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Old 10-23-2005, 04:33 AM
kab kab is offline
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Default good bacteria vs. bad bacteria

My son wants to do a science fair project about probiotics, or good vs. bad bacteria. This is our first projects ever and we don't know how to begin! Can soneone give us ideas?
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Old 10-25-2005, 03:28 PM
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Post How can I help?

Hi,

I would like to know what grade is your son, I have numerous ideas about bacterias. Maybe this can help.

Study the effect of pH on household bacteria?

Introduction: (Initial Observation)
Some bacteria are pathogenic, it means that they cause disease. Some other bacteria that are not pathogenic can grow on food causing bad taste and bad odor. If pH be a factor on growing bacteria, we may be able to change the pH by adding some acids or some bases to the food in order to preserve it from bacteria growth.

In this project you will perform experiments on collecting and growing household bacteria and test the effect of pH on bacteria growth.

Information Gathering:
Gather information about your project. If you are a basic or advanced member of ScienceProject.com, your project advisor may prepare the initial information that you need and enter them in this section. In any case it is necessary for you to read additional books, magazines or ask professionals who might know in order to learn more about the subject of your research. Keep track of where you got your information from.
Bacteria are single-celled micro organisms that play an important role in many ecosystems. Bacteria vary in terms of morphology, oxygen and nutritional requirements and motility. Bacteria may be free-living, live on dead or decaying organic matter (saprophytic), or pathogenic in plants or animals. Bacteria reproduce by fission.
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