A series of biology experiments, called BioNutrients, is testing ways to use microorganisms to produce nutrients - off Earth and on demand - that will be critical for human health in space.
For the BioNutrients-1 experiment, the specially engineered yeast and its powdered food source are held in the container at the left. Its lid holds a membrane that allows carbon dioxide from the yeast to escape. The clear tube at right protects another filter system leading into the compartment with the microorganisms. To activate the yeast and begin the experiment, astronauts on board the space station will inject water through the filter, making it sterile. The water will dissolve the nutrient powder and the yeast will grow and multiply in this liquid environment, producing an important nutrient for human health.
NASA/Dominic Hart
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