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

Humans can suffer from certain back problems in their old age, but other very similar animals don’t have the same issues. Why might this be the case?

When you visit a pond or the beach, what kinds of living things do you see in the water? Depending on the environment, you might find fish, frogs, crabs, insects, seaweed, or lily pads. Don’t let your eyes fool you, though… there’s a hidden world in water full of creatures too small to be…

GMO might sound like a hard-to-understand name. But taking a quick look into the world of genetic modification will hopefully make it all a bit easier to understand.

A tiny creature that flies and swims at the same time caught the attention of Arizona State University Professor Richard Satterlie a few years ago.

They might be colorful. They might be cute to some people. But don’t let that fool you. These bright-colored frogs are poisonous. Dr. Biology talks with biologist Molly Cummings to learn about her work with some frogs that advertise to predators to stay away and other frogs that…

Have you looked at DNA? Really, you can see DNA if you follow along with biologist Melissa Wilson. This kitchen and classroom experiment is perfect for budding biologists.
An interview with biologist Dave Pearson research professor in the School of Life Sciences at Arizona State University and Audubon environmental educator Cathy Wise. Dr. Biology learns from his two guests that bird watching is pretty cool and fun.

When you visit a pond or the beach, what kinds of living things do you see in the water? Don’t let your eyes fool you… there’s a hidden world in water full of creatures too small to be seen!

nervous system in the body

A Nervous Experiment

Do you think you need the same number of nerves in every part of your body? Where in your body might you need more nerves? See for yourself! Also in:…

Virus comic book

Viral Attack

Viral Attack is the story of the human immune system and how it protects the body from attacks from harmful bacteria and viruses.

a hand placing pin points on a map

Mapping the Future

Read Mapping the Future and then take this quiz to test your knowledge!

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…

COVID-19 game simulation

COVID SIM Pandemic Simulation

Explore COVID SIM

In the COVID-19 pandemic, how much does wearing masks and distancing matter? How important is it to get vaccinated? You can…

hand bones

Busy Bones

Explore the Bone Anatomy Viewer

Ever wonder what’s inside your bones? Here’s your chance to find out! Dissect a virtual bone and learn…

A snake in an underground burrow.

Desert Survivor

Play Desert Survivor

In this story-based game, you are a young rattlesnake learning to survive in a harsh desert environment. You'll search…