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Automated Bio-Terrorism Identification Equipment
A discussion of the development of automated bio-terrorism identification equipment to detect and provide warning of the presence of biological agents in the case of biological wafare. -- 1,067 words; MLA

Bio-fuels and France
The paper looks at France and its consumption of bio-fuels. -- 1,250 words; MLA

The Nature of Bio-Tech Industries in Toronto
A look at bio-tech industries in Toronto, studying where they are located, what they look like and their international status. -- 2,000 words; MLA

Media Control in Modern China
An exploration of government control of the media in the People's Republic of China. -- 5,000 words; MLA

Marshall McLuhan and the Media
This paper examines the views and opinions of author Marshall McLuhan regarding the modern media and its impact on humanity. -- 1,553 words; MLA

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BIO MEDIA

How does chlorine added to drinking water kill bacteria and other harmful organisms? Why
doesn't it harm us?
Scientific American (Ask The Experts)
The article explains that although not much is known about how chlorine kills viruses and
bacteria scientists hypothesize that in bacterial cells chlorine attacks the cell wall.
By attacking the cell wall of a gram-negative bacterium (gram- positive bacterium are
more tolerant, but most don't pose a threat) chlorine severely increases the permeability
of the outer membrane, leaving the bacterium vulnerable to destruction. What the experts
know is that chlorine, if properly administrated to water, eliminates most waterborne
pathogens. The reason chlorine is not very harmful to human cells is because when water
reaches the tap it only has a little chlorine in it, enough to kill bacterial cells but
not enough to harm human cells.
Greg Berkovich
1/20/01
Biology(per 8)
Ms. C
Questions:
1. What organisms kill the bacteria after its cell wall is damaged because of chlorine?
How can they survive in chlorinated water?
2. Which is better chlorination or pasteurization?
3. Are there any other methods to destroy pathogens in water?
4. For what diseases is chlorine not effective?
Can bacteria adapt to chlorine like Anti-biotic medicines?

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