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

Did you ever wonder what causes river rocks to be slippery? Can you believe it's the same thing that causes plaque on your teeth? Learn about this "biofilm," and how Valerie Stout is fighting it (in some cases) to improve medicine.

Everything that is alive is made of cells, but there are really only two main types of cells. Learn how these cell types became different and why they are so important to life.Also in: Español | …

Little water, sweaty, hot summer days and frigid winter nights make the desert an uninviting place for most animals and plants. But hiding just below the surface, the desert is alive with microbes—tiny, living things too small to see without magnification.Also in:…

Transforming robots are favorites of television and movies, but nature has some of the best transformers. Animals that can change in ways that almost seem unbelievable. Also in: Español

Coral reefs may look like colorful rocks, but they’re living animals that support entire ocean ecosystems. In this episode, Dr. Biology chats with professor Liza Roger, whose lab at Arizona at Arizona State University is home to corals, sea anemones, and some unusual upside-down jellyfish. Together…
An interview with biologist Doug Lake from the Arizona State University School of Life Sciences. Dr. Biology and his co-host Ramon Santos find out how something as simple as a paper cut can put our body defense to work.

If you had x-ray vision, where would you look first? Some of our biologists have looked inside of beetles to learn more about how they breathe and fly.

These fluttering icons of North America are a favorite of many people across the world, but they may be having some population problems. Don’t worry though, there are ways you can help. Conservation specialist Gail Morris talks with our student guest host Kayna Lantz…

An illustration of different cell sizes and a ruler, to measure nuclear cytoplasmic ratios

Cell Size SIM

Play the Cell Size SIM

Certain cell types should have a general size and have proportionate parts. But what if those sizes and proportions are…

Monster game

Monster Maker

Play Monster Maker

Build your own monster by decoding the monster genome in Monster Maker, a DNA game. It is not very different from what…

Dr biology looking at some ants

Collecting Ants

Read Collecting Ants and then take this quiz to test your knowledge!

An illustration of pea pods with different genes (yellow and green, and round and wrinkled)

Genetics Game

Play Garden Gene Genius

Our genes control much of how we look and who we are. But do you really know how genetics work? Take a moment to gather some…

Blue the water drop character looking happy and holding an Arizona map.

Myth or Fact - Arizona Water Game

Play Arizona Water Myth or Fact Game

Every state has its own strategies and approaches to make sure people, cities, and the environment gets…

Landscape with a road separating lush grass and bushes on one side and a desert landscapes with sand and rocks on the other.

Climate Central

Visit Climate Central

As our climate changes, it will affect all organisms on Earth including humans. Climate Central is a collection of six…

Thick blue pipes.

Virtual Water Treatment Plant

Virtual Water Treatment Plant

Have you ever wondered where the water in your home, school, or businesses come from? In this virtual tour, explore…