I am learning… that fermentation is the process in which a substance breaks down into a simpler substance. Microorganisms like yeast and bacteria usually play a role in the fermentation process, creating chocolate, wine, bread, kimchi, yogurt and other foods.
Instructions: Collect the following ingredients:
● Yeast 1 tsp (You’ll find this in the kitchen)
● 1 Small cup of lukewarm water. 100ml
● A small amount of cereal. (Half a Weetbix)
● Mix all ingredients in a small snack sized Ziplock bag or any small plastic bag.
● Remove all the air before you seal the bag.
● Mix well and let stand.
● Make two drawings of your plastic bag:
A) at the start of the experiment and B) twenty minutes after.
1. What do you see after a while?
2. What process is taking place in the plastic bag?
3. What gas is being produced in the plastic bag?
4. Name a real-life activity that uses a process similar to your experiment.
5. What kingdom is yeast in?
6. Write the definition for Fermentation.
7. What does it mean that fermentation is anaerobic?
Use Google to answer these questions.
1. How is blue cheese fermented?
2. Make a drawing that properly shows how yogurt is made. Your drawing should clearly show each stage in the process and should act as a teaching tool other students could use to better understand the process.
● Bacteria (huakita)
● Yeast (īhi)
● Lactic Acid (waikawa waiū)
● Lactose (reihuka)
● Immune system (pūnaha awhikiri)
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