I know it's a bit of a rush, but I'll
throw cell info at you anyway.
Enjoy!
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| Life Science | Bacteria Small size in size, invisible to our eyes, but found everywhere.There are more bacteria in your mouth right now than the total of all people who ever lived! Some bacteria can divide very rapidly, with generation times as short as 20 minutes. At this rate, progeny of a single cell growing for 24 hours could cover the earth with a layer of bacteria 4 feet deep! (Wouldn't happen though, there's not enough food) Bacteria have rigid cell walls (like plants and fungi, different from animals). Penicillin destroys bacterial cell walls without affecting human tissues, unlike many other antibiotics that have side effects. Some bacteria are motile, many are not. Some move by flagella, others by gliding. Almost all bacteria become dormant when starved, but start to grow again very quickly once nutrients are available.Bacteria can survive dehydration (like freeze-dried coffee), and return to life when water is available. Some bacteria have a specialized dormancy structure, the endospore. Endospores can survive boiling for up to several hours, and can be revived after decades of dormancy. Bacteria (and fungi) are decomposers; they break down organic remains of plant and animal tissue.The smell of "rotting" is due to bacterial activity. Bacteria can eat almost any natural product: mothballs, oil, wood, turpentine, etc. They are responsible for all recycling (along with fungi). Bacteria rapidly consume oxygen. Many bacteria are anaerobes; they only live without oxygen. Bacteria clean up oil spills and convert garbage to compost.They widely used in food industries -- bacteria ferment milk => yogurt, cheese, sour cream, buttermilk; ferment cabbage => saurkraut. Normal flora, or microbiota, help us break down food, reducing the risk of infection. | ||||||||||
| This is the first part of the website. I know it's a bit of a rush, but I'll throw cell info at you anyway. Enjoy! |
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| Cell Vocab | |||||||||||
| Cell Biology | |||||||||||
| More cell stuff |
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