Welcome to Ask A Biologist. This site has a large collection of biology learning materials that includes stories, games, activities, videos, and a podcast.

Recently, scientists have tried to break into the secret world of microglia (the brain’s immune cells). They are trying to figure out how these cells can shape-shift into weird and wonderful formations.

Explore the Cell Viewer Game

Cells are the basic building blocks of life, but what all do cells hold? You can now look inside of cells to learn more about their parts in our Cell Viewer.

To learn more about cells and cell parts, visit Building Blocks of Life for more of the story.

Colors are not just for humans. In fact, Mother Nature has been playing with color and love for very long time. What are these colors of love? Are they all the brightest and boldest colors, or is there more to the story?

Germs are tiny organisms that can make you feel sick and cause disease. During this activity you will illustrate the steps germs take during transmission. You will learn about the different types of bacteria, how they are spread, and discuss ways to keep from getting sick.