Teacher manual for Advanced Environmental and Earth Sciences labs. Has both the printed version and a flash drive with teacher tips, a PDF of teacher version and editable Word student version.
Use a dissolved oxygen sensor, a carbon dioxide sensor, and the EcoChamber™ to analyze aerobic and anaerobic respiration by yeast cells.
Students use yeast cells as a simple model for studying both aerobic and anaerobic cellular respiration. As part of this investigation, they:
- Analyze evidence of aerobic and anaerobic respiration by yeast cells.
- Discuss the role of cellular respiration in the carbon and oxygen cycles.
- Explain the role yeast cells play in scientific exploration.
Students gain experience conducting the following procedures:
- Creating a closed-system for collecting and interpreting data collected by CO2 gas and dissolved oxygen sensors.
- Using a microscope to observe and describe yeast cells.
Sensors / Equipment Used:
MultiMeasure sensor that incorporates pH, conductivity, temperature, and the optical dissolved oxygen probe.
The PASPORT Carbon Dioxide Gas Sensor measures carbon dioxide concentration CO2 (parts per million) in gases such as air. Ideal for studies of photosynthesis, respiration, fermentation and more.
A single acrylic chamber designed to integrate sensors for controlled-environment experiments such as fermentation and plant or cricket respiration.
Activated baker's yeast, 7-g packet
Beaker, 1 L
Graduated cylinder, 500-mL or 1-L
Hot plate with magnetic stirrer and stir bar
Magnetic stir plate with stir bar
Microscope slide and cover slip
Microscope with magnification to 400x
Sugar - 100 g
Water - 1 L
The Associated Bundle:
Standard bundle for Advanced Environmental and Earth Sciences Teacher Guide,