Yeast loves sugar. But does it have a favorite type? Which type of sugar really gets yeast going? The following experiment provides the answer:
Good to know:
Wissensbox Enzyme
Knowledge Box: Sugar Metabolism in the Yeast Cell
You can record your results in the observation log.
Observation Log: Sugar Types
What did your investigations reveal? Which sugar did the yeast like the most? How can the yeast’s preference be explained? Write us your results in the comments.
The Yeast! Materials created in cooperation with the upper secondary profile Ecosystem Research of the Goethe School Harburg under the direction of Olaf Zeiske.
How does yeast react to different temperatures? When does it really get going and when does it become sluggish? Find out in our experiment.
Here’s how you do it:
Good to know:
Knowledge box Enzymes
Knowledge box Temperature optimum
Knowledge box RGT rule
You can record your results in the observation log.
Observation log temperature experiment
What did your investigations reveal? At what temperature does yeast feel most comfortable and is particularly active? Can the RGT rule be applied to the activity of yeast? Write us your results in the comments.
The Yeast! Materials were created in cooperation with the upper secondary profile Ecosystem Research of the Goethe School Harburg under the direction of Olaf Zeiske.
At what temperature does yeast feel most comfortable? In our Yeast! lab, we will examine yeast and its peculiarities. Experiment for a group of 5 to 6 students (recommended for middle school).
Felix has a problem! He wants to bathe his pet, the yeast Yeastie. But his instructions got wet and the water made parts unreadable. Now he doesn’t know at what temperature Yeastie feels most comfortable. He can still see from the instructions that it is a two-digit number and that the last digit is a 5. He also thinks the bathing temperature was between 20°C and 50°C. Can you help Felix?
Embark on a search for the temperature optimum! You can read what this means in the knowledge box below.
Knowledge Box: Temperature Optimum
You can find out at what water temperature the yeast Yeastie prefers to splash around with an experiment. The experimental procedure is explained in the video below:
You can record your results on the following worksheet.
Observation Log
What did your investigations reveal? Where is the temperature optimum for yeast? Write us your results in the comments.
The Yeast! materials were created in cooperation with the upper secondary profile Ecosystem Research of the Goethe School Harburg under the direction of Olaf Zeiske.
Yeast feeds on sugar. But when does it have enough of it? Feed the yeast with different amounts of sugar and see what happens.
Here’s how you proceed:
Good to know:
Knowledge Box Enzymes
Knowledge Box Michaelis-Menten Kinetics
You can record your results in the observation log.
Observation Log Sugar Amount
What did your investigations reveal? How does yeast react to different amounts of sugar? Can your results be explained by Michaelis-Menten kinetics? Write us your results in the comments.
The Yeast! Materials created in cooperation with the upper secondary profile Ecosystem Research of Goethe Schule Harburg under the direction of Olaf Zeiske.
In this section, you will find yeast experiments that student groups can also conduct in the classroom independently of the Kniffelix missions. For each experiment, there is a website for students that explains the experiment in a target-group-appropriate manner, as well as accompanying material for educators. The tasks for the experiments are based on the school curricula.
Feel free to share your experiences with the experiments in the comments.
These Yeast! materials were created in cooperation with the upper secondary ecology research profile of Goethe Schule Harburg under the direction of Olaf Zeiske. Here’s a look behind the scenes.
The Yeast! Materials created in cooperation with the upper secondary profile Ecosystem Research of the Goethe School Harburg under the direction of Olaf Zeiske.
At what temperature does yeast feel most comfortable? In our Yeast! lab, we will examine yeast and its peculiarities. Experiment for a group of 5 to 6 students (recommended for middle school).
Subject: Math, Biology
Subject: Biology
Subject: Biology
Subject: Biology