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Topics > Microbiology > Bacteriology

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How much bacteria do our hands contain?
Although we can't always see them, microorganisms are present in almost all environments. Many can be grown in the laboratory on plates containing a solid, nutrient-rich medium (agar plates). After several days, a single bacterial cell grows into a population of bacterial cells that is visible to the naked eye. This population of cells is called a microbial colony. In this exercise we will test fo

Difficulty: Elementary school

What is the effect of Chlorox on bacteria
The purpose of this experiment was to compare the bacterial content before and after the use of Clorox wipes on the inside and outside door handles of restrooms. I became interested in doing a project on bacteria because I am interested in a career in medicine, biology or microbiology. In addition my mom has taught me about avoiding bacteria in restrooms and encouraged me to use a paper towel

Difficulty: High school

What is the effect of ultra violet light on bacteria?
My objective was to see what the affect was of ultra-violet light on bacteria. I hoped that the bacteria would get killed, and wanted to see a decrease in bacteria colonies.

Difficulty: Middle school

What types of acne medication are most effective against acne caused by bacteria?
The objective is to determine which acne medications are the most effective in inhibiting the growth of Propionibacterium acnes, over-the-counter or prescription.

Difficulty: Elementary school

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