C1 We burn sugar (teacher instructions) © Siemens Stiftung 2015 CC BY-SA 4.0 international

C1 We burn sugar (teacher instructions)

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Experimentation instructions for Experimento | 10+:
Background information on the content and practical information on conducting the experiment "We burn sugar – Cellular respiration and respiratory chain". This experiment comprises three subexperiments.

Englisch, Spanisch (CREA), Deutsch
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PDF (367,5 kByte) DOC (579,5 kByte)
20.11.2018
This is a typical introductory experiment to the overall topic of energy supply in the human body, cellular respiration, and the respiratory chain. Three straightforward subexperiments (combustion of sugar with and without a catalyst and verification of water and carbon dioxide [CO2] in exhaled air) suggest the obvious explanation that sugar is also burned in the human body. The analogy between heterogeneous catalysis in the combustion of sugar in the experiment and biocatalytic combustion in the body leads on to the topic of energy metabolism and cellular respiration in the human body. In the age range up to 16 years, a qualitative interpretation of the experimental results may suffice. In specialized teaching in the age group 16+, teachers must go into the subject matter in considerably more detail independently of the experiment, provided adequate prior knowledge can be assumed. The materials and apparatus supplied allow eight groups of students to conduct the experiments simultaneously.

The experiment comprises three subexperiments:
• Sugar can be burned
• Verification of reaction products in the air that is breathed: Substance A
• Verification of reaction products in the air that is breathed: Substance B

Notes:
• Observe the safety information in the instructions as well as the applicable safety guidelines for your school.
• All materials mentioned in the instructions will have to be purchased directly from commercial sources.
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Experiment
Biology; Chemistry
Grade 5 to 6; Grade 7 to 9; Grade 10 to 13
Middle/high school
Carbohydrate; Enzyme; Fats; Health; Metabolism; Nutrition; Respiration; Sugar
Siemens Stiftung Media Portal
Georg Frie, Prof. Dr. Claudia Nerdel for Siemens Stiftung
© Siemens Stiftung 2015
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