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...

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...

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

Article reviews Mendel's basic model of inheritance then provides an overview of variations on Mendel's laws, including multiple alleles, incomplete dominance, co-dominance, pleiotropy, lethal alleles, sex linkage, genetic interactions,...

This digital textbook covers core life science concepts and includes interactive features, real-world examples, and videos.

A very good page that uses a Q&A format to describe the process of gel electrophoresis. Interactive in a rudimentary way.

Site allows users to learn interesting information about their genes based on his/her physical traits. Provides a brief explanation of how a person's genotype is determined.

See if you can figure out what different birds eat. This interactive matching game explores the diets of 17 birds commonly found in the US.

Describes the role of mutualism in an ecosystem and the different types, and provides examples.

The concept of competitive exclusion, explained here, states that two species cannot co-exist when needing the same, limited resources to survive. The different types are described and examples are provided.

This is a collection of courses on communities and ecosystems. Some topics explored are productivity, food webs, and ecology. The courses offer video clips, lecture notes, practice problems, and exam questions. Practice problems and exam...

The National Atlas of the United States provides comprehensive information collected by the Federal Government and delivered through interactive maps. Select from a variety of scientific, societal, and historical information to be...

This activity will build upon the concepts taught in the lesson The Strongest Pump of All. The activity will pull together the concepts of bioelectricity, electrical circuits, and biology. It will allow the students the opportunity to...

This interactive timeline reveals key geologic and biological events starting back 4.8 billion years to the present.