Does+light+effect+cell+growth?

Hailey Trulock, Mady Leach, and Courtney Kotowski Experiment :Growing bacteria in different lightings. -1-no light 2-lamp light 3- sunlight (through window)

Hypothesis:

Purpose: We are growing bacteria in different lighting to see what places in a house or building might be more susceptible to bacteria growth. We plan to grow the bacteria in a petri dish and swob a (toilet seat?). We will have three containers, put one in a window sill to get sunlight, one in complete darkness, and one in UV light. Then record the growth of bacteria every other day for a month. We’re going to do 2-3 trials. Randy Abends experiment concluded that sunlight slows down the growth of bacteria, and that bacteria put in complete darkness will grow faster.(“Does Light Effect Bacterial Growth?” 2012) Kenneth Todars information states that certain bacteria need light to grow and survive. (“Nutrition and Growth of Bacteria” 2012). Ultraviolet light effects the bacteria’s DNA. The damage occurs quickly, the bacteria cannot replicate and repairs itself. Exposure to the light can stop the growth and reproduction in some cases. (Nutrition and Growth of Bacteria). procedure: We are doing this to see what effects the growth of bacteria. We are using a light to see how it changes the growth. We chose to do this because bacteria grows differently with different things. We plan to put it under a light for different amounts of time to see if it makes it grow more or less.

Work Cited: Abend, Randy. "Does Light Effect Bacterial Growth?" Does Light Effect Bacterial Growth? N.p., n.d. Web. 26 Nov. 2012. . Roberts, Susan. "The Effects of Ultra Violet Light on Bacterial Growth." EHow. Demand Media, 22 July 2010. Web. 29 Nov. 2012. . Todar, Kenneth. "Nutrition and Growth of Bacteria." Nutrition and Growth of Bacteria. N.p., n.d. Web. 27 Nov. 2012. < [|__http://textbookofbacteriology.net/nutgro.html__] >.