Bacteria to the Future
Overview
Objectives/Goals To find out if a dog, cat, or human has the most bacteria in its saliva. Methods/Materials Foil; wooden box; insulation, board; thermometer; 40 watt light bulb; lamp; electrical tape; 4 blood ager dishes; 6 cotton swabs; human, cat, and dog saliva; microsope; pad; paints; colored pencils. Scraped saliva from cat, dog, human mouth and observed for 36 hours. Results A cat has the most bacteria, then human. A dog has the least bacteria. Conclusions/Discussion I found out that when a cat gets exposed to certain bacteria, it carries the disease for 2 to 5 years before it shows the disease and that a dog has an antibiotic enzyme in its saliva.
Summary statement
My project's goal is to determine whether a dog, cat, or human has the most bacteria in its saliva.
Help received
Father helped get vicious cat's saliva, microscope borrowed from school
Competition history
- CSEF 2003
Resources
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Source: California Science & Engineering Fair public projects