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Bacteria Growth Lab Report

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For this experiment the goal was to judge bacteria growth in different products that you would find around your house. After finding six products and week of waiting the results were finally ready to be recorded. The products that were test include tap water, vanilla extract, mouth wash, wiper fluid, apple cider vinegar, canola oil, and ammonia. All the products showed some sort of bacteria growth, some more then others. The way that bacteria growth was measured was by observations and measuring the zone of inhibition. The control used in this experiment was tap water. The control is used for a baseline for the other products. The control had some small bacteria colonies, but none were larger then 1mm in diameter. The zone of inhibition was
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Differential media allows for the differentiation between two similar micro-organisms through how the bacteria may handle certain compounds found in the media or the different reactions that may take place when the bacteria is exposed to the medium (3). Selective media on the other hand allow only certain microbes to grow. This is due to the plate containing a limited amount of nutrients, compounds and chemicals that will deter the growth of certain bacteria (3). Dyes, antimicrobial substances, salts, certain growth inhibitors and, antibiotics are also found on this type of medium (3). The differential and selective media mentioned in this lab are as follows:

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Introduction Our world is composed of many bacteria’s’ that can either help or destroy us. Therefore, its’s imperative to learn and study them. The purpose of the lab was to put into action the methods that have been learned in the laboratory to determine our unknown bacteria. Bacteria’s can have different features, shapes, and or arrangements that help microbiologist determined their role in our life (whether they are good or bad for humans).

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