Featured in PASCO’s Biology through Inquiry Teacher Guide

Biology through Inquiry Teacher Guide

(PS-2870C)

Features 25 inquiry based labs covering the fundamental concepts of cell biology, ecology and physiology.

Metabolism of Yeast

Lab Summary

Use a carbon dioxide gas sensor to measure the production of carbon dioxide gas by yeast in aerobic and anaerobic conditions. Determine if high
temperatures effect the respiration of yeast.

Theory

Students will explore the production of carbon dioxide gas by yeast in aerobic and anaerobic conditions and determine if high temperatures effect the respiration of yeast.

Method

Students will gain experience conducting the following procedures:

  • Use a carbon dioxide gas sensor to measure the change in CO2 concentration versus time for grape juice and yeast in various temperature conditions.
  • Calculate and compare the rate of CO2 gas production for each trial.

Sensors / Equipment Used:

PASPORT Carbon Dioxide Gas Sensor

(PS-2110)

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.

Hot Plate

(SE-8830)

This compact and durable hot plate can reach up to 400 °C in minutes. The cast aluminum top plate provides an even heating surface, and it even has a built in support rod holder.

Materials Used:

Sensor extension cable (included with PS-2110)

Sampling bottle (included with PS-2110)

Beaker (2), 250-mL

Graduated cylinder, 100-mL

Graduated cylinder, 10-mL

Stirring rod

Yeast, dry (1 package)

Grape juice

Water, 1 L

Mineral oil, 5 mL

The Associated Bundle:

Biology Standard Sensor Bundle

(PS-2925A)

The Biology Standard Sensor Bundle includes a photosynthesis tank and the sensors required to perform 19 of the 24 Lab Activities in the Biology through Inquiry manual.

Interface Required

This experiment may require software and an interface for data collection.