Gives the dictionary definitions for a lengthy list of biology and microbiology terms.

Make learning about cells fun and easy with a collection of short video clips about cellular biology. Find out about the structure and function of the main organelles inside an animal cell.

This Science Buddies site lays out the requirements needed to become a biological technician, as well as the education and job description. Included are interviews with people who have pursued this career. Try out some aspects of this...

In this third unit of a Biology course, students learn about cells and cell structure. They compare prokaryotic and eukaryotic cells and learn about the specialized structures in a cell and what their functions are. They will also learn...

This digital textbook covers core biology concepts and includes interactive features, real-world examples, videos, and study guides.

Through informational text, interactive activities, practice problems, and video clips, students analyze how biological traits are passed on to successive generations.

Provides descriptions of many different branches in the field of biology.

An explanation of the concept of emergence and what it means in biology. Emergence is a property of a system or structure that is present in the whole but not in its individual components. Presents examples of emergence at different...

Most theories of motivation evolve from biological studies. This article identifies a handful of these theories including intuition theory, instinct theory, drive reduction theory, and psychoanalytic theory.

Explore and review the biological molecules necessary for life.

This comprehensive study guide covers the main terms and concepts needed for a biology unit on the structure and classification of fish.

A collection of video lectures from an introduction to biology course taught at Massachusetts Institute of Technology. The course covers fundamental topics like biochemistry, genetics, molecular biology, and cell biology with thirty-four...

Use the scientific reasoning and critical thinking to take an in-depth look at the basics of biology.

Find out about conservation biology as it relates to endangered and threatened species. Learn about the factors contributing to the loss of species and what efforts have helped bring some animals back form the brink of extinction.

Explains the importance of systems of organization in biology and describes the thirteen levels of organization, from the atom up to the biosphere.

This article explores exactly what is considered alive but reviewing over the characteristics of life.

An article that explores how scientist conduct controlled experiments to test hypotheses.

The Merck Manual describes the human heart and shows how the heart pumps blood. Includes interactive 3D models.

Interactive resource provides a problem set in which you will work with the types of genetic and biochemical information used to unravel the inner workings of the lac operator-repressor regulation system. Correct answers are reinforced...

An explanation of why carbohydrates are important nutrients for the human body. Chemical formulas and structures are used to demonstrate simple and complex carbohydrates.

An article that reviews over the different types of energy: kinetic, potential, and chemical.

Learn about cell theory in this article. [12:29]

Instructional module focusing on Charles Darwin's theory of Descent with Modification. Discusses how slight changes from parent to offspring create variation and potentially create new species over time. Site also includes an interactive...

Discover what evolution is through a case study of a Hawaiian snail species' survival. [7:20]