Bacteria

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* 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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showed last 75 words of 628 total
…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