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

A pregnant person's blood type is usually compatible with the fetus’s blood type. But what happens when that’s not the case?
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?

You might think that most places on Earth experience the changing of seasons because of the distance from the Sun. But, surprise, that's not the cause. Come and learn some new information to lean on about the tilt of the Earth. 

Where might we find life, and what should we even be looking for to see if life exists on other planets?. Sara Walker is going where others have not gone before in the search for life.
How do animals keep warm when the temperatures drop? It is not like they can turn on heater or bundle up in a layers of warm clothes like humans do. Before you watch this video, try to think of ways animals might keep warm.

Why do peanuts, pollen, or pet dander make some of us sneeze or swell up—but not others? In this episode, Dr. Biology talks with immunologist Esther Borges Florsheim from Arizona State University to explore how allergies start, why they’re becoming more common, and what’s really…

Giant beetles, flying treadmills, oxygen and prehistoric insects are just a few of the things that Dr. Biology learns about when visiting with biologist Jon Harrison.

Imagine a day at work where your clients range from tiny reptiles to massive elephants, each with their own unique health needs. That's a regular day for our guest in today's episode, Dr. Gary West, the Senior Vice President of Animal Health and Living Collections at the Arizona…

sketch activity

Catch and Sketch Plankton

Learn to focus on detail and make keen observations that could be overlooked in a picture in this lesson on scientific sketching.

a girl about to eat some grapes

How do we sense taste?

Read How Do We Sense Taste? and then take this quiz to test your knowledge!

a cartoon of the taiga biome

Taiga

Read Trailing Through Taiga 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…

Four potential viruses that can be used in the game

Give It A Shot

Explore Give It A Shot

As our lives become more affected by viruses and bacteria that cause disease, how much does wearing masks and…

Solving mysteries illustration

Using the Scientific Method: The Case of the Mystery Images

Play The Case of the Mystery Images

Looking for another detective assignment? Practice all the new detective skills you learned in the…

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…

Cartoon of two scientists one male and one female.

Doctor Know

Play Doctor Know

Play doctor in the 21st century! Practice modern medicine by examining all dimensions of the body, from organs to molecules, as…