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

McGaughey (pronounced McGoy) is a researcher at Arizona State University who studies reproduction of mammals. He is a consultant at a hospital, where he is part of a team that implants fertilized eggs into the uterus of women who have not been able to conceive a baby by other methods.

No, urchins are not indigenous to the desert. The usual home for Strongylocentrotus purpuratus is the ocean's rocky floor for grazing along the intertidal and subtidal areas. Also in: Français |…

Our biological sex affects the way we look in some obvious ways, like deciding what body parts we are born with. But, it also has effects on a range of other sexual traits that you might not expect.
Whether coming up with new methods for microscopes, or finding out new things about photosynthesis, Petra Fromme loves the process of discovery.

Television portrays the lives and work of forensic artists, but what is it like to really be a forensic artist? Are the tools you see on the big and little screen really used by these artists? And how does one recreate the face of someone when there might only be a skull or parts of a skull to…

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…

Three inquisitive young co-hosts, Stephanie Galindo, Anthony Delgado and Raenesha Willis visit with biologist and microscopist Page Baluch. Together with Dr. Biology they explore the tiny world of inner space and learn that…

Have you ever wondered where plants get their mass? All those leaves and branches have to come from somewhere, but where?
Teaching Kids About Germs

Let the Germs Begin

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…

Why do we have seasons?

Seasoned to the Tilt

Have you ever thought about your favorite season, and why it looks and feels the way it does? This activity will help you see and understand why Earth has seasons, and the two things that…

Plankton Activity

It’s a Plankton Eat Plankton World

During this activity you will learn how to create your own food web. You will also analyze the feeding relationships between marine organisms and describe the importance of plankton to the…

Learn about the peppered moth

Picking off the Peppered Moth

Play the Peppered Moths Game

Get your beaks ready, it's moth-hunting time. In the Peppered Moths Game, you take on the role of the hunter and…

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…

Cell viewer game

Cell Parts Game

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…

A logo with a brightly colored coral and the letters EcoChains below it.

EcoChains: Coral Futures

EcoChains: Coral Futures

In EcoChains: Coral Futures, your mission is to build and protect a thriving coral reef ecosystem. You’ll build your reef…