Biology+Experiment

Basic Plan--**What are you planning to do?** [] []

ALL GRAPHS ABOVE ARE WITH GLUCOSE

The graphs all shows a double increase in it's rate of CO2ppm thus slope of the line is curved and not straight like that of a constant increase.

|| CO2 yeast produces, CO2 breathed out from humans, and CO2 in the atmosphere around us. || Dependent Variable Name: Yeast and CO2 ppm What instrument will you use to make your measurements? weighting scale, cup/small beaker What units will your measurements be in? g or ml || Independent Variable Name: Sucrose, Glucose, Lactose, and Fructose What instrument will you use to make measurements of this variable? weighting scale, cup/small beaker What units will your measurements be in? g or ml || The temperature of the water bath. It rises up constantly despite the temperature that it is set at. To keep the heat controlled i must set the maximum temperature a little lower. || Sugars- sucrose, lactose, fructose, and glucose Water Beaker CO2 gas sensor Water bath Logger Pro Lap top Heater Dry Yeast Weighting scale || 1. Measure yeast about 2g about 2mL of water 2. Heat up the water bath to about 40-50 degrees Celsius 3. Prepare laptop, logger pro, and CO2 gas sensor (100k ppm) 4. After water bath is heated up quick put in yeast and water in one container and have the CO2 sensor covered once two things are mixed 5. The data should be recorded about every 4seconds || I hypothesized that much of the yeast will begin to bubble and during that time CO2 will be released and i think about 50,000 ppm of CO2 will be released because the air around us is about 400ppm but the air we breathe out is about 40,000ppm CO2 so i think the the yeast shouldn't produce such a high amount of CO2 since yeast is used in various foods and drinks that humans eat. ||
 * "**Grand Idea**"--What is an important/interesting problem that relates to your investigation?
 * **Dependent variable** (this is what you will measure and //depends on// the value of the independent variable
 * **Independent variable**
 * **Variables to Control** (what variables seem significant enough that you will be careful to keep them controlled? For each of these variables, explain briefly how you will be try to control them?)
 * **Materials and Setup** (Include both a list of materials that you will need and a labeled sketch to clarify the setup)
 * **Procedure**
 * **Background Understanding and Expectations** (What are you expecting and why?)
 * **Data Table** (make a data table with appropriate column headings; you can leave values for the dependent variable blank at first, but write down a few values of the independent variable that you plan to use) ||