Virtual Lab: Effect of Temperature on Yeast Growth

Watch the balloons inflate as yeast produces CO₂ at different temperatures

Purpose

To investigate how temperature affects the rate of growth of microorganisms using baker's yeast as a safe model organism.

Learning Outcomes

  • Understand the structure and function of microorganisms
  • Investigate factors affecting microorganism growth
  • Demonstrate safe laboratory practices

Materials

  • 5 test tubes
  • Yeast suspension
  • 5% glucose solution
  • Water baths at different temperatures
  • Balloons for gas collection
  • Thermometer
  • Stopwatch
Safety Note: Always wash hands after handling cultures and use caution with hot water baths. Wear gloves and safety goggles in a real lab.
Observation Tip: Watch how the balloons inflate differently at each temperature! More CO₂ gas = bigger balloon.

Experiment Controls

Setup Experiment

Ready to set up

Start Experiment

02:00
Waiting for setup

Temperature Settings

Water bath temperatures:

Click to learn about each temperature

Reset Experiment

Laboratory Setup

Watch the balloons inflate as yeast produces CO₂ gas at different temperatures. The size of the balloon indicates yeast activity level.

10°C
10°C (Cold)
25°C
25°C (Room Temp)
37°C
37°C (Body Temp)
45°C
45°C (Warm)
60°C
60°C (Hot)

Results & Observations

Record your observations of gas production at different temperatures. The table updates automatically during the experiment.

Temperature (°C) Balloon Size Observation Activity Level
10°C Not started - -
25°C Not started - -
37°C Not started - -
45°C Not started - -
60°C Not started - -

Conclusion

Based on your observations, write a conclusion explaining how temperature affects yeast growth:

Complete this section after running the experiment and observing the results