Bacteria
Date Submitted: 09/09/2006 23:11:34
Category: / Recreation & Sports / Health & Beauty
Length: 2 pages (628 words)
Category: / Recreation & Sports / Health & Beauty
Length: 2 pages (628 words)
* Bacteria
- Bacteria are cells that are big enough to be seen under a light microscope.
- Bacteria are found everywhere: - in the air, in the food, in the water, inside living organisms.
- Some are useful and others are harmful that cause diseases such as pneumonia, tuberculosis, scarlet fever.
- Bacterial cell: has a cell wall, cell membrane, a loop of DNA.
Cell Wall
Cell Membrane
Loop of DNA
*Bacterial growth:
- Bacteria …
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…sterilization
1. Heat - Autoclaving is the process in which we use a pressure cooler at a T° of 120°C for a few minutes to kill all germs.
2. Antiseptic - Chemicals that kills germs on living things. Example: Alcohol or alcohol gel
3. Disinfectant - Chemicals such as Dettol which are used to kill germs on non-living things only because they may be corrosive to the skin.Radiation - Kills Germs
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