This lesson also discusses how an astronaut's immune system is suppressed during spaceflight due to stress and other environmental factors.

In this simulation the learner will design a sequence of experiments to
generate a coronavirus vaccine.

An interactive, self-guided lesson on the function of the human immune system and how medical intervention prevents disease. This lesson has many descriptive animations as well as graphs and diagrams to help with understanding. There is a self-checking quiz at the end of the lesson.

This resource provides information about influenza, the flu shot, and who should get one.

This article on children and whooping cough is organized into the following sections: "Pertussis (Whooping Cough)," "Prevention, When to Call Your Child's Doctor, and Professional Treatment," and "Home Treatment." Learn what makes the whooping cough different than the common cold or flu, and learn how to take care of children sick with this bacterial infection.

This site from MayoClinic.com provides great information as to the prevention of the viral disease Hepatitis A. It discusses protecting yourself as well as protecting others.

This site presents a detailed article which outlines the causes, risk factors, treatment, and prevention of measles.

This site provides the latest news and information regarding measles. Content includes general information, specialized fact sheets, specific conditions caused by the disease, pictures, and more.

This collection uses primary sources to explore the polio epidemic and vaccine. Digital Public Library of America Primary Source Sets are designed to help students develop their critical thinking skills and draw diverse material from libraries, archives, and museums across the United States. Each set includes an overview, ten to fifteen primary sources, links to related resources, and a teaching guide. These sets were created and reviewed by the teachers on the DPLA's Education Advisory Committee.

This pathway introduces the concept of vaccination, how vaccines are developed, and the purpose of clinical trials during vaccine development. The coronavirus SARS-CoV-2—which causes COVID-19—serves as an example.