Here are experiments our science specialists have selected to support the IB* topic.
Experiment #20 from Investigating Biology through Inquiry
In this Preliminary Activity, you will (1) produce a button mushroom extract, (2) react this cellobiase-containing extract with substrate, (3) collect samples after 1, 2, 3, 4, and 6 minutes of reaction, (4) use a spectrophotometer to measure the absorbances of the colored samples, (5) plot a graph of absorbance vs. time, and (6) use the graph to determine the rate of the cellobiase catalyzed reaction.
After completing the Preliminary Activity, you will first use reference sources to find out more about mushrooms, cellobiase activity, and the evolution and ecology of mushrooms before you choose and investigate a researchable question dealing with cellobiase and the evolution of mushrooms. Some topics to consider in your reference search are: