Liver may not be their first choice for a meal, but it was the perfect option for students conducting an experiment on enzyme reactivity at Massapequa High School’s Ames Campus. Ninth graders in Gwen Bonn’s biology classes studied the effect of temperature and pH on enzyme activity.
Students experimented with different variables, placing pieces of cow liver at different temperatures into three clear liquids. There was an acid (hydrogen peroxide), a base (ammonia) and a neutral pH liquid (water). They observed the reaction inside each test tube, including the bubbles that were created when the liver reacted with the acid.
The experiment was part of the biochemistry unit and the young scientists graphed their results to show which combination of temperature and pH caused the biggest reaction.