Students set up and run the experiments they designed in the lesson Population Growth in Yeasts, using simple yeast-molasses cultures in test tubes. Population growth is indicated by the amount of respiration occurring in the cultures, which in turn is indicated by the growth of carbon dioxide bubbles trapped within the culture tubes. Using this method, students can test for a variety of environmental influences, such as temperature, food supply, and pH.

Concepts

biotechnology, cellular respiration, engineering, environmental factors, population growth, stem

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Additional Tags

integrated teaching and learning program and laboratory, teachengineering, cell respiration

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Classroom Considerations

• Knovation Readability Score: 5 (1 low difficulty, 5 high difficulty)