T Y Grant Bennett with Dr. Tim Knight Grant Bennett is a senior biology and chemistry major from Hot Springs, Arkansas. He plans to attend medical school after graduating from Ouachita Baptist University. Roundup is one of the most commonly utilized herbicides in the United States. This study will determine the LC50 of Roundup in the Microtox test while chronic test endpoints will be sought in the earthworm tests. The Microtox test involves measuring changes in light output by bacteria before and after exposure to the toxic agent.
Toxicity is measured by a decrease in light output.