Activity #1: Cellular Respiration

Materials:  balloons, plastic bottles, yeast, sugar, water, water heater 

Part 1: Carefully view the below videos.   Note, the second video includes much more detail than you will need. Be curious, and make note of the major points discussed! Complete the summary in your workbook. 

Part 2: Using the materials provided, carefully recreate the activity shown in the video below. Wear safety glassesDocument your observations in your workbook.  

Part 3: Reflect on the carbon dioxide produced in our balloon lab. What role does yeast play in this reaction? How does yeast carry out cellular respiration, and why is sugar crucial for this process? Connect the behavior of yeast to your own actions during Activity #3 in Unit 1. Clearly explain your reasoning in your workbook.