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 A meteorite of Martian origin contains possible fossils of bacteria-like life.  Chainlike bacteria Anabaena circinalis | ||||
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RATINGS: Sites are rated from 1 owl (good) to a high of 5 owls. Read more- Microbe Zoo
Overheard at the Microbe Zoo: "Mom! Dad! I wanna go to Dirt Land!" "No, let's go to the Snack Bar — I hear the bacteria-produced chocolate and yogurt are great." The online Microbe Zoo offers several areas of microscopic adventure. See how microbes exist on land, in the water, in food, and even in outer space.
- Bacteria
Just because they're small doesn't mean they're not diverse. Bacteria have been around much longer than people. During their billion years or so on Earth, bacteria have diversified a great deal. Bacteria can differ in several ways ranging from how they move to what they eat, to where they live. The attractive Stalking the Mysterious Microbe site looks deeper into bacteria.
Archaea Archaea are close relatives of bacteria ... or are they?
- Kingdom Monera: The Prokaryotes
Most organisms couldn't survive living in sulfur springs, in subfreezing temperatures, or in oxygenless environments. But bacteria can! It's no wonder that almost all life can be linked back to prokaryotes (cells lacking nuclear membranes) — they are among the most widespread, and the oldest, of all organisms. A college professor explores different kinds of bacteria with more depth.
- Introduction to the Bacteria
Busy bacteria work as digestive aid in animals' guts, snuggle up next to plant roots and supply them with nitrogen, and make foods such as yogurt. This museum from the University of California at Berkeley's Museum of Paleontology examines bacteria through pictures and diagrams. Browse the fossil images to learn about the lengthy history of bacteria, or click on "More on morphology" to see the parts of bacteria (don't worry — there aren't that many!).
- No Signs of Life
Mars attacks! Well, not really. In 1996, a meteorite was found in Antarctica that most likely broke off of Mars. After careful examination, scientists found evidence of what they believe to be the remnants of bacteria. Some have heralded this find as positive proof that life on Mars once existed, but more skeptical scientists have pointed out that nonorganic substances could have produced the curious rock formations. The Whyfiles offers some of the refutations that came out after the announcement of the Martian meteorite find.
- Bacterial Cells
By their very simplicity, bacteria can get away with the internal disorder of having no nuclei. But that doesn't prevent them from carrying out their appointed jobs. At this Eureka Science webpage, Chloe the Chloroplast is happy to introduce the structure and function of a few of her friends: Simon the soil bacterium, Ishy the E. Coli (who lives in guts), BeeGee the blue-green algae, and Suzy the spirillum.
The Average Bacterium
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