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single-celled organisms

What Is a Microbe?
Image: iStockphoto.com/Eraxion

What Is a Microbe?

Just because an organism consists of only one cell, doesn't mean it's not important.

Microbes produce much of the oxygen we breathe and help digest our food. There are millions of them on your hand right now. Take a look at these single-celled organisms and the people who study them.

American Society for Microbiology
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CellCraft

CellCraft

Try your hand at building a single-celled organism by acquiring the necessary ingredients -- organelles, energy, and others -- in this game. More...

Game
Carolina Biological Supply
Germ Invasion

Germ Invasion

Microorganisms are everywhere—and their diversity is astonishing. Collect samples from around your haunts to determine what’s living with, or on, you. More...

Activity
Science Buddies
Winners Gallery: International Digital Imaging Competition

Winners Gallery: International Digital Imaging Competition

Scroll through more than a decade of "the world’s most amazing images of life’s wonders as seen through microscopes" in this gallery of award-winning photos. More...

Images
Olympus BioScapes
All Species Evolved from Single Cell, Study Finds

All Species Evolved from Single Cell, Study Finds

A recent study using computer models says all life evolved from a single-celled organism that lived some 3.5 billion years ago — supporting Darwin’s idea of a "universal common ancestor." More...

Article
National Geographic
In Pictures: Single-Celled Organisms

In Pictures: Single-Celled Organisms

Take a look at these stunning images of the microscopic world. These single-celled organisms prove small is beautiful. More...

Images
The Christian Science Monitor
Archaea: Fossil Record

Archaea: Fossil Record

Archaea were on the scene 3.8 billion years ago — when conditions were still pretty inhospitable to life on Earth. How do we know that? From the fossil record. Yep, even microbes leave their mark. More...

Article
University of California, Berkeley
Bold New World of Biotic Games

Bold New World of Biotic Games

Madden ’13 has nothing on these video games. Players induce real paramecia to move such that they "kick" a ball on the screen into a goal or gobble up yellow balls in a game like Pac-Man. More...

Video
Standford University
Bubble Algae

Bubble Algae

Bubble algae are one of the largest single-celled organisms on Earth — up to 2 inches across! Take a closer look at Ventricaria ventricosa. More...

Images
Smithsonian
Gut Instinct

Gut Instinct

The single-celled organisms that live in our gut are important for more than just digestion. Research shows they can affect our behavior and brain development. More...

Article
Science News for Students
Let’s Make a Microbe!

Let’s Make a Microbe!

What does a cell need? Build your own microbe to see what it takes to be alive. Researchers are using these principles to try to make synthetic life in the lab. More...

Interactive
NOVA/PBS
The Power of Microbes

The Power of Microbes

Gut microbes may help define a species. If its parents' microbes aren't compatible, a hybrid may not survive. Get details about this jewel wasp study. More...

Article
Science News for Students

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